The Experts below are selected from a list of 18366 Experts worldwide ranked by ideXlab platform
B. G. Zakharov - One of the best experts on this subject based on the ideXlab platform.
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Radiative p_ perp broadening of fast partons in an expanding quark gluon plasma
arXiv: High Energy Physics - Phenomenology, 2020Co-Authors: B. G. ZakharovAbstract:We study contribution of Radiative processes to $p_{\perp}$-broadening of fast partons in an expanding quark-gluon plasma. It is shown that the Radiative Correction to $\langle p_{\perp}^2\rangle$ for the QGP produced in $AA$-collisions at RHIC and LHC may be negative, and comparable in absolute value with the non-Radiative contribution. We have found that the QGP expansion enhances the Radiative suppression of $p_\perp$-broadening as compared to the static medium.
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Radiative contribution to p_ perp broadening of fast partons in a quark gluon plasma
arXiv: High Energy Physics - Phenomenology, 2019Co-Authors: B. G. ZakharovAbstract:The contribution of Radiative processes to $p_\perp$-broadening of fast partons in a quark-gluon plasma is investigated. Calculations are performed beyond the soft gluon approximation. It is shown that the Radiative Correction to $\langle p_{\perp}^2\rangle$ for conditions of heavy ion collisions at RHIC and LHC is negative and can be comparable in absolute value with the nonRadiative contribution. This prediction differs radically from the essentially positive contribution of Radiative processes to $p_{\perp}$-broadening, which was predicted earlier in the literature.
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Radiative Contribution to p_⊥ Broadening of Fast Partons in a Quark–Gluon Plasma
Journal of Experimental and Theoretical Physics, 2019Co-Authors: B. G. ZakharovAbstract:The contribution of Radiative processes to the p _⊥ broadening of fast partons in a quark–gluon plasma is investigated. Calculations are performed beyond the soft gluon approximation. It is shown that the Radiative Correction to 〈 $$p_{ \bot }^{2}$$ 〉 in conditions of collision of heavy ions at RHIC and LHC is negative and can be comparable in absolute value with the nonRadiative contribution. This prediction differs radically from the essentially positive contribution of Radiative processes to the p _⊥ broadening, which was predicted earlier in the literature.
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Radiative quark p_ perp broadening in a quark gluon plasma at rhic and lhc energies
arXiv: High Energy Physics - Phenomenology, 2019Co-Authors: B. G. ZakharovAbstract:We study the Radiative Correction to $p_\perp$-broadening of a fast quark in a quark-gluon plasma beyond the soft gluon approximation. We find that the Radiative contribution to quark $\langle p_\perp^2\rangle$ for RHIC and LHC conditions is negative.
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Radiative quark $p_\perp$-broadening in a quark-gluon plasma at RHIC and LHC energies
arXiv: High Energy Physics - Phenomenology, 2019Co-Authors: B. G. ZakharovAbstract:We study the Radiative Correction to $p_\perp$-broadening of a fast quark in a quark-gluon plasma beyond the soft gluon approximation. We find that the Radiative contribution to quark $\langle p_\perp^2\rangle$ for RHIC and LHC conditions is negative.
H Grotch - One of the best experts on this subject based on the ideXlab platform.
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Radiative Correction to the nuclear size effect and hydrogen deuterium isotopic shift
Physical Review A, 1997Co-Authors: Michael I Eides, H GrotchAbstract:The Radiative Correction to the nuclear charge radius contribution to the Lamb shift of order $\alpha(Z\alpha)^5m_r^3 $ is calculated. In view of the recent high precision experimental data, this theoretical Correction produces a significant contribution to the hydrogen-deuterium isotopic shift.
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new Correction to lamb shift induced by one loop polarization insertions in the Radiative electron factor
Physics Letters B, 1993Co-Authors: Michael I Eides, H GrotchAbstract:Abstract A Radiative Correction of order α 2 ( Zα ) 5 m to the Lamb shift induced by polarization insertions in the Radiative electron factor is obtained. This Correction arises from a gauge invariant set of diagrams which contain all one-loop polarization insertions in the Radiative photon attached by both ends to the electron line with two external Coulomb lines. A new contribution to the Lamb shift in an arbitrary hydrogen-like ion is equal to −0.073( α 2 ( Zα ) 5 /( πn 3 )) m for any S-level with the principal quantum number n . For hydrogen itself we obtain a Correction −0.39 kHz for the 2S state.
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an α2 zα 5m Correction to the lamb shift from the Radiative electron factor and coulomb line polarization
Physics Letters B, 1993Co-Authors: Michael I Eides, H GrotchAbstract:Abstract A Radiative Correction of order α2(Zα)5m to the Lamb shift connected with a polarization insertion in one of the two external Coulomb lines is obtained. This Correction arises from a gauge invariant set of diagrams which contain, besides the polarization insertion in the Coulomb leg, all one-loop Radiative photon insertions in the electron line with two external Coulomb lines. A new contribution to the Lamb shift in an arbitrary hydrogen-like ion is equal to 0.611 [ α 2 (Zα) 5 πn 3 ]m for any S-level with the principal quantum number n. For hydrogen itself we obtain a Correction 3.31 kHz for the 2S state and 26.5 kHz for the 1S state. The contribution for the 2S state is larger than the accuracy of contemporary experiments while the contribution for the 1S state is comparable with the experimental error.
Michael I Eides - One of the best experts on this subject based on the ideXlab platform.
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Radiative Correction to the nuclear size effect and hydrogen deuterium isotopic shift
Physical Review A, 1997Co-Authors: Michael I Eides, H GrotchAbstract:The Radiative Correction to the nuclear charge radius contribution to the Lamb shift of order $\alpha(Z\alpha)^5m_r^3 $ is calculated. In view of the recent high precision experimental data, this theoretical Correction produces a significant contribution to the hydrogen-deuterium isotopic shift.
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new Correction to lamb shift induced by one loop polarization insertions in the Radiative electron factor
Physics Letters B, 1993Co-Authors: Michael I Eides, H GrotchAbstract:Abstract A Radiative Correction of order α 2 ( Zα ) 5 m to the Lamb shift induced by polarization insertions in the Radiative electron factor is obtained. This Correction arises from a gauge invariant set of diagrams which contain all one-loop polarization insertions in the Radiative photon attached by both ends to the electron line with two external Coulomb lines. A new contribution to the Lamb shift in an arbitrary hydrogen-like ion is equal to −0.073( α 2 ( Zα ) 5 /( πn 3 )) m for any S-level with the principal quantum number n . For hydrogen itself we obtain a Correction −0.39 kHz for the 2S state.
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an α2 zα 5m Correction to the lamb shift from the Radiative electron factor and coulomb line polarization
Physics Letters B, 1993Co-Authors: Michael I Eides, H GrotchAbstract:Abstract A Radiative Correction of order α2(Zα)5m to the Lamb shift connected with a polarization insertion in one of the two external Coulomb lines is obtained. This Correction arises from a gauge invariant set of diagrams which contain, besides the polarization insertion in the Coulomb leg, all one-loop Radiative photon insertions in the electron line with two external Coulomb lines. A new contribution to the Lamb shift in an arbitrary hydrogen-like ion is equal to 0.611 [ α 2 (Zα) 5 πn 3 ]m for any S-level with the principal quantum number n. For hydrogen itself we obtain a Correction 3.31 kHz for the 2S state and 26.5 kHz for the 1S state. The contribution for the 2S state is larger than the accuracy of contemporary experiments while the contribution for the 1S state is comparable with the experimental error.
F Gluck - One of the best experts on this subject based on the ideXlab platform.
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order α Radiative Correction to 6he and 32ar β decay recoil spectra
Nuclear Physics, 1998Co-Authors: F GluckAbstract:Abstract Order-α model independent Radiative Correction results to the 6 He → 6 Li and 32 Ar → 32 Cl β decay recoil spectra are presented. The effects of these Corrections on the electron-neutrino correlation parameter ( a eν ) and the induced tensor form factor are discussed (taking into account the most important experimental details of these measurements). In the case of 6 He beta decay, the shift of the a eν value due to our Radiative Correction calculation is larger than the total experimental error of the last, precise measurement. The order- Zα 2 Radiative Correction of the recoil spectrum is also estimated. Recoil-order formulae are given for the beta energy - recoil energy Dalitz distribution and the recoil spectrum.
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order α Radiative Correction calculations for unoriented allowed nuclear neutron and pion β decays
Computer Physics Communications, 1997Co-Authors: F GluckAbstract:Abstract An efficient Monte Carlo method for orderα photon bremsstrahlung calculations in allowed nuclear, neutron and pion beta decays is presented. This method is useful for Radiative Correction calculations and for weighted or unweighted event generations in experimental off-line data analyses. The most important intermediate steps of the calculations are also described. Several numerical results of the Monte Carlo program are compared with published analytical and numerical quadrature calculation results.
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monte carlo type Radiative Correction calculations for λ pev decay
Physics Letters B, 1994Co-Authors: F Gluck, I JooAbstract:Abstract Order- α Radiative Corrections to one-dimensional distributions in Λ → pe v decay are calculated. It is pointed out that the g 1 f 1 determinations of the high statistics Λ → pe v experiments of the eighties contain systematic errors because of using wrong Radiative Corrections. These theoretical errors are about twice as large as the measurement error of the latest experiment, and could essentially effect the tests of the Cabibbo model or the quark model calculations.
O Yakovlev - One of the best experts on this subject based on the ideXlab platform.
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qcd Radiative Correction to zero recoil sum rules for heavy flavor transitions in the small velocity limit
arXiv: High Energy Physics - Phenomenology, 1995Co-Authors: J G Korner, Kirill Melnikov, O YakovlevAbstract:We consider the small velocity sum rules for heavy flavour semileptonic transitions that are used to estimate the zero recoil values of semileptonic heavy flavour form factors. We analyze the complete O($\alpha _S$) Radiative Correction to these sum rules. The Corrections are universal and influence all "model-independent" bounds previously derived for semileptonic form factors at zero recoil.
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higgs two photon interaction in the standard model the qcd Radiative Correction
Physics Letters B, 1993Co-Authors: Kirill Melnikov, O YakovlevAbstract:Abstract The Higgs-two-photon interaction in the Standard Model is investigated. We calculate the two-loop QCD Radiative Correction to this vertex. Also, the QCD Radiative Correction to the Hγγ decay rate and to the cross section of single Higgs production on photon colliders are discussed. Below threshold we found a negligible Correction to the Hγγ vertex, thus supporting results obtained earlier [A. Djouadi et al., Phys. Lett. B 257 (1991) 187]. Above threshold the Radiative Corrections appear to be large for both the real and imaginary part of the Hγγ formfactor. This leads to a Radiative Correction for Γ(H → γγ) and for the cross section ofsingle Higgs production on the photon collider to be on the order of (20−100)% at mt = 150 GeV. Possible applications of our results to the Higgs search at Next Linear Colliders (NLC) are briefly discussed.