2014 article

Indirect measurement of sin2θW (or MW) using μ+μ- pairs from γ* /Z bosons produced in p p collisions at a center-of-momentum energy of 1.96 TeV INDIRECT MEASUREMENT of sin2θW (OR ... T. AALTONEN et al.

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antoš, G. Apollinari, J. A. Appel, T. Arisawa, A. Artikov, J. Asaadi, W. Ashmanskas, B. Auerbach, A. Aurisano, F. Azfar, W. Badgett, T. Bae, A. Barbaro‐Galtieri, V. E. Barnes, B. A. Barnett, P. Barria, P. Bartos, M. Bauce, F. Bedeschi, S. Behari, G. Bellettini, J. Bellinger, D Benjamin, A. Beretvas, A. Bhatti, K. R. Bland, B. Blumenfeld, A. Bocci, A. Bodek, D. Bortoletto, J. Boudreau, A. Boveia, L. Brigliadori, C. Bromberg, E. Brücken, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, P. J. Bussey, P. Butti, A. Buzatu, A. Calamba, S. Camarda, M. Campanelli, F. Canelli, B. Carls, D. Carlsmith, R. Carosi, S. Carrillo, B. Casal, M. Casarsa, A. Castro, P. Catastini, D. Cauz, V. Cavaliere, F. Šforza, A. Cerri, L. Cerrito, Y. C. Chen, M. Chertok, G. Chiarelli, G. Chlachidze, K. Cho, D. Chokheli, A. Clark, C. Clarke, M. E. Convery, J. Conway, M. Corbo, M. Cordelli, C. A. Cox

26Citations signalées, ce qui n’est pas une note de qualité

37Institutions déclarées

10Pays d’affiliation déclarés

Rattachement africain : fi, it, us, sk, jp, ru, gb, es, tw, ch. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

Drell-Yan lepton pairs are produced in the process pp̄→μ+μ- +X through an intermediate γ*/Zboson. The forward-backward asymmetry in the polar-angle distribution of the μ- as a function of the invariant mass of the μ+μ- pair is used to obtain the effective leptonic determination sin2θefflept of the electroweak-mixing parameter sin2θW, from which the value of sin2θW is derived assuming the standard model. The measurement sample, recorded by the Collider Detector at Fermilab (CDF), corresponds to 9.2fb-1 of integrated luminosity from pp̄ collisions at a center-of-momentum energy of 1.96 TeV, and is the full CDF Run II data set. The value of sin2θefflept is found to be 0.2315±0. 0010, where statistical and systematic uncertainties are combined in quadrature. When interpreted within the context of the standard model using the on-shell renormalization scheme, where sin2θW=1-MW2/MZ2, the measurement yields sin2θW=0.2233±0.0009, or equivalently a W-boson mass of 80.365±0.047GeV/c2. The value of the W-boson mass is in agreement with previous determinations in electron-positron collisions and at the Tevatron collider. © 2014 American Physical Society.

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Les institutions déclarées

University of Helsinki University of Padua University of Michigan Ann Arbor Center for Independent Living Fermi National Accelerator Laboratory Comenius University Bratislava Waseda University Joint Institute for Nuclear Research Texas A&M University Argonne National Laboratory University of Oxford Lawrence Berkeley National Laboratory Purdue University West Lafayette Johns Hopkins University University of Pisa University of Wisconsin–Madison Duke University Rockefeller University Baylor University University of Rochester University of Pittsburgh University of Chicago University of Bologna Michigan State University University of Glasgow Carnegie Mellon University Universitat Autònoma de Barcelona University College London University of Illinois Urbana-Champaign University of Florida Universidad de Cantabria Harvard University Press University of Udine Academia Sinica University of California, Davis University of Geneva Wayne State University

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesDark Matter and Cosmic PhenomenaNeutrino Physics Research

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