Measurement of inelastic, single- and double-diffraction cross sections in proton-proton collisions at the LHC with ALICE

被引：177

作者：

Abelev, B. ^{[84
]}

Adam, J. ^{[48
]}

Adamova, D. ^{[89
,90
]}

Adare, A. M. ^{[128
]}

Aggarwal, M. M. ^{[94
]}

Rinella, G. Aglieri ^{[44
]}

Agocs, A. G. ^{[76
]}

Agostinelli, A. ^{[23
,24
,34
]}

Aguilar Salazar, S. ^{[72
]}

Ahammed, Z. ^{[124
]}

Masoodi, A. Ahmad ^{[18
]}

Ahmad, N. ^{[18
]}

Ahn, S. A. ^{[78
]}

Ahn, S. U. ^{[51
]}

Akindinov, A. ^{[62
]}

Aleksandrov, D. ^{[106
]}

Alessandro, B. ^{[28
]}

Alfaro Molina, R. ^{[72
]}

Alici, A. ^{[12
,13
,24
]}

Alkin, A. ^{[3
]}

Almaraz Avina, E. ^{[72
]}

Alme, J. ^{[46
]}

Alt, T. ^{[50
]}

Altini, V. ^{[41
,42
]}

Altinpinar, S. ^{[19
]}

Altsybeev, I. ^{[125
]}

Andrei, C. ^{[86
]}

Andronic, A. ^{[102
,103
]}

Anguelov, V. ^{[99
]}

Anielski, J. ^{[70
]}

Anson, C. ^{[20
]}

Anticic, T. ^{[104
]}

Antinori, F. ^{[36
]}

Antonioli, P. ^{[24
]}

Aphecetche, L. ^{[111
]}

Appelshaeuser, H. ^{[68
]}

Arbor, N. ^{[80
]}

Arcelli, S. ^{[23
,24
]}

Arend, A. ^{[68
]}

Armesto, N. ^{[16
,17
]}

Arnaldi, R. ^{[28
]}

Aronsson, T. ^{[128
]}

Arsene, I. C. ^{[102
,103
]}

Arslandok, M. ^{[68
]}

Asryan, A. ^{[125
]}

Augustinus, A. ^{[44
]}

Averbeck, R. ^{[102
,103
]}

Awes, T. C. ^{[91
]}

Aysto, J. ^{[52
,53
]}

Azmi, M. D. ^{[18
,96
]}

机构：

[1] CERN, CH-1211 Geneva 23, Switzerland

[2] Univ Autonoma Puebla, Puebla 72570, Mexico

[3] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[4] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[5] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA

[6] Cent China Normal Univ, Wuhan, Peoples R China

[7] IN2P3, Ctr Calcul, Villeurbanne, France

[8] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[9] Ctr Invest Energet Medioambientales & Tecnol CIEM, Madrid, Spain

[10] Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico

[11] Ctr Invest & Estudios Avanzados CINVESTAV, Merida, Mexico

[12] Ctr Fermi Ctr Studi & Ric, Rome, Italy

[13] Museo Stor Fis Enrico Fermi, Rome, Italy

[14] Chicago State Univ, Chicago, IL USA

[15] IRFU, Commissariat Energie Atom, Saclay, France

[16] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela, Spain

[17] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

[18] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

[19] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[20] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[21] Sejong Univ, Dept Phys, Seoul, South Korea

[22] Univ Oslo, Dept Phys, Oslo, Norway

[23] Univ Bologna, Dipartimento Fis, Bologna, Italy

[24] Sezione Ist Nazl Fis Nucl, Bologna, Italy

[25] Univ Trieste, Dipartimento Fis, Trieste, Italy

[26] Sezione Ist Nazl Fis Nucl, Trieste, Italy

[27] Univ Turin, Dipartimento Fis, Turin, Italy

[28] Sezione Ist Nazl Fis Nucl, Turin, Italy

[29] Univ Cagliari, Dipartimento Fis, Cagliari, Italy

[30] Sezione Ist Nazl Fis Nucl, Cagliari, Italy

[31] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[32] Sezione Ist Nazl Fis Nucl, Rome, Italy

[33] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[34] Sezione Ist Nazl Fis Nucl, Catania, Italy

[35] Univ Padua, Dipartimento Fis, Padua, Italy

[36] Sezione Ist Nazl Fis Nucl, Padua, Italy

[37] Univ Salerno, Dipartimento Fis ER Caianiello, I-84100 Salerno, Italy

[38] Ist Nazl Fis Nucl, Grp Collegato, Salerno, Italy

[39] Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, Alessandria, Italy

[40] Ist Nazl Fis Nucl, Grp Collegato, Alessandria, Italy

[41] Dipartimento Interateneo Fis M Merlin, Bari, Italy

[42] Sezione Ist Nazl Fis Nucl, Bari, Italy

[43] Lund Univ, Div Expt High Energy Phys, Lund, Sweden

[44] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland

[45] Fachhsch Koln, Cologne, Germany

[46] Bergen Univ Coll, Fac Engn, Bergen, Norway

[47] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[48] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague, Czech Republic

[49] Safarik Univ, Fac Sci, Kosice, Slovakia

[50] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60054 Frankfurt, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2013年 / 73卷 / 06期

基金：

芬兰科学院; 中国国家自然科学基金; 瑞典研究理事会; 美国国家科学基金会; 巴西圣保罗研究基金会; 新加坡国家研究基金会; 美国能源部; 英国科学技术设施理事会; 欧洲研究理事会;

关键词：

ELASTIC-SCATTERING; (P)OVER-BAR-P COLLISIONS; DISSOCIATION; ENERGY; PHYSICS; HARD;

D O I：

10.1140/epjc/s10052-013-2456-0

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 cross sections of inelastic and diffractive processes in proton-proton collisions at LHC energies were carried out with the ALICE detector. The fractions of diffractive processes in inelastic collisions were determined from a study of gaps in charged particle pseudorapidity distributions: for single diffraction (diffractive mass M-X < 200 GeV/c(2)) sigma(SD)/sigma(INEL) = 0.21 +/- 0.03, 0.20(-0.08)(+0.07,) and 0.20(-0.07)(+0.04), respectively at centre-of-mass energies root s = 0.9, 2.76, and 7 TeV; for double diffraction (for a pseudorapidity gap Delta eta > 3) sigma(DD)/sigma(INEL) = 0.11 +/- 0.03, 0.12 +/- 0.05, and 0.12(-0.04)(+0.05), respectively at root s = 0.9, 2.76, and 7 TeV. To measure the inelastic cross section, beam properties were determined with van der Meer scans, and, using a simulation of diffraction adjusted to data, the following values were obtained: sigma(INEL) = 62.8(-4.0)(+2.4)(model) +/- 1.2(lumi) mb at root s = 2.76 TeV and 73.2(-4.6)(+2.0)(model) +/- 2.6(lumi) mb at root s = 7 TeV. The single- and double-diffractive cross sections were calculated combining relative rates of diffraction with inelastic cross sections. The results are compared to previous measurements at proton-antiproton and proton-proton colliders at lower energies, to measurements by other experiments at the LHC, and to theoretical models.

引用

页码：1 / 20

页数：20

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