Estimation of Z′ Boson Parameters by the Forward-Backward Asymmetry of Drell-Yan Process at 7 TeV at the LHC

被引:0
作者
Pevzner, A. [1 ]
Skalozub, V [1 ]
机构
[1] Oles Honchar Dnipropetrovsk Natl Univ, Dept Theoret Phys, Dnepropetrovsk, Ukraine
来源
2015 INTERNATIONAL YOUNG SCIENTISTS FORUM ON APPLIED PHYSICS (YSF) | 2015年
关键词
Z ' boson; new physics; beyond the Standard model; high energy physics; Large Hadron Collider; COLLISIONS;
D O I
暂无
中图分类号
O59 [应用物理学];
学科分类号
摘要
The forward-backward asymmetry of the Drell-Yan process at the LHC at 7 TeV is investigated. It is found that in some kinematical areas the 1-20 sigma deviations of the CMS results from the Standard model predictions are observed. These deviations are treated in terms of Z' boson. In the model-independent approach, the Z' vector and axial-vector couplings to the Standard model fermions are estimated at the mass m(z'), = 3 TeV and 3,5 TeV and Gamma(z')/m(z'), = 0,1. It is shown that at 1 sigma level Z' boson signal can be clearly distinguished from the CMS data. It is observed also that this result does not depend strongly on the Z' mass.
引用
收藏
页数:4
相关论文
共 9 条
[1]   Forward-backward asymmetry of Drell-Yan lepton pairs in pp collisions at √s=7 TeV [J].
Chatrchyan, S. ;
Khachatryan, V. ;
Sirunyan, A. M. ;
Tumasyan, A. ;
Adam, W. ;
Bergauer, T. ;
Dragicevic, M. ;
Eroe, J. ;
Fabjan, C. ;
Friedl, M. ;
Fruehwirth, R. ;
Ghete, V. M. ;
Hammer, J. ;
Hoermann, N. ;
Hrubec, J. ;
Jeitler, M. ;
Kiesenhofer, W. ;
Knuenz, V. ;
Krammer, M. ;
Liko, D. ;
Mikulec, I. ;
Pernicka, M. ;
Rahbaran, B. ;
Rohringer, C. ;
Rohringer, H. ;
Schoefbeck, R. ;
Strauss, J. ;
Taurok, A. ;
Wagner, P. ;
Waltenberger, W. ;
Walzel, G. ;
Widl, E. ;
Wulz, C. -E. ;
Mossolov, V. ;
Shumeiko, N. ;
Gonzalez, J. Suarez ;
Bansal, S. ;
Cornelis, T. ;
De Wolf, E. A. ;
Janssen, X. ;
Luyckx, S. ;
Maes, T. ;
Mucibello, L. ;
Ochesanu, S. ;
Roland, B. ;
Rougny, R. ;
Selvaggi, M. ;
Staykova, Z. ;
Van Haevermaet, H. ;
Van Mechelen, R. .
PHYSICS LETTERS B, 2013, 718 (03) :752-772
[2]   MASSIVE LEPTON-PAIR PRODUCTION IN HADRON-HADRON COLLISIONS AT HIGH ENERGIES [J].
DRELL, SD ;
YAN, TM .
PHYSICAL REVIEW LETTERS, 1970, 25 (05) :316-&
[3]   MODEL-INDEPENDENT ESTIMATES FOR THE ABELIAN Z′ BOSON AT MODERN HADRON COLLIDERS [J].
Gulov, Alexey ;
Kozhushko, Andrey .
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2011, 26 (23) :4083-4100
[4]   FITTING OF Z′ PARAMETERS [J].
Gulov, Alexey ;
Skalozub, Vladimir .
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2010, 25 (32) :5787-5815
[5]  
Rizzo T.G., 2006, ARXIV0610104V1HEPPH
[6]  
The ATLAS Collaboration, 2014, ARXIV14054123V2HEPEX
[7]  
The CMS Collaboration, 2013, ARXIV13107291V2HEPEX
[8]  
The CMS Collaboration, 2011, ARXIV11080566V1HEPEX
[9]  
The CMS Collaboration, 2015, ARXIV150603062V1HEPE