Search for resonant t̄t production in lepton+jets events in pp collisions at √s=7 TeV

S Chatrchyan; J. A Brochero Cifuentes; I. J Cabrillo; Alicia Calderon; S. H Chuang; J Duarte Campderros; Marta Felcini; M Fernández; G Gómez; J González Sánchez; A Graziano; C Jorda; A López Virto; Jesús Marco; Rafael Marco; Celso Martínez-Rivero; Francisco Matorras; F. J Muñoz Sánchez; Jonatan Piedra; Teresa Rodrigo; Ana Y Rodríguez Marrero; Alberto Ruiz Jimeno; Luca Scodellaro; Iván Vila; Rocío Vilar; CMS Collaboration

doi:10.1007/JHEP12(2012)015

Back

Search for resonant t̄t production in lepton+jets events in pp collisions at √s=7 TeV

Journal article

Open access

Peer reviewed

Search for resonant t̄t production in lepton+jets events in pp collisions at √s=7 TeV

S Chatrchyan, J. A Brochero Cifuentes, I. J Cabrillo, Alicia Calderon, S. H Chuang, J Duarte Campderros, Marta Felcini, M Fernández, G Gómez, J González Sánchez, …

The journal of high energy physics, Vol.2012(12), 15

01/01/2012

DOI: 10.1007/JHEP12(2012)015

Files and links (1)

url

https://doi.org/10.1007/JHEP12(2012)015View

Published (Version of record) Open Access

Abstract

A model-independent search for the production of heavy resonances decaying into top-antitop quark pairs is presented. The search is based on events containing one lepton (muon or electron) and at least two jets selected from data samples corresponding to an integrated luminosity of 4.4-5.0 fb−1 collected in pp collisions at s√=7 TeV. Results are presented from the combination of two dedicated searches optimized for boosted production and production at threshold. No excess of events is observed over the expected yield from the standard model processes. Topcolor Z′ bosons with narrow (wide) width are excluded at 95% confidence level for masses below 1.49 (2.04) TeV and an upper limit of 0.3 (1.3) pb or lower is set on the production cross section times branching fraction for resonance masses above 1 TeV. Kaluza-Klein excitations of a gluon with masses below 1.82 TeV (at 95% confidence level) in the Randall-Sundrum model are also excluded, and an upper limit of 0.7 pb or lower is set on the production cross section times branching fraction for resonance masses above 1 TeV.

Details

Title: Subtitle: Search for resonant t̄t production in lepton+jets events in pp collisions at √s=7 TeV
Creators: S Chatrchyan - CERN
J. A Brochero Cifuentes
I. J Cabrillo
Alicia Calderon
S. H Chuang
J Duarte Campderros
Marta Felcini
M Fernández
G Gómez
J González Sánchez
A Graziano
C Jorda
A López Virto
Jesús Marco
Rafael Marco
Celso Martínez-Rivero
Francisco Matorras
F. J Muñoz Sánchez
Jonatan Piedra
Teresa Rodrigo
Ana Y Rodríguez Marrero
Alberto Ruiz Jimeno
Luca Scodellaro
Iván Vila
Rocío Vilar
CMS Collaboration
Contributors: Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The journal of high energy physics, Vol.2012(12), 15
Publisher: Springer
DOI: 10.1007/JHEP12(2012)015
ISSN: 1126-6708
eISSN: 1029-8479
Language: English
Date published: 01/01/2012
Academic Unit: Physics and Astronomy
Record Identifier: 9984199938502771

Metrics

3 Record Views

5 Times Cited - Web of Science

See more details