Artigo
Measurement of the inclusive production cross sections for forward jets and for dijet events with one forward and one central jet in pp collisions at root s=7 TeV
Fecha
2012-06-01Registro en:
Journal of High Energy Physics. New York: Springer, n. 6, p. 38, 2012.
1029-8479
10.1007/JHEP06(2012)036
WOS:000306416500037
WOS000306416500037.pdf
Autor
Yerevan Phys Inst
Inst Hochenergiephys OeAW
Natl Ctr Particle & High Energy Phys
Univ Antwerp
Vrije Univ Brussel
Univ Libre Brussels
Univ Ghent
Catholic Univ Louvain
Univ Mons
Centro Brasileiro de Pesquisas Físicas (CBPF)
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (Unesp)
Bulgarian Acad Sci
Univ Sofia
Inst High Energy Phys
Peking Univ
Universidad de los Andes
Tech Univ Split
Univ Split
Inst Rudjer Boskov
Univ Cyprus
Charles Univ Prague
Acad Sci Res & Technol Arab Republ Egypt
NICPB
Univ Helsinki
Helsinki Inst Phys
Lappeenranta Univ Technol
CNRS
CEA Saclay
Ecole Polytech
Univ Haute Alsace Mulhouse
Ctr Calcul
Univ Lyon 1
Tbilisi State Univ
RWTH Aachen University
DESY
Univ Hamburg
Univ Karlsruhe
Inst Nucl Phys Demokritos
Univ Athens
Univ Ioannina
KFKI Res Inst Particle & Nucl Phys
Inst Nucl Res ATOMKI
Univ Debrecen
Panjab Univ
University of Delhi
Saha Inst Nucl Phys
Bhabha Atom Res Ctr
Tata Inst Fundamental Res EHEP
Tata Inst Fundamental Res HECR
Inst Res Fundamental Sci IPM
Ist Nazl Fis Nucl
Univ Bari
Politecn Bari
Univ Bologna
Univ Catania
Univ Florence
Univ Milano Bicocca
Univ Naples Federico II
Univ Padua
Univ Trent
Univ Pavia
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Scuola Normale Super Pisa
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Univ Auckland
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Quaid I Azam Univ
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Soltan Inst Nucl Studies
Lab Instrumentacao & Fis Exp Particulas
Joint Inst Nucl Res
Petersburg Nucl Phys Inst
Russian Acad Sci
Institute for Theoretical and Experimental Physics (ITEP)
Moscow MV Lomonosov State Univ
PN Lebedev Phys Inst
State Res Ctr Russian Federat
University of Belgrade
Vinca Inst Nucl Sci
Ctr Invest Energet Medioambientales & Tecnol CIEA
Univ Autonoma Madrid
Univ Oviedo
Univ Cantabria
CERN
Paul Scherrer Inst
ETH
Univ Zurich
Natl Cent Univ
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Kharkov Inst Phys & Technol
Univ Bristol
Rutherford Appleton Lab
Univ London Imperial Coll Sci Technol & Med
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University of California, Riverside (UCR)
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Resumen
The inclusive production cross sections for forward jets, as well for jets in dijet events with at least one jet emitted at central and the other at forward pseudorapidities, are measured in the range of transverse momenta p(T) = 35-150 GeV/c in proton-proton collisions at root s = 7 TeV by the CMS experiment at the LHC. Forward jets are measured within pseudorapidities 3.2<|eta|<4.7, and central jets within the |eta|<2.8 range. The double differential cross sections with respect to pt and eta are compared to predictions from three approaches in perturbative quantum chromodynamics: (i) next-to-leading-order calculations obtained with and without matching to parton-shower Monte Carlo simulations, (ii) PYTHIA and HERWIG parton-shower event generators with different tunes of parameters, and (iii) CASCADE and HEJ models, including different non-collinear corrections to standard single-parton radiation. The single-jet inclusive forward jet spectrum is well described by all models, but not all predictions are consistent with the spectra observed for the forward-central dijet events.