Single W production in e − γ collisions through the decay lepton spectrum to probe γ WW couplings
Tóm tắt
The effect of an anomalous γWW coupling in the e
−
γ →
$\nu_{e} W^{-}$
process through the angular and energy spectrum of the secondary leptons is investigated. Within the narrow-width-approximation (NWA), a semianalytical study of the secondary lepton energy angle double distribution is considered. Different observables constructed using this distribution are expected to be very effective to probe the anomalous coupling at a typical International Linear Collider machine. Further, suitable combinations of these observables could be used to disentangle the effect of contributions from different terms in the effective Lagrangian.
Từ khóa
Tài liệu tham khảo
The ATLAS and CMS Collaboration, ATLAS-CONF-2011-157, CMS PAS HIG-11-023
ILC Collaboration: J Brau et al, arXiv:0712.1950 [physics.acc-ph] ILC Collaboration: G Aarons et al, arXiv:0709.1893 [hep-ph]
K Hagiwara, R D Peccei, D Zeppenfeld and K Hikasa, Nucl. Phys. B282, 253 (1987)
LEP Electroweak Working Group: J Alcaraz et al, arXiv:hep-ex/0612034
S J Brodsky, T G Rizzo and I Schmidt, Phys. Rev. D52, 4929 (1995)
M A Doncheski, S Godfrey and K A Peterson, Phys. Rev. D59, 117301 (1999)
I Sahin and A A Billue, Phys. Rev. D83, 035011 (2011)
E Yehudai, Phys. Rev. D41, 33 (1990)
I F Ginzburg et al, Nucl. Instrum. Methods 205, 47 (1993); 219, 5 (1984)
V I Tenlov, arXiv:0908.3136 [physics, acc-ph]
T Hahn, Comput. Phys. Commun. 168, 78 (2005)
J A M Vermaseren, arXiv:math-ph/0010025