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Measurement of jet multiplicity distributions in tt¯ production in pp collisions at vs = 7TeV

Abstract: The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton+jets decay channels using data corresponding to an integrated luminosity of 5.0 fb-1. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the tt¯ production is determined as a function of the additional jet multiplicity in the lepton+jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

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Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at s?=13TeV - Artículo de Revista
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Measurement of associated production of a W boson and a charm quark in proton-proton collisions at ?s=13TeV - Artículo de Revista
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Measurement of exclusive Y photoproduction from protons in pPb collisions at ?sNN=5.02TeV - Artículo de Revista
Measurement of the average very forward energy as a function of the track multiplicity at central pseudorapidities in proton-proton collisions at ?s=13TeV - Artículo de Revista
Measurement of the energy density as a function of pseudorapidity in proton?proton collisions at ?s=13TeV - Artículo de Revista
Measurement of the tt¯ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at ?s=13TeV - Artículo de Revista
Measurement of the top quark mass in the all-jets final state at ?s=13TeV and combination with the lepton+jets channel - Artículo de Revista
Measurements of triple-differential cross sections for inclusive isolated-photon+jet events in pppp collisions at ?s=8TeV - Artículo de Revista
Search for a heavy pseudoscalar boson decaying to a Z and a Higgs boson at ?s=13TeV - Artículo de Revista
Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at ?s=13TeV - Artículo de Revista
Search for dark matter produced in association with a Higgs boson decaying to a pair of bottom quarks in proton?proton collisions at ?s=13TeV - Artículo de Revista
Search for new physics in top quark production in dilepton final states in proton-proton collisions at ?s=13 TeV - Artículo de Revista
Search for rare decays of Z and Higgs bosons to J/? and a photon in proton-proton collisions at ?s = 13TeV - Artículo de Revista
Search for resonant production of second-generation sleptons with same-sign dimuon events in proton-proton collisions at ?s=13 TeV - Artículo de Revista
Search for single production of vector-like quarks decaying to a top quark and a W boson in proton-proton collisions at ?s = 13 TeV - Artículo de Revista
Search for supersymmetry in events with a photon, jets, b-jets, and missing transverse momentum in proton-proton collisions at 13 TeV - Artículo de Revista
Search for vector-like quarks in events with two oppositely charged leptons and jets in proton-proton collisions at ?s = 13 TeV - Artículo de Revista
Study of the underlying event in top quark pair production in pp collisions at 13 TeV - Artículo de Revista
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Search for direct pair production of supersymmetric partners to the ? lepton in proton?proton collisions at ?s=13TeV - Artículo de Revista
Search for production of four top quarks in final states with same-sign or multiple leptons in proton?proton collisions at ?s=13TeV - Artículo de Revista
Measurement of electroweak production of a W boson in association with two jets in proton-proton collisions at ?s=13Tev - Artículo de Revista
Extraction and validation of a new set of CMS PYTHIA8 tunes from underlying-event measurements - Artículo de Revista
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Evidence for WW production from double-parton interactions in proton-proton collisions at ?s=13TeV - Artículo de Revista
Search for physics beyond the standard model in events with jets and two same-sign or at least three charged leptons in proton-proton collisions at ?s = 13 TeV - Artículo de Revista
Measurement of differential cross sections and charge ratios for t-channel single top quark production in proton?proton collisions at ?s=13TeV - Artículo de Revista
Measurement of t t ¯ normalised multi-differential cross sections in pp collisions at ?s=13TeV , and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions - Artículo de Revista

Fuente: European Physical Journal C, Vol. 74, Num. 8, Art. Num. 3014, (2014)

Editorial: Springer New York LLC

Fecha de publicación: 01/08/2014

Nº de páginas: 29

Tipo de publicación: Artículo de Revista

DOI: 10.1140/epjc/s10052-014-3014-0

ISSN: 1434-6044,1434-6052

Proyecto español: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Url de la publicación: https://doi.org/10.1140/epjc/s10052-014-3014-0

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Autoría

CHATRCHYAN, SERGUEI

JAVIER ANDRES BROCHERO CIFUENTES

JOSE IBAN CABRILLO BARTOLOME

ALICIA CALDERON TAZON

JORGE DUARTE CAMPDERROS

MARCOS FERNANDEZ GARCIA

GERVASIO GOMEZ GRAMUGLIO

FRANCISCO JAVIER GONZALEZ SANCHEZ

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

JESUS MARCO DE LUCAS

RAFAEL JOSE MARCO DE LUCAS

CELSO MARTINEZ RIVERO

FRANCISCO MATORRAS WEINIG

FRANCISCA JAVIELA MUÑOZ SANCHEZ

JONATAN PIEDRA GOMEZ

MARIA TERESA RODRIGO ANORO

ANA YAIZA RODRIGUEZ MARRERO

ALBERTO RUIZ JIMENO

LUCA SCODELLARO

IVAN VILA ALVAREZ

ROCIO VILAR CORTABITARTE

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