A search for pair production of second-generation scalar leptoquarks in the final state with two muons and two jets is performed using proton-proton collision data at root s = 7 TeV collected by the CMS detector at the LHC. The data sample used corresponds to an integrated luminosity of 34 pb(-1). The number of observed events is in good agreement with the predictions from the standard model processes. An upper limit is set on the second-generation leptoquark cross section times beta(2) as a function of the leptoquark mass, and leptoquarks with masses below 394 GeV are excluded at a 95% confidence level for beta = 1, where beta is the leptoquark branching fraction into a muon and a quark. These limits are the most stringent to date

Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., et al. (2011). Search for Pair Production of Second-Generation Scalar Leptoquarks in pp Collisions at root s=7 TeV. PHYSICAL REVIEW LETTERS, 106(20) [10.1103/PhysRevLett.106.201803].

Search for Pair Production of Second-Generation Scalar Leptoquarks in pp Collisions at root s=7 TeV

De Guio, F;GHEZZI, ALESSIO;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A;Govoni, P;DINARDO, MAURO EMANUELE;
2011

Abstract

A search for pair production of second-generation scalar leptoquarks in the final state with two muons and two jets is performed using proton-proton collision data at root s = 7 TeV collected by the CMS detector at the LHC. The data sample used corresponds to an integrated luminosity of 34 pb(-1). The number of observed events is in good agreement with the predictions from the standard model processes. An upper limit is set on the second-generation leptoquark cross section times beta(2) as a function of the leptoquark mass, and leptoquarks with masses below 394 GeV are excluded at a 95% confidence level for beta = 1, where beta is the leptoquark branching fraction into a muon and a quark. These limits are the most stringent to date
Articolo in rivista - Articolo scientifico
Constraints; Particles, LHC, High energy physics
English
2011
106
20
201803
none
Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., et al. (2011). Search for Pair Production of Second-Generation Scalar Leptoquarks in pp Collisions at root s=7 TeV. PHYSICAL REVIEW LETTERS, 106(20) [10.1103/PhysRevLett.106.201803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/46324
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