Limits on anomalous trilinear gauge boson couplings from WW, WZ and W gamma production in p(p)over-bar collisions at root s=1.96 TeV

作者：Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Askew, A.; Atkins, S.; Augsten, K.; Avila, C.; Badaud, F.; Bagby, L.; Baldin, B.; Bandurin, D. V.; Banerjee, S.; Barberis, E.; Baringer, P.; Bartlett, J. F.; Bassler, U.; Bazterra, V.; Bean, A.; Begalli, M.; Bellantoni, L.; Beri, S. B.; Bernardi, G.; Bernhard, R.; Bertram, I.; Besancon, M.; Beuselinck, R.; Bhat, P. C.; Bhatia, S.; Bhatnagar, V.; Blazey, G.; Blessing, S.; Bloom, K.

来源：Physics Letters B, 2012, 718(2): 451-459.

DOI：10.1016/j.physletb.2012.10.062

• CROSS-SECTION
• PP COLLISIONS
• SUPERSYMMETRY
• CONSTRAINTS
• DETECTOR
• PHYSICS

We present searches for the anomalous gamma WW and ZWW trilinear gauge boson couplings from WW and WZ production using lepton plus dijet final states and a combination with results from W gamma, WW, and WZ production with leptonic final states. The analyzed data correspond to up to 8.6 fb(-1) of integrated luminosity collected by the DO detector in p (p) over bar collisions at root s = 1.96 TeV. We set the most stringent limits at a hadron collider to date assuming two different relations between the anomalous coupling parameters Delta kappa(gamma), lambda, and Delta g(1)(z) for a cutoff energy scale Lambda = 2 TeV. The combined 68% C.L. limits are -0.057 < Delta kappa(gamma) < 0.154. -0.015 < lambda < 0.028, and -0.008 < Delta g(1)(z) < 0.054 for the LEP parameterization, and -0.007 < Delta kappa < 0.081 and -0.017 < lambda < 0.028 for the equal couplings parameterization. We also present the most stringent limits of the W boson magnetic dipole and electric quadrupole moments.

• 出版日期2012-12-5
• 单位西北大学; rutgers; 东北大学; 中国科学技术大学; 中国地震局