The Experts below are selected from a list of 1893 Experts worldwide ranked by ideXlab platform
Acharya Shreyasi - One of the best experts on this subject based on the ideXlab platform.
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb–Pb collisions at √sNN=5.02 TeV
'Elsevier BV', 2020Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aglieri Rinella Gianluca, Agnello Michelangelo, Aggarwal, Madan M., Agrawal Nikita, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at √sNN = 5.02 TeV in the pT intervals 0.5–26 GeV/c (0–10% and 30–50%) and 0.5–10 GeV/c (60–80%). The production cross section in proton–proton (pp) collisions at √s = 5.02 TeV was measured as well in 0.5 < pT < 10 GeV/c and it lies close to the upper band of perturbative QCD calculation uncertainties up to pT = 5 GeV/c and close to the mean value for larger pT. The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon–nucleon collisions is evaluated by measuring the nuclear modification factor RAA. The measurement of the RAA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The RAA shows a suppression with respect to unity at intermediate pT, which increases while moving towards more central collisions. Moreover, the measured RAA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pT in heavy-ion collisions at LHC.publishedVersio
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV
HAL CCSD, 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant cross section as a function of transverse momentum ($p_\rm{T}$) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in proton-proton (pp) collisions at $\sqrt{s}$ = 5.02 TeV in the $p_\rm{T}$ interval 0.5-10 GeV/$c$, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV in the $p_{\rm{T}}$ intervals 0.5-26 GeV/$c$ (0-10% and 30-50%) and 0.5-10 GeV/$c$ (60-80%). The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon-nucleon collisions is evaluated by measuring the nuclear modification factor $R_{\rm{AA}}$. The measurement of the $R_{\rm{AA}}$ in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured $R_{\rm{AA}}$ is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low $p_\rm{T}$ in heavy-ion collisions at LHC
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Measurements of low-pT electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at √sN-N−=2.76TeV
'Springer Science and Business Media LLC', 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aglieri Rinella Gianluca, Agnello Michelangelo, Ahammed Zubayer, Acosta, Fernando T., Aggarwal, Madan M., Agrawal Nikita, Sang Un AhnAbstract:Transverse-momentum (pT) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at sNN−−−√=2.76 TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the pT interval 0.5–3 GeV/c via the nuclear modification factor, RAA. This paper extends the pT reach of the RAA measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the pT-differential measurements of yields at low pT are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution.publishedVersio
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV
'Elsevier BV', 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant cross section as a function of transverse momentum ($p_\rm{T}$) of electrons from semileptonic heavy-flavour hadron decays was measured at mid-rapidity in proton-proton (pp) collisions at $\sqrt{s}=5.02$ TeV in the $p_\rm{T}$ interval 0.5-10 GeV/$c$, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}}=5.02\text{ TeV}$ in the $p_\rm{T}$ intervals 0.5-26 GeV/$c$ (0-10% and 30-50%) and 0.5-10 GeV/$c$ (60-80%). The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon--nucleon collisions is evaluated by measuring the nuclear modification factor $R_{\mathrm{AA}}$. The measurement of the $R_{\mathrm{AA}}$ in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured $R_{\mathrm{AA}}$ is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low $p_\rm{T}$ in heavy-ion collisions at LHC.The differential invariant yield as a function of transverse momentum ( pT ) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at sNN=5.02 TeV in the pT intervals 0.5–26 GeV/ c (0–10% and 30–50%) and 0.5–10 GeV/ c (60–80%). The production cross section in proton–proton (pp) collisions at s=5.02 TeV was measured as well in 0.5
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Measurements of low-p$_{T}$ electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV
'Springer Science and Business Media LLC', 2018Co-Authors: Acharya Shreyasi, Torales Acosta - Fernando, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Ahammed Zubayer, Sang Un AhnAbstract:International audienceTransverse-momentum (p$_{T}$) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the p$_{T}$ interval 0.5–3 GeV/c via the nuclear modification factor, R$_{AA}$. This paper extends the p$_{T}$ reach of the R$_{AA}$ measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the p$_{T}$-differential measurements of yields at low p$_{T}$ are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution
Ahammed Zubayer - One of the best experts on this subject based on the ideXlab platform.
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb–Pb collisions at √sNN=5.02 TeV
'Elsevier BV', 2020Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aglieri Rinella Gianluca, Agnello Michelangelo, Aggarwal, Madan M., Agrawal Nikita, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at √sNN = 5.02 TeV in the pT intervals 0.5–26 GeV/c (0–10% and 30–50%) and 0.5–10 GeV/c (60–80%). The production cross section in proton–proton (pp) collisions at √s = 5.02 TeV was measured as well in 0.5 < pT < 10 GeV/c and it lies close to the upper band of perturbative QCD calculation uncertainties up to pT = 5 GeV/c and close to the mean value for larger pT. The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon–nucleon collisions is evaluated by measuring the nuclear modification factor RAA. The measurement of the RAA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The RAA shows a suppression with respect to unity at intermediate pT, which increases while moving towards more central collisions. Moreover, the measured RAA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pT in heavy-ion collisions at LHC.publishedVersio
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV
HAL CCSD, 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant cross section as a function of transverse momentum ($p_\rm{T}$) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in proton-proton (pp) collisions at $\sqrt{s}$ = 5.02 TeV in the $p_\rm{T}$ interval 0.5-10 GeV/$c$, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV in the $p_{\rm{T}}$ intervals 0.5-26 GeV/$c$ (0-10% and 30-50%) and 0.5-10 GeV/$c$ (60-80%). The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon-nucleon collisions is evaluated by measuring the nuclear modification factor $R_{\rm{AA}}$. The measurement of the $R_{\rm{AA}}$ in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured $R_{\rm{AA}}$ is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low $p_\rm{T}$ in heavy-ion collisions at LHC
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Measurements of low-pT electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at √sN-N−=2.76TeV
'Springer Science and Business Media LLC', 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aglieri Rinella Gianluca, Agnello Michelangelo, Ahammed Zubayer, Acosta, Fernando T., Aggarwal, Madan M., Agrawal Nikita, Sang Un AhnAbstract:Transverse-momentum (pT) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at sNN−−−√=2.76 TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the pT interval 0.5–3 GeV/c via the nuclear modification factor, RAA. This paper extends the pT reach of the RAA measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the pT-differential measurements of yields at low pT are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution.publishedVersio
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV
'Elsevier BV', 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant cross section as a function of transverse momentum ($p_\rm{T}$) of electrons from semileptonic heavy-flavour hadron decays was measured at mid-rapidity in proton-proton (pp) collisions at $\sqrt{s}=5.02$ TeV in the $p_\rm{T}$ interval 0.5-10 GeV/$c$, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}}=5.02\text{ TeV}$ in the $p_\rm{T}$ intervals 0.5-26 GeV/$c$ (0-10% and 30-50%) and 0.5-10 GeV/$c$ (60-80%). The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon--nucleon collisions is evaluated by measuring the nuclear modification factor $R_{\mathrm{AA}}$. The measurement of the $R_{\mathrm{AA}}$ in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured $R_{\mathrm{AA}}$ is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low $p_\rm{T}$ in heavy-ion collisions at LHC.The differential invariant yield as a function of transverse momentum ( pT ) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at sNN=5.02 TeV in the pT intervals 0.5–26 GeV/ c (0–10% and 30–50%) and 0.5–10 GeV/ c (60–80%). The production cross section in proton–proton (pp) collisions at s=5.02 TeV was measured as well in 0.5
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Measurements of low-p$_{T}$ electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV
'Springer Science and Business Media LLC', 2018Co-Authors: Acharya Shreyasi, Torales Acosta - Fernando, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Ahammed Zubayer, Sang Un AhnAbstract:International audienceTransverse-momentum (p$_{T}$) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the p$_{T}$ interval 0.5–3 GeV/c via the nuclear modification factor, R$_{AA}$. This paper extends the p$_{T}$ reach of the R$_{AA}$ measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the p$_{T}$-differential measurements of yields at low p$_{T}$ are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution
Adolfsson Jonatan - One of the best experts on this subject based on the ideXlab platform.
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb–Pb collisions at √sNN=5.02 TeV
'Elsevier BV', 2020Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aglieri Rinella Gianluca, Agnello Michelangelo, Aggarwal, Madan M., Agrawal Nikita, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at √sNN = 5.02 TeV in the pT intervals 0.5–26 GeV/c (0–10% and 30–50%) and 0.5–10 GeV/c (60–80%). The production cross section in proton–proton (pp) collisions at √s = 5.02 TeV was measured as well in 0.5 < pT < 10 GeV/c and it lies close to the upper band of perturbative QCD calculation uncertainties up to pT = 5 GeV/c and close to the mean value for larger pT. The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon–nucleon collisions is evaluated by measuring the nuclear modification factor RAA. The measurement of the RAA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The RAA shows a suppression with respect to unity at intermediate pT, which increases while moving towards more central collisions. Moreover, the measured RAA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pT in heavy-ion collisions at LHC.publishedVersio
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV
HAL CCSD, 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant cross section as a function of transverse momentum ($p_\rm{T}$) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in proton-proton (pp) collisions at $\sqrt{s}$ = 5.02 TeV in the $p_\rm{T}$ interval 0.5-10 GeV/$c$, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV in the $p_{\rm{T}}$ intervals 0.5-26 GeV/$c$ (0-10% and 30-50%) and 0.5-10 GeV/$c$ (60-80%). The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon-nucleon collisions is evaluated by measuring the nuclear modification factor $R_{\rm{AA}}$. The measurement of the $R_{\rm{AA}}$ in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured $R_{\rm{AA}}$ is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low $p_\rm{T}$ in heavy-ion collisions at LHC
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Measurements of low-pT electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at √sN-N−=2.76TeV
'Springer Science and Business Media LLC', 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aglieri Rinella Gianluca, Agnello Michelangelo, Ahammed Zubayer, Acosta, Fernando T., Aggarwal, Madan M., Agrawal Nikita, Sang Un AhnAbstract:Transverse-momentum (pT) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at sNN−−−√=2.76 TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the pT interval 0.5–3 GeV/c via the nuclear modification factor, RAA. This paper extends the pT reach of the RAA measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the pT-differential measurements of yields at low pT are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution.publishedVersio
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV
'Elsevier BV', 2019Co-Authors: Acharya Shreyasi, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Adhya, Souvik Priyam, Adler Alexander, Ahammed ZubayerAbstract:The differential invariant cross section as a function of transverse momentum ($p_\rm{T}$) of electrons from semileptonic heavy-flavour hadron decays was measured at mid-rapidity in proton-proton (pp) collisions at $\sqrt{s}=5.02$ TeV in the $p_\rm{T}$ interval 0.5-10 GeV/$c$, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at $\sqrt{s_{\rm{NN}}}=5.02\text{ TeV}$ in the $p_\rm{T}$ intervals 0.5-26 GeV/$c$ (0-10% and 30-50%) and 0.5-10 GeV/$c$ (60-80%). The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon--nucleon collisions is evaluated by measuring the nuclear modification factor $R_{\mathrm{AA}}$. The measurement of the $R_{\mathrm{AA}}$ in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured $R_{\mathrm{AA}}$ is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low $p_\rm{T}$ in heavy-ion collisions at LHC.The differential invariant yield as a function of transverse momentum ( pT ) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at sNN=5.02 TeV in the pT intervals 0.5–26 GeV/ c (0–10% and 30–50%) and 0.5–10 GeV/ c (60–80%). The production cross section in proton–proton (pp) collisions at s=5.02 TeV was measured as well in 0.5
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Measurements of low-p$_{T}$ electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV
'Springer Science and Business Media LLC', 2018Co-Authors: Acharya Shreyasi, Torales Acosta - Fernando, Adamova Dagmar, Adolfsson Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella Gianluca, Agnello Michelangelo, Agrawal Neelima, Ahammed Zubayer, Sang Un AhnAbstract:International audienceTransverse-momentum (p$_{T}$) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at $ \sqrt{s_{\mathrm{NN}}}=2.76 $ TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the p$_{T}$ interval 0.5–3 GeV/c via the nuclear modification factor, R$_{AA}$. This paper extends the p$_{T}$ reach of the R$_{AA}$ measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the p$_{T}$-differential measurements of yields at low p$_{T}$ are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution
Shihong Liao - One of the best experts on this subject based on the ideXlab platform.
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searching for primordial black holes with stochastic gravitational wave background in the space based detector frequency band
Physical Review D, 2020Co-Authors: Y F Wang, Qingguo Huang, Shihong LiaoAbstract:Assuming that primordial black holes compose a fraction of dark matter, some of them may accumulate at the center of galaxy and perform a prograde or retrograde orbit against the gravity pointing towards the center exerted by the central massive black hole. If the mass of primordial black holes is of the order of stellar mass or smaller, such extreme mass ratio inspirals can emit gravitational waves and form a background due to Incoherent Superposition of all the contributions of the Universe. We investigate the stochastic gravitational-wave background energy density spectra from the directional source, the primordial black holes surrounding Sagittarius A$^\ast$ of the Milky Way, and the isotropic extragalactic total contribution, respectively. As will be shown, the resultant stochastic gravitational-wave background energy density shows different spectrum features such as the peak positions in the frequency domain for the above two kinds of sources. Detection of stochastic gravitational-wave background with such a feature may provide evidence for the existence of primordial black holes. Conversely, a null searching result can put constraints on the abundance of primordial black holes in dark matter.
Acharya S. - One of the best experts on this subject based on the ideXlab platform.
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb–Pb collisions at √sNN = 5.02 TeV
2020Co-Authors: Acharya S., Aggarwal, Madan M., Adamova D., Adolfsson J., Aglieri Rinella G., Agnello M., Agrawal N., Adler A., Adhya S. P., Ahammed Z.Abstract:The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at √sNN = 5.02 TeV in the pT intervals 0.5–26 GeV/c (0–10% and 30–50%) and 0.5–10 GeV/c (60–80%). The production cross section in proton–proton (pp) collisions at √s = 5.02 TeV was measured as well in 0.5 < pT < 10 GeV/c and it lies close to the upper band of perturbative QCD calculation uncertainties up to pT=5 GeV/c and close to the mean value for larger pT. The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon–nucleon collisions is evaluated by measuring the nuclear modification factor RAA. The measurement of the RAA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The RAA shows a suppression with respect to unity at intermediate pT, which increases while moving towards more central collisions. Moreover, the measured RAA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pT in heavy-ion collisions at LHC
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb\u2013Pb collisions at 1asNN=5.02 TeV
'Elsevier BV', 2020Co-Authors: Acharya S., Adamova D., Adolfsson J., Aglieri Rinella G., Agnello M., Agrawal N., Aggarwal M.m., Adhya S.p., Adler A., Ahammed Z.Abstract:The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0\u201310%), semi-central (30\u201350%) and peripheral (60\u201380%) lead\u2013lead (Pb\u2013Pb) collisions at 1asNN=5.02 TeV in the pTintervals 0.5\u201326 GeV/c(0\u201310% and 30\u201350%) and 0.5\u201310 GeV/c(60\u201380%). The production cross section in proton\u2013proton (pp) collisions at 1as=5.02 TeV was measured as well in 0.5 <10 GeV/cand it lies close to the upper band of perturbative QCD calculation uncertainties up to pT=5 GeV/cand close to the mean value for largerpT. The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon\u2013nucleon collisions is evaluated by measuring the nuclear modification factorRAA. The measurement of the RAAin different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The RAAshows a suppression with respect to unity at intermediate pT, which increases while moving towards more central collisions. Moreover, the measured RAAis sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pTin heavy-ion collisions at LHC
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Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb–Pb collisions at sNN=5.02 TeV
'Elsevier BV', 2020Co-Authors: Acharya S., Aggarwal, Madan M., Adamova D., Adolfsson J., Aglieri Rinella G., Agnello M., Agrawal N., Adler A., Adhya S. P., Ahammed Z.Abstract:The differential invariant yield as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0–10%), semi-central (30–50%) and peripheral (60–80%) lead–lead (Pb–Pb) collisions at sNN=5.02 TeV in the pT intervals 0.5–26 GeV/c (0–10% and 30–50%) and 0.5–10 GeV/c (60–80%). The production cross section in proton–proton (pp) collisions at s=5.02 TeV was measured as well in 0.5<10 GeV/c and it lies close to the upper band of perturbative QCD calculation uncertainties up to pT=5 GeV/c and close to the mean value for larger pT. The modification of the electron yield with respect to what is expected for an Incoherent Superposition of nucleon–nucleon collisions is evaluated by measuring the nuclear modification factor RAA. The measurement of the RAA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The RAA shows a suppression with respect to unity at intermediate pT, which increases while moving towards more central collisions. Moreover, the measured RAA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pT in heavy-ion collisions at LHC
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Measurements of low-pT electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at root s(NN)=2.76 TeV
Itália, 2020Co-Authors: Acharya S., Acosta, Fernando T., Aggarwal, Madan M., Adamova D., Adolfsson J., Agnello M., Agrawal N., Ahammed Z., Rinella G. Aglieri, Ahn S. U.Abstract:CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFINEP - FINANCIADORA DE ESTUDOS E PROJETOSFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOTransverse-momentum (pT) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0–10%) and in semi-central (20–40%) Pb–Pb collisions at sNN=2.76 TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb–Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y| < 0.8) in the pT interval 0.5–3 GeV/c via the nuclear modification factor, RAA. This paper extends the pT reach of the RAA measurement towards significantly lower values with respect to a previous publication. In Pb–Pb collisions the pT-differential measurements of yields at low pT are essential to investigate the scaling of heavy-flavour production with the number of binary nucleon-nucleon collisions. Heavy-quark hadronization, a collective expansion and even initial-state effects, such as the nuclear modification of the Parton Distribution Function, are also expected to have a significant effect on the measured distribution.10129CNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFINEP - FINANCIADORA DE ESTUDOS E PROJETOSFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOCNPQ - CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFINEP - FINANCIADORA DE ESTUDOS E PROJETOSFAPESP - FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULOAgências de fomento estrangeiras apoiaram essa pesquisa, mais informações acesse artig
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Measurements of low-p(T) electrons from semileptonic heavy-flavour hadron decays at mid-rapidity in pp and Pb-Pb collisions at root s(NN)=2.76 TeV
'Springer Science and Business Media LLC', 2018Co-Authors: The Alice Collaboration, Acharya S., Brücken E. J., Chang B., Hilden T. E., Kim D. J., Mieskolainen M. M., Orava R., Parkkila J. E.Abstract:Transverse-momentum (p(T)) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0-10%) and in semi-central (20-40%) Pb-Pb collisions at TeV. The corresponding production cross section in pp collisions has been measured at the same energy with substantially reduced systematic uncertainties with respect to previously published results. The modification of the yield in Pb-Pb collisions with respect to the expectation from an Incoherent Superposition of nucleon-nucleon collisions is quantified at mid-rapidity (|y|
