Skip to Main content Skip to Navigation
Journal articles

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

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.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00767535
Contributor : Sylvie Flores <>
Submitted on : Thursday, December 20, 2012 - 6:56:52 AM
Last modification on : Wednesday, November 25, 2020 - 4:10:43 PM

Links full text

Identifiers

Citation

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, American Physical Society, 2013, 87, pp.032001. ⟨10.1103/PhysRevD.87.032001⟩. ⟨in2p3-00767535⟩

Share

Metrics

Record views

515