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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/24430
Title: 
Transverse-Momentum and Pseudorapidity Distributions of Charged Hadrons in pp Collisions at root s=7 TeV
Author(s): 
Institution: 
  • Yerevan Phys Inst
  • OeAW
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Univ Estado Rio de Janeiro
  • Universidade Estadual Paulista (UNESP)
  • Bulgarian Acad Sci
  • Univ Sofia
  • Inst High Energy Phys
  • Lappeenranta Univ Technol
  • Univ Calif Davis
  • Universidad de los Andes
  • Univ Calif Los Angeles
  • University of California, Riverside (UCR)
  • Univ Calif San Diego
  • Univ Calif Santa Barbara
  • CALTECH
  • Carnegie Mellon Univ
  • Univ Colorado
  • CIEMAT
  • Cornell Univ
  • CNRS
  • Fairfield Univ
  • Fermilab Natl Accelerator Lab
  • Tech Univ Split
  • Univ Florida
  • Florida Int Univ
  • Florida State University
  • Florida Inst Technol
  • Univ Illinois
  • RWTH Aachen University
  • Univ Iowa
  • Johns Hopkins Univ
  • CEA Saclay
  • University of Kansas (KU)
  • Kansas State University
  • Univ Calif Berkeley
  • Univ Split
  • University of Maryland
  • MIT
  • Univ Minnesota
  • DESY
  • University of Mississippi
  • Univ Nebraska
  • SUNY Buffalo
  • Northeastern University
  • Northwestern University (NU)
  • Univ Notre Dame
  • Ohio State Univ
  • Rudjer Boskovic Inst
  • Princeton University
  • Univ Hamburg
  • Univ Puerto Rico
  • Purdue Univ
  • Purdue University Calumet
  • Rice University
  • Univ Haute Alsace Mulhouse
  • University of Rochester
  • Rockefeller Univ
  • Rutgers State Univ
  • Univ Tennessee
  • Texas A&M Univ
  • Univ Karlsruhe
  • Univ Cyprus
  • Texas Tech Univ
  • Vanderbilt Univ
  • University of Virginia (UVA)
  • Wayne State Univ
  • IN2P3
  • Univ Wisconsin
  • European Org Nucl Res
  • Ecole Polytech
  • Soltan Inst Nucl Studies
  • Inst Nucl Phys Demokritos
  • Moscow MV Lomonosov State Univ
  • Inst Nucl Res ATOMKI
  • Acad Sci Res & Technol,Arab Republ Egypt
  • Institute for Theoretical and Experimental Physics (ITEP)
  • Univ Lyon 1
  • Paul Scherrer Inst
  • KFKI Res Inst Particle & Nucl Phys
  • Natl Ctr Particle & High Energy Phys
  • Univ Athens
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Brussels
  • NICPB
  • Univ Helsinki
  • Helsinki Inst Phys
  • Acad Sci
  • Univ Ioannina
  • Peking Univ
  • Univ Debrecen
  • Univ Autonoma Madrid
  • Panjab Univ
  • University of Delhi
  • Bhabha Atom Res Ctr
  • Tata Inst Fundamental Res EHEP
  • Tata Inst Fundamental Res HECR
  • Inst Studies Theoret Phys & Math IPM
  • Ist Nazl Fis Nucl
  • Univ Bari
  • Middle E Tech Univ
  • Politecn Bari
  • Univ Oviedo
  • Univ Bologna
  • Univ Catania
  • Univ Florence
  • Bogazici Univ
  • Univ Milano Bicocca
  • Univ Cantabria
  • Univ Naples Federico II
  • Univ Padua
  • Univ Trent
  • Univ Pavia
  • Kharkov Inst Phys & Technol
  • Univ Perugia
  • Univ Pisa
  • Scuola Normale Super Pisa
  • Univ Roma La Sapienza
  • Univ Bristol
  • Univ Turin
  • Univ Trieste
  • Univ Piemonte Orientale Novara
  • Kyungpook Natl Univ
  • Chonnam Natl Univ
  • Korea University
  • Univ Seoul
  • Sungkyunkwan Univ
  • Vilnius Univ
  • Rutherford Appleton Lab
  • IPN
  • Univ Iberoamer
  • Benemerita Univ Autonoma Puebla
  • Univ Autonoma San Luis Potosi
  • Univ Auckland
  • Univ Canterbury
  • ETH
  • Quaid I Azam Univ
  • Inst Expt Phys
  • Lab Instrumentacao & Fis Expt Particulars
  • Univ London
  • Petersburg Nucl Phys Inst
  • PN Lebedev Phys Inst
  • Vinca Inst Nucl Sci
  • Natl Cent Univ
  • Natl Taiwan Univ
  • Cukurova Univ
  • Brunel Univ
  • Boston University
  • Brown University
ISSN: 
0031-9007
Sponsorship: 
  • FMSR (Austria)
  • Fonds de la Recherche Scientifique (FNRS)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • MES (Bulgaria)
  • National Natural Science Foundation of China (NSFC)
  • COLCIENCIAS (Colombia)
  • MSES (Croatia)
  • Research Promotion Foundation (RPF)
  • National Institute of Chemical Physics and Biophysics (NICPB)
  • Academy of Finland
  • Institut national de physique nucléaire et de physique des particules (IN2P3/CNRS)
  • Bundesministerium für Bildung und Forschung (BMBF)
  • General Secretariat for Research and Technology (GSRT)
  • OTKA and NKTH (Hungary)
  • Department of Science and Technology (DST) - India
  • Institute for Research in Fundamental Sciences (IPM)
  • Science Foundation Ireland (SFI)
  • Istituto Nazionale di Fisica Nucleare (INFN)
  • NRF and WCU (Korea)
  • LAS (Lithuania)
  • Consejo Nacional de Ciencia y Tecnología (CONACYT)
  • Pakistan Atomic Energy Commission (PAEC)
  • SCSR (Poland)
  • Fundação para a Ciência e a Tecnologia (FCT)
  • Joint Institute for Nuclear Research (JINR)
  • MST and MAE (Russia)
  • MSTDS (Serbia)
  • Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
  • Swiss Funding Agencies (Switzerland)
  • NSC (Taipei)
  • Türkiye Atom Enerjisi Kurumu (TAEK)
  • Science and Technology Facilities Council (STFC)
  • Department of Energy (DOE) and National Science Foundation (NSF) - USA
Abstract: 
Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at root s = 7 TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/d eta vertical bar(vertical bar eta vertical bar<0.5) = 5.78 +/- 0.01(stat) +/- 0.23(stat) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from root s = 0.9 to 7 TeV is [66.1 +/- 1.0(stat) +/- 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 +/- 0.005(stat) +/- 0.015(syst) GeV/c. The results are compared with similar measurements at lower energies.
Issue Date: 
6-Jul-2010
Citation: 
Physical Review Letters. College Pk: Amer Physical Soc, v. 105, n. 2, p. 14, 2010.
Time Duration: 
14
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevLett.105.022002
URI: 
http://hdl.handle.net/11449/24430
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/24430
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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