Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at √s=0.9 and 2.36 TeV

被引:0
作者
Khachatryan, V. [1 ]
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Bergauer, T. [2 ]
Dragicevic, M. [2 ]
Ero, J. [2 ]
Friedl, M. [2 ]
Fruehwirth, R. [2 ]
Ghete, V. M. [2 ]
Hammer, J. [2 ]
Haensel, S. [2 ]
Hoch, M. [2 ]
Hoermann, N. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ]
Kasieczka, G. [2 ]
Krammer, M. [2 ]
Liko, D. [2 ]
Mikulec, I. [2 ]
Pernicka, M. [2 ]
Rohringer, H. [2 ]
Schoefbeck, R. [2 ]
Strauss, J. [2 ]
Taurok, A. [2 ]
Teischinger, F. [2 ]
Waltenberger, W. [2 ]
Walzel, G. [2 ]
Widl, E. [2 ]
Wulz, C. -E. [2 ]
Mossolov, V. [3 ]
Shumeiko, N. [3 ]
Gonzalez, J. Suarez [3 ]
Benucci, L. [4 ]
De Wolf, E. A. [4 ]
Hashemi, M. [4 ]
Janssen, X. [4 ]
Maes, T. [4 ]
Mucibello, L. [4 ]
Ochesanu, S. [4 ]
Rougny, R. [4 ]
Selvaggi, M. [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Remortel, N. [4 ]
Adler, V. [5 ]
Beauceron, S. [5 ]
D'Hondt, J. [5 ]
Devroede, O. [5 ]
Kalogeropoulos, A. [5 ]
机构
[1] Yerevan Phys Inst, Yerevan 375036, Armenia
[2] OeAW, Inst Hochenergiephys, Vienna, Austria
[3] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS
[4] Univ Antwerp, B-2020 Antwerp, Belgium
[5] Vrije Univ Brussel, Brussels, Belgium
[6] Univ Libre Bruxelles, Brussels, Belgium
[7] Univ Ghent, B-9000 Ghent, Belgium
[8] Catholic Univ Louvain, B-1348 Louvain, Belgium
[9] Univ Mons, B-7000 Mons, Belgium
[10] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[11] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil
[12] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil
[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[14] Univ Sofia, BU-1126 Sofia, Bulgaria
[15] Inst High Energy Phys, Beijing 100039, Peoples R China
[16] Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China
[17] Univ Los Andes, Bogota, Colombia
[18] Tech Univ Split, Split, Croatia
[19] Univ Split, Split, Croatia
[20] Rudjer Boskovic Inst, Zagreb, Croatia
[21] Univ Cyprus, Nicosia, Cyprus
[22] NICPB, Tallinn, Estonia
[23] Univ Helsinki, Dept Phys, Helsinki, Finland
[24] Helsinki Inst Phys, Helsinki, Finland
[25] Lappeenranta Univ Technol, Lappeenranta, Finland
[26] CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, Annecy Le Vieux, France
[27] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France
[28] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France
[29] Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS,IN2P3, Strasbourg, France
[30] Univ Lyon 1, Univ Lyon, CNRS, Inst Phys Nucl Lyon,IN2P3, Villeurbanne, France
[31] Georgian Acad Sci, E Andronikashvili Inst Phys, GE-380060 Tbilisi, Georgia
[32] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany
[33] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[34] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany
[35] DESY, Hamburg, Germany
[36] Univ Hamburg, Hamburg, Germany
[37] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany
[38] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece
[39] Univ Athens, Athens, Greece
[40] Univ Ioannina, GR-45110 Ioannina, Greece
[41] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary
[42] Inst Nucl Res ATOMKI, Debrecen, Hungary
[43] Univ Debrecen, Debrecen, Hungary
[44] Panjab Univ, Chandigarh 160014, India
[45] Univ Delhi, Delhi 110007, India
[46] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
[47] Tata Inst Fundamental Res EHEP, Bombay, Maharashtra, India
[48] Tata Inst Fundamental Res HECR, Bombay, Maharashtra, India
[49] Inst Studies Theoret Phys & Math IPM, Tehran, Iran
[50] Univ Coll Dublin, Dublin 2, Ireland
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 02期
基金
巴西圣保罗研究基金会; 芬兰科学院; 美国国家科学基金会;
关键词
Hadron-Hadron Scattering; SQUARE-ROOT-S; PARTICLE MULTIPLICITY; CM ENERGIES; DIFFRACTION; DEPENDENCE;
D O I
10.1007/JHEP02(2010)041
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at root s = 0.9 and 2.36 TeV. The data were collected with the CMS detector during the LHC commissioning in December 2009. For non-single-diffractive interactions, the average charged-hadron transverse momentum is measured to be 0.46 +/- 0.01 (stat.) +/- 0.01 (syst.) GeV/c at 0.9 TeV and 0.50 +/- 0.01 (stat.) +/- 0.01 (syst.) GeV/c at 2.36 TeV, for pseudorapidities between -2.4 and +2.4. At these energies, the measured pseudorapidity densities in the central region, dN(ch)/d eta vertical bar(vertical bar eta vertical bar<0.5), are 3.48 +/- 0.02 (stat.) +/- 0.13 (syst.) and 4.47 +/- 0.04 (stat.) +/- 0.16 (syst.), respectively. The results at 0.9 TeV are in agreement with previous measurements and confirm the expectation of near equal hadron production in p<(p)over bar> and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.
引用
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页数:35
相关论文
共 33 条
[1]  
Aamodt K, 2010, EUR PHYS J C, V65, P111, DOI 10.1140/epjc/s10052-009-1227-4
[2]   PSEUDORAPIDITY DISTRIBUTIONS OF CHARGED-PARTICLES PRODUCED IN PP INTERACTIONS AT SQUARE-ROOT-S = 630 AND 1800 GEV [J].
ABE, F ;
AMIDEI, D ;
APOLLINARI, G ;
ASCOLI, G ;
ATAC, M ;
AUCHINCLOSS, P ;
BADEN, AR ;
BARBAROGALTIERI, A ;
BARNES, VE ;
BEDESCHI, F ;
BELFORTE, S ;
BELLETTINI, G ;
BELLINGER, J ;
BENSINGER, J ;
BERETVAS, A ;
BERGE, P ;
BERTOLUCCI, S ;
BHADRA, S ;
BINKLEY, M ;
BLAIR, R ;
BLOCKER, C ;
BOFILL, J ;
BOOTH, AW ;
BRANDENBURG, G ;
BROWN, D ;
BYON, A ;
BYRUM, KL ;
CAMPBELL, M ;
CAREY, R ;
CARITHERS, W ;
CARLSMITH, D ;
CARROLL, JT ;
CASHMORE, R ;
CERVELLI, F ;
CHADWICK, K ;
CHAPIN, T ;
CHIARELLI, G ;
CHINOWSKY, W ;
CIHANGIR, S ;
CLINE, D ;
CONNOR, D ;
CONTRERAS, M ;
COOPER, J ;
CORDELLI, M ;
CURATOLO, M ;
DAY, C ;
DELFABBRO, R ;
DELLORSO, M ;
DEMORTIER, L ;
DEVLIN, T .
PHYSICAL REVIEW D, 1990, 41 (07) :2330-2333
[3]   TRANSVERSE-MOMENTUM DISTRIBUTIONS OF CHARGED-PARTICLES PRODUCED IN PBARP INTERACTIONS AT SQUARE-ROOT-S = 630 AND 1800 GEV [J].
ABE, F ;
AMIDEI, D ;
APOLLINARI, G ;
ASCOLI, G ;
ATAC, M ;
AUCHINCLOSS, P ;
BADEN, AR ;
BARBAROGALTIERI, A ;
BARNES, VE ;
BEDESCHI, F ;
BELFORTE, S ;
BELLETTINI, G ;
BELLINGER, J ;
BENSINGER, J ;
BERETVAS, A ;
BERGE, P ;
BERTOLUCCI, S ;
BHADRA, S ;
BINKLEY, M ;
BLAIR, R ;
BLOCKER, C ;
BOFILL, J ;
BOOTH, AW ;
BRANDENBURG, G ;
BROWN, D ;
BYON, A ;
BYRUM, KL ;
CAMPBELL, M ;
CAREY, R ;
CARITHERS, W ;
CARLSMITH, D ;
CARROLL, JT ;
CASHMORE, R ;
CERVELLI, F ;
CHADWICK, K ;
CHAPIN, T ;
CHIARELLI, G ;
CHINOWSKY, W ;
CIHANGIR, S ;
CLINE, D ;
CONNOR, D ;
CONTRERAS, M ;
COOPER, J ;
CORDELLI, M ;
CURATOLO, M ;
DAY, C ;
DELFABBRO, R ;
DELLORSO, M ;
DEMORTIER, L ;
DEVLIN, T .
PHYSICAL REVIEW LETTERS, 1988, 61 (16) :1819-1822
[4]   Systematic measurements of identified particle spectra in pp, d plus Au, and Au plus Au collisions at the STAR detector [J].
Abelev, B. I. ;
Aggarwal, M. M. ;
Ahammed, Z. ;
Anderson, B. D. ;
Arkhipkin, D. ;
Averichev, G. S. ;
Bai, Y. ;
Balewski, J. ;
Barannikova, O. ;
Barnby, L. S. ;
Baudot, J. ;
Baumgart, S. ;
Beavis, D. R. ;
Bellwied, R. ;
Benedosso, F. ;
Betts, R. R. ;
Bhardwaj, S. ;
Bhasin, A. ;
Bhati, A. K. ;
Bichsel, H. ;
Bielcik, J. ;
Bielcikova, J. ;
Biritz, B. ;
Bland, L. C. ;
Bombara, M. ;
Bonner, B. E. ;
Botje, M. ;
Bouchet, J. ;
Braidot, E. ;
Brandin, A. V. ;
Bruna, E. ;
Bueltmann, S. ;
Burton, T. P. ;
Bystersky, M. ;
Cai, X. Z. ;
Caines, H. ;
Sanchez, M. Calderson de la Barca ;
Callner, J. ;
Catu, O. ;
Cebra, D. ;
Cendejas, R. ;
Cervantes, M. C. ;
Chajecki, Z. ;
Chaloupka, P. ;
Chattopadhyay, S. ;
Chen, H. F. ;
Chen, J. H. ;
Chen, J. Y. ;
Cheng, J. ;
Cherney, M. .
PHYSICAL REVIEW C, 2009, 79 (03)
[5]   GEANT4-a simulation toolkit [J].
Agostinelli, S ;
Allison, J ;
Amako, K ;
Apostolakis, J ;
Araujo, H ;
Arce, P ;
Asai, M ;
Axen, D ;
Banerjee, S ;
Barrand, G ;
Behner, F ;
Bellagamba, L ;
Boudreau, J ;
Broglia, L ;
Brunengo, A ;
Burkhardt, H ;
Chauvie, S ;
Chuma, J ;
Chytracek, R ;
Cooperman, G ;
Cosmo, G ;
Degtyarenko, P ;
Dell'Acqua, A ;
Depaola, G ;
Dietrich, D ;
Enami, R ;
Feliciello, A ;
Ferguson, C ;
Fesefeldt, H ;
Folger, G ;
Foppiano, F ;
Forti, A ;
Garelli, S ;
Giani, S ;
Giannitrapani, R ;
Gibin, D ;
Cadenas, JJG ;
González, I ;
Abril, GG ;
Greeniaus, G ;
Greiner, W ;
Grichine, V ;
Grossheim, A ;
Guatelli, S ;
Gumplinger, P ;
Hamatsu, R ;
Hashimoto, K ;
Hasui, H ;
Heikkinen, A ;
Howard, A .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 506 (03) :250-303
[6]   A STUDY OF THE GENERAL-CHARACTERISTICS OF PROTON ANTIPROTON COLLISIONS AT SQUARE-ROOT=0.2 TO 0.9 TEV [J].
ALBAJAR, C ;
ALBROW, MG ;
ALLKOFER, OC ;
ANDRIEU, B ;
ANKOVIAK, K ;
APSIMON, R ;
ASTBURY, A ;
AUBERT, B ;
BACCI, C ;
BACON, T ;
BAINS, N ;
BAUER, G ;
BEINGESSNER, S ;
BETTINI, A ;
BEZAGUET, A ;
BIDDULPH, P ;
BOHN, H ;
BOHRER, A ;
BONINO, R ;
BOS, K ;
BOTLO, M ;
BUSCHBECK, B ;
BUSETTO, G ;
CANER, A ;
CASOLI, P ;
CAVANNA, F ;
CENNINI, P ;
CENTRO, S ;
CERADINI, F ;
CHARLTON, DG ;
CIAPETTI, G ;
CITTOLIN, S ;
CLAYTON, E ;
CLINE, D ;
COLAS, J ;
COLAS, P ;
CONTE, R ;
COUGHLAN, JA ;
COX, G ;
DAU, D ;
DEBRION, JP ;
DEGIORGI, M ;
DELLANEGRA, M ;
DEMOULIN, M ;
DENEGRI, D ;
DIBON, H ;
DICIACCIO, A ;
HEDO, FJD ;
DOBRZYNSKI, L ;
DORENBOSCH, J .
NUCLEAR PHYSICS B, 1990, 335 (02) :261-287
[7]   MULTIPLICITY DEPENDENCE OF THE TRANSVERSE-MOMENTUM SPECTRUM FOR CENTRALLY PRODUCED HADRONS IN ANTIPROTON-PROTON COLLISIONS AT SQUARE-ROOT-S=1.8 TEV [J].
ALEXOPOULOS, T ;
ALLEN, C ;
ANDERSON, EW ;
ARETI, H ;
BANERJEE, S ;
BEERY, PD ;
BISWAS, NN ;
BUJAK, A ;
CARMONY, DD ;
CARTER, T ;
COLE, P ;
CHOI, Y ;
DEBONTE, R ;
ERWIN, A ;
FINDEISEN, C ;
GOSHAW, AT ;
GUTAY, LJ ;
HIRSCH, AS ;
HOJVAT, C ;
KENNEY, VP ;
KOLTICK, D ;
LINDSEY, CS ;
LOSECCO, JM ;
MCMAHON, T ;
MCMANUS, AP ;
MORGAN, N ;
NELSON, K ;
OH, SH ;
PIEKARZ, J ;
PORILE, NT ;
REEVES, D ;
SCHARENBERG, RP ;
STRINGFELLOW, BC ;
STAMPKE, SR ;
THOMPSON, M ;
TURKOT, F ;
WALKER, WD ;
WANG, CH ;
WESSON, DK .
PHYSICAL REVIEW LETTERS, 1988, 60 (16) :1622-1625
[8]  
ALNER GJ, 1986, Z PHYS C PART FIELDS, V33, P1, DOI 10.1007/BF01410446
[9]  
[Anonymous], HEPPH9803437
[10]  
[Anonymous], 2006001 CERNLHCC CMS