摘要The prospects of anomalous ZZγ and ZZZ triple gauge boson couplings are investigated at the Large Hadron Collider (LHC) through an excess of events in ZZ diboson production. Two such channels are selected and the tree level results including leptonic final states are discussed: ZZ→?1−?1+2-?2+ and ZZ→?−?+νν(?,?1,2=e,μ). The results in the full finite width method are compared with the narrow width approximation (NWA) method in detail. Besides the Z boson transverse momentum distributions, the azimuthal angle between the Z boson decay to fermions, ΔΦ, and their separations in the pseudo−rapidity-azimuthal angle plane, ΔR, as well as the sensitivity on anomalous couplings are displayed at the 14 TeV LHC.
Abstract：The prospects of anomalous ZZγ and ZZZ triple gauge boson couplings are investigated at the Large Hadron Collider (LHC) through an excess of events in ZZ diboson production. Two such channels are selected and the tree level results including leptonic final states are discussed: ZZ→ℓ1−ℓ1+ℓ2-ℓ2+ and ZZ→ℓ−ℓ+νν(ℓ,ℓ1,2=e,μ). The results in the full finite width method are compared with the narrow width approximation (NWA) method in detail. Besides the Z boson transverse momentum distributions, the azimuthal angle between the Z boson decay to fermions, ΔΦ, and their separations in the pseudo−rapidity-azimuthal angle plane, ΔR, as well as the sensitivity on anomalous couplings are displayed at the 14 TeV LHC.
SUN Hao**. Non-Standard ZZ Production with Leptonic Decays at the Large Hadron Collider[J]. 中国物理快报, 2012, 29(4): 41401-041401.
SUN Hao**. Non-Standard ZZ Production with Leptonic Decays at the Large Hadron Collider. Chin. Phys. Lett., 2012, 29(4): 41401-041401.
[1] Hagiwara K, Peccei R D, Zeppenfeld D and Hikasa K 1987 Nucl. Phys. B 282 253Gaemers K J F and Gounaris G J 1979 Z. Phys. C 1 259[2] Ellison J and Wudka J 1998 Annu. Rev. Nucl. Part. Sci. 48 33[3] Aaltonen T et al [CDF Collaboration] 2012 Phys. Rev. Lett. (submitted)[4] Boudjema F, Dombey N and Krawczyk M 1989 Phys. Lett. B 222 507[5] Gounaris G J, Layssac J and Renard F M 2000 Phys. Rev. D 61 073013[6] Baur U and Rainwater D 2000 Phys. Rev. D 62 113011[7] Sun H and Wackeroth D 2012 QCD Corrections to Non Standard ZZ Production with Leptonic Decays at the Large Hadron Collider (in praration)[8] Hameren A van 2010 arXiv:1003.4953[hep-ph][9] Kawabata S 1995 Comput. Phys. Commun. 88 309Yuasa F, Perret Gallix D, Kawabata S and Ishikawa T 1997 Nucl. Instrum. Methods A 389 77[10] Nakamura K et al [Particle Data Group] 2010 J. Phys. G 37 075021[11] Aad G et al [ATLAS Collaboration] 2008 arXiv:0901.0512 [hep-ex][12] Airapetian A et al [ATLAS Collaboration] 1999 CERN LHCC-99-15
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