Measurement of prompt hadron production ratios in pp collisions at √s=0.9 and 7 TeV

被引：0

作者：

Aaij, R. ^{[1
]}

Abellan Beteta, C. ^{[35
,70
,71
]}

Adametz, A. ^{[12
]}

Adeva, B. ^{[36
]}

Adinolfi, M. ^{[44
]}

Adrover, C. ^{[7
]}

Affolder, A. ^{[50
]}

Ajaltouni, Z. ^{[6
]}

Albrecht, J. ^{[37
]}

Alessio, F. ^{[37
]}

Alexander, M. ^{[49
]}

Ali, S. ^{[1
]}

Alkhazov, G. ^{[28
]}

Alvarez Cartelle, P. ^{[36
]}

Alves, A. A., Jr. ^{[23
]}

Amato, S. ^{[3
]}

Amhis, Y. ^{[38
]}

Anderson, J. ^{[39
]}

Appleby, R. B. ^{[52
]}

Aquines Gutierrez, O. ^{[11
]}

Archilli, F. ^{[19
,37
]}

Artamonov, A. ^{[34
]}

Artuso, M. ^{[54
]}

Aslanides, E. ^{[7
]}

Auriemma, G. ^{[23
,69
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[46
]}

Balagura, V. ^{[29
]}

Baldini, W. ^{[17
]}

Barlow, R. J. ^{[52
]}

Barschel, C. ^{[37
]}

Barsuk, S. ^{[8
]}

Barter, W. ^{[45
]}

Bates, A. ^{[49
]}

Bauer, C. ^{[11
]}

Bauer, Th. ^{[1
]}

Bay, A. ^{[38
]}

Beddow, J. ^{[49
]}

Bediaga, I. ^{[2
]}

Belogurov, S. ^{[29
]}

Belous, K. ^{[34
]}

Belyaev, I. ^{[29
]}

Ben-Haim, E. ^{[9
]}

Benayoun, M. ^{[9
]}

Bencivenni, G. ^{[19
]}

Benson, S. ^{[48
]}

Benton, J. ^{[44
]}

Berezhnoy, A. ^{[30
]}

Bernet, R. ^{[39
]}

Bettler, M. -O. ^{[45
]}

机构：

[1] NIKHEF H, Natl Inst Subat Phys, NL-1009 DB Amsterdam, Netherlands

[2] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[3] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil

[4] Tsinghua Univ, Ctr High Energy Phys, Beijing 100084, Peoples R China

[5] Univ Savoie, CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[6] Univ Blaise Pascal, Clermont Univ, CNRS, IN2P3,LPC, Clermont Ferrand, France

[7] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France

[8] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France

[9] Univ Paris 06, CNRS, Univ Paris Diderot, LPNHE,IN2P3, Paris, France

[10] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[11] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[12] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany

[13] Univ Coll Dublin, Sch Phys, Dublin 2, Ireland

[14] Sez INFN Bari, Bari, Italy

[15] Sez INFN Bologna, Bologna, Italy

[16] Sez INFN Cagliari, Cagliari, Italy

[17] Sez INFN Ferrara, Ferrara, Italy

[18] Sez INFN Firenze, Florence, Italy

[19] Lab Nazl INFN Frascati, Frascati, Italy

[20] Sez INFN Genova, Genoa, Italy

[21] Sez INFN Milano Bicocca, Milan, Italy

[22] Sez INFN Roma Tor Vergata, Rome, Italy

[23] Sez INFN Roma La Sapienza, Rome, Italy

[24] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[25] AGH Univ Sci & Technol, Krakow, Poland

[26] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[27] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[28] PNPI, Gatchina, Russia

[29] Inst Theoret & Expt Phys, Moscow 117259, Russia

[30] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia

[31] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia

[32] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia

[33] Novosibirsk State Univ, Novosibirsk 630090, Russia

[34] Inst High Energy Phys, Protvino, Russia

[35] Univ Barcelona, Barcelona, Spain

[36] Univ Santiago de Compostela, Santiago De Compostela, Spain

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

[38] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[39] Univ Zurich, Inst Phys, Zurich, Switzerland

[40] Vrije Univ Amsterdam, Amsterdam, Netherlands

[41] NSC KIPT, Kharkov, Ukraine

[42] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine

[43] Univ Birmingham, Birmingham, W Midlands, England

[44] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[45] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[46] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[47] STFC Rutherford Appleton Lab, Didcot, Oxon, England

[48] Univ Edinburgh, Sch Phys & Astron, Edinburgh, Midlothian, Scotland

[49] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland

[50] Univ Liverpool, Oliver Lodge Lab, Liverpool L69 3BX, Merseyside, England

来源：

EUROPEAN PHYSICAL JOURNAL C | 2012年 / 72卷 / 10期

关键词：

BARYON; ENERGIES; DECAY; MODEL; TOOL;

D O I：

10.1140/epjc/s10052-012-2168-x

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：

The charged-particle production ratios (p) over bar /p, K-/K+, pi(-)/pi(+), (p+(p) over bar)/(pi(+)/pi(-)), (K++K-)/(pi(+)/pi(-)) and (p+(p) over bar)/(K++K-) are measured with the LHCb detector using 0.3 nb(-1) of pp collisions delivered by the LHC at root s = 0.9 TeV and 1.8 nb(-1) at root s = 7 TeV. The measurements are performed as a function of transverse momentum p(T) and pseudorapidity eta. The production ratios are compared to the predictions of several Monte Carlo generator settings, none of which are able to describe adequately all observables. The ratio (p) over bar /p is also considered as a function of rapidity loss, Delta y equivalent to y(beam) - y, and is used to constrain models of baryon transport.

引用

页数：19

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