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G.d. Alexeev - One of the best experts on this subject based on the ideXlab platform.

  • A search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology at sqrt(s) = 1.96 TeV
    Physical Review Letters, 2008
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, M. Ahsan, G.d. Alexeev, G. Alkhazov
    Abstract:

    We report a search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology, using an integrated luminosity of 0.93 inverse femtobarn recorded by the D0 detector at the Fermilab Tevatron Collider. The analysis includes Signal contributions from pp->ZH->nu nu b b, as well as from WH production in which the charged lepton from the W boson decay is undetected. Neural networks are used to Separate Signal from background. In the absence of a Signal, we set limits on the cross section of pp->VH times the branching ratio of H->bb at the 95% C.L. of 2.6 - 2.3 pb, for Higgs boson masses in the range 105 - 135 GeV, where V=W,Z. The corresponding expected limits range from 2.8 pb - 2.0 pb.

  • Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$
    Physical Review Letters, 2007
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, S.h. Ahn, M. Ahsan, G.d. Alexeev
    Abstract:

    The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to Separate Signal from background and measure sigma(ppbar->tb+X,tqb+X) = 4.9 +- 1.4 pb. The probability to measure a cross section at this value or higher in the absence of Signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the CKM matrix element that describes the Wtb coupling and find 0.68 < |Vtb|

V.m. Abazov - One of the best experts on this subject based on the ideXlab platform.

  • A search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology at sqrt(s) = 1.96 TeV
    Physical Review Letters, 2008
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, M. Ahsan, G.d. Alexeev, G. Alkhazov
    Abstract:

    We report a search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology, using an integrated luminosity of 0.93 inverse femtobarn recorded by the D0 detector at the Fermilab Tevatron Collider. The analysis includes Signal contributions from pp->ZH->nu nu b b, as well as from WH production in which the charged lepton from the W boson decay is undetected. Neural networks are used to Separate Signal from background. In the absence of a Signal, we set limits on the cross section of pp->VH times the branching ratio of H->bb at the 95% C.L. of 2.6 - 2.3 pb, for Higgs boson masses in the range 105 - 135 GeV, where V=W,Z. The corresponding expected limits range from 2.8 pb - 2.0 pb.

  • Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$
    Physical Review Letters, 2007
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, S.h. Ahn, M. Ahsan, G.d. Alexeev
    Abstract:

    The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to Separate Signal from background and measure sigma(ppbar->tb+X,tqb+X) = 4.9 +- 1.4 pb. The probability to measure a cross section at this value or higher in the absence of Signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the CKM matrix element that describes the Wtb coupling and find 0.68 < |Vtb|

Masaki Saito - One of the best experts on this subject based on the ideXlab platform.

  • Regulation of EGF‐induced tenascin‐C by steroids in tenascin‐C‐non‐producing human carcinoma cells
    International Journal of Cancer, 1995
    Co-Authors: Takao Sakai, Hisaaki Kawakatsu, Yusuke Furukawa, Masaki Saito
    Abstract:

    Tenascin-C, a 6-armed extracellular matrix glycoprotein, is expressed in a temporally and spatially restricted pattern during tumorigenesis in association with stromal-epithelial interactions. We have previously shown that de novo synthesis of tenascin-C is induced by the diffusible factor EGF in tenascin-C-non-producing human epidermoid carcinoma cells in stromal-epithelial interactions. We now demonstrate that the addition of human tenascin-C or tenascin-C peptides to the culture medium of these cells had little effect on the induction of tenascin-C. The physiological regulators of tenascin-C induction through the EGF receptor, however, have not yet been characterized. We show that steroid hormones down-regulate EGF-induced tenascin-C glycoprotein and its mRNA in these tenascin-C-non-producing carcinoma cells. Of the steroids examined, hydrocortisone most effectively inhibited the secretion of tenascin-C. These steroids did not affect EGF-induced autophosphorylation or de novo synthesis of EGF receptors, nor did they compete for the binding of EGF to its receptor. Our results indicate that the induction of tenascin-C by EGF and its down-regulation by steroids might proceed in these carcinoma cells through Separate Signal transduction pathways. © 1995 Wiley-Liss, Inc.

  • Regulation of EGF‐induced tenascin‐C by steroids in tenascin‐C‐non‐producing human carcinoma cells
    International journal of cancer, 1995
    Co-Authors: Takao Sakai, Hisaaki Kawakatsu, Yusuke Furukawa, Masaki Saito
    Abstract:

    Tenascin-C, a 6-armed extracellular matrix glycoprotein, is expressed in a temporally and spatially restricted pattern during tumorigenesis in association with stromal-epithelial interactions. We have previously shown that de novo synthesis of tenascin-C is induced by the diffusible factor EGF in tenascin-C-non-producing human epidermoid carcinoma cells in stromal-epithelial interactions. We now demonstrate that the addition of human tenascin-C or tenascin-C peptides to the culture medium of these cells had little effect on the induction of tenascin-C. The physiological regulators of tenascin-C induction through the EGF receptor, however, have not yet been characterized. We show that steroid hormones down-regulate EGF-induced tenascin-C glycoprotein and its mRNA in these tenascin-C-non-producing carcinoma cells. Of the steroids examined, hydrocortisone most effectively inhibited the secretion of tenascin-C. These steroids did not affect EGF-induced autophosphorylation or de novo synthesis of EGF receptors, nor did they compete for the binding of EGF to its receptor. Our results indicate that the induction of tenascin-C by EGF and its down-regulation by steroids might proceed in these carcinoma cells through Separate Signal transduction pathways.

B. Abbott - One of the best experts on this subject based on the ideXlab platform.

  • A search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology at sqrt(s) = 1.96 TeV
    Physical Review Letters, 2008
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, M. Ahsan, G.d. Alexeev, G. Alkhazov
    Abstract:

    We report a search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology, using an integrated luminosity of 0.93 inverse femtobarn recorded by the D0 detector at the Fermilab Tevatron Collider. The analysis includes Signal contributions from pp->ZH->nu nu b b, as well as from WH production in which the charged lepton from the W boson decay is undetected. Neural networks are used to Separate Signal from background. In the absence of a Signal, we set limits on the cross section of pp->VH times the branching ratio of H->bb at the 95% C.L. of 2.6 - 2.3 pb, for Higgs boson masses in the range 105 - 135 GeV, where V=W,Z. The corresponding expected limits range from 2.8 pb - 2.0 pb.

  • Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$
    Physical Review Letters, 2007
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, S.h. Ahn, M. Ahsan, G.d. Alexeev
    Abstract:

    The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to Separate Signal from background and measure sigma(ppbar->tb+X,tqb+X) = 4.9 +- 1.4 pb. The probability to measure a cross section at this value or higher in the absence of Signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the CKM matrix element that describes the Wtb coupling and find 0.68 < |Vtb|

T. Adams - One of the best experts on this subject based on the ideXlab platform.

  • A search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology at sqrt(s) = 1.96 TeV
    Physical Review Letters, 2008
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, M. Ahsan, G.d. Alexeev, G. Alkhazov
    Abstract:

    We report a search for the standard model Higgs boson in the missing energy and acoplanar b-jet topology, using an integrated luminosity of 0.93 inverse femtobarn recorded by the D0 detector at the Fermilab Tevatron Collider. The analysis includes Signal contributions from pp->ZH->nu nu b b, as well as from WH production in which the charged lepton from the W boson decay is undetected. Neural networks are used to Separate Signal from background. In the absence of a Signal, we set limits on the cross section of pp->VH times the branching ratio of H->bb at the 95% C.L. of 2.6 - 2.3 pb, for Higgs boson masses in the range 105 - 135 GeV, where V=W,Z. The corresponding expected limits range from 2.8 pb - 2.0 pb.

  • Evidence for production of single top quarks and first direct measurement of $|V_{tb}|$
    Physical Review Letters, 2007
    Co-Authors: V.m. Abazov, B. Abbott, M. Abolins, B.s. Acharya, M. Adams, T. Adams, E. Aguilo, S.h. Ahn, M. Ahsan, G.d. Alexeev
    Abstract:

    The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron ppbar collider. Using a 0.9 fb^-1 dataset, we apply a multivariate analysis to Separate Signal from background and measure sigma(ppbar->tb+X,tqb+X) = 4.9 +- 1.4 pb. The probability to measure a cross section at this value or higher in the absence of Signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the CKM matrix element that describes the Wtb coupling and find 0.68 < |Vtb|

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