Search for contact interactions in opposite-sign dimuon events in pp collisions at sqrt(s) = 7 TeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review D Year : 2013

Search for contact interactions in opposite-sign dimuon events in pp collisions at sqrt(s) = 7 TeV

S. Chatrchyan
  • Function : Author
Pierre Busson
R. Granier de Cassagnac
C. Mironov
P. Paganini
J.-L. Agram
C. Collard
E. Conte
P. van Hove
D. Contardo
M. Gouzevitch
M. Lethuillier
V. Sordini
P. Verdier
S. Viret

Abstract

Results are reported from a search for the effects of contact interactions using events with a high-mass, oppositely-charged muon pair. The events are collected in proton-proton collisions at sqrt(s) = 7 TeV using the Compact Muon Solenoid detector at the Large Hadron Collider. The data sample corresponds to an integrated luminosity of 5.3 inverse femtobarns. The observed dimuon mass spectrum is consistent with that expected from the standard model. The data are interpreted in the context of a quark- and muon-compositeness model with a left-handed isoscalar current and an energy scale parameter Lambda. The 95% confidence level lower limit on Lambda is 9.5 TeV under the assumption of destructive interference between the standard model and contact-interaction amplitudes. For constructive interference, the limit is 13.1 TeV. These limits are comparable to the most stringent ones reported to date.

Dates and versions

in2p3-00767535 , version 1 (20-12-2012)

Identifiers

Cite

S. Chatrchyan, M. Besançon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for contact interactions in opposite-sign dimuon events in pp collisions at sqrt(s) = 7 TeV. Physical Review D, 2013, 87, pp.032001. ⟨10.1103/PhysRevD.87.032001⟩. ⟨in2p3-00767535⟩
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