Particle production as a function of charged-particle flattenicity in pp collisions at √sp=13TeV

被引:0
作者
Acharya, S. [141 ]
Adamova, D. [97 ]
Agarwal, A. [149 ]
Rinella, G. Aglieri [43 ]
Aglietta, L. [28 ,29 ]
Agnello, M. [38 ,39 ]
Agrawal, N. [30 ,31 ]
Ahammed, Z. [149 ]
Ahmad, S. [17 ]
Ahn, S. U. [82 ]
Ahuja, I. [48 ]
Akindinov, A. [155 ]
Akishina, V. [49 ]
Al-Turany, M. [110 ,111 ]
Aleksandrov, D. [155 ]
Alessandro, B. [67 ]
Alfanda, H. M. [7 ]
Alfaro Molina, R. [78 ]
Ali, B. [17 ]
Alici, A. [30 ,31 ]
Alizadehvandchali, N. [130 ]
Alkin, A. [118 ]
Alme, J. [22 ]
Alocco, G. [29 ,63 ]
Alt, T. [75 ]
Altamura, A. R. [61 ]
Altsybeev, I. [107 ]
Alvarado, J. R. [55 ]
Alvarez, C. O. R. [55 ]
Anaam, M. N. [7 ]
Andrei, C. [56 ]
Andreou, N. [129 ]
Andronic, A. [140 ]
Andronov, E. [155 ]
Anguelov, V. [106 ]
Antinori, F. [65 ]
Antonioli, P. [62 ]
Apadula, N. [85 ]
Aphecetche, L. [117 ]
Appelshauser, H. [75 ]
Arata, C. [84 ]
Arcelli, S. [30 ,31 ]
Arnaldi, R. [67 ]
Arneiro, J. G. M. C. A. [124 ]
Arsene, I. C. [21 ]
Arslandok, M. [152 ]
Augustinus, A. [43 ]
Averbeck, R. [110 ,111 ]
Averyanov, D. [155 ]
Azmi, M. D. [17 ]
机构
[1] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia
[2] AGH Univ Krakow, Krakow, Poland
[3] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine
[4] Bose Inst, Dept Phys, Kolkata, India
[5] Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India
[6] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA USA
[7] Cent China Normal Univ, Wuhan, Peoples R China
[8] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba
[9] Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico
[10] Ctr Invest & Estudios Avanzados CINVESTAV, Merida, Mexico
[11] Chicago State Univ, Chicago, IL USA
[12] China Inst Atom Energy, Beijing, Peoples R China
[13] China Univ Geosci, Wuhan, Peoples R China
[14] Chungbuk Natl Univ, Cheongju, South Korea
[15] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[16] Creighton Univ, Omaha, NE USA
[17] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India
[18] Pusan Natl Univ, Dept Phys, Pusan, South Korea
[19] Sejong Univ, Dept Phys, Seoul, South Korea
[20] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA
[21] Univ Oslo, Dept Phys, Oslo, Norway
[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[23] Univ Pavia, Dipartimento Fis, Pavia, Italy
[24] Univ Cagliari, Dipartimento Fis, Cagliari, Italy
[25] Sezione Ist Nazl Fis Nucl, Cagliari, Italy
[26] Univ Trieste, Dipartimento Fis, Trieste, Italy
[27] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[28] Univ Turin, Dipartimento Fis, Turin, Italy
[29] Sezione Ist Nazl Fis Nucl, Turin, Italy
[30] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[31] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[32] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[33] Sezione Ist Nazl Fis Nucl, Catania, Italy
[34] Univ Padua, Dipartimento Fis Astron, Padua, Italy
[35] Sezione Ist Nazl Fis Nucl, Padua, Italy
[36] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy
[37] Grp Collegato INFN, Salerno, Italy
[38] Politecn Torino, Dipartimento DISAT, Turin, Italy
[39] Sezione Ist Nazl Fis Nucl, Turin, Italy
[40] Univ Messina, Dipartimento Sci MIFT, Messina, Italy
[41] Dipartimento Interateneo Fis M Merlin, Bari, Italy
[42] Sezione Ist Nazl Fis Nucl, Bari, Italy
[43] European Org Nucl Res CERN, Geneva, Switzerland
[44] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[45] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway
[46] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic
[47] Univ Sofia, Fac Phys, Sofia, Bulgaria
[48] Safarik Univ, Fac Sci, Kosice, Slovakia
[49] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany
[50] Fudan Univ, Shanghai, Peoples R China
基金
中国国家自然科学基金; 美国国家科学基金会; 奥地利科学基金会; 欧盟地平线“2020”; 英国科学技术设施理事会; 日本学术振兴会; 美国能源部; 欧洲研究理事会; 芬兰科学院; 新加坡国家研究基金会; 瑞典研究理事会; 巴西圣保罗研究基金会;
关键词
PROTON-PROTON COLLISIONS; PB-PB COLLISIONS; MULTIPLICITY DEPENDENCE; LONG-RANGE; TRANSVERSE SPHEROCITY; ANGULAR-CORRELATIONS; HADRON-PRODUCTION; CROSS-SECTIONS; JET PRODUCTION; NEAR-SIDE;
D O I
暂无
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
This paper reports the first measurement of the transverse momentum (p(T)) spectra of primary charged pions, kaons, (anti)protons, and unidentified particles as a function of the charged-particle flattenicity in pp collisions at root s = 13 TeV. Flattenicity is a novel event shape observable that is measured in the pseudorapidity intervals covered by the V0 detector, 2.8 < eta < 5.1 and -3.7 < eta < -1.7. According to QCD-inspired phenomenological models, it shows sensitivity to multiparton interactions and is less affected by biases toward larger pT due to local multiplicity fluctuations in the V0 acceptance than multiplicity. The analysis is performed in minimum-bias (MB) as well as in high-multiplicity events up to p(T) = 20 GeV/c. The event selection requires at least one charged particle produced in the pseudorapidity interval |eta| < 1. The measured p(T) distributions, average p(T), kaon-to-pion and proton-to-pion particle ratios, presented in this paper, are compared to model calculations using PYTHIA 8 based on color strings and EPOS LHC. The modification of the p(T)-spectral shapes in low-flattenicity events that have large event activity with respect to those measured in MB events develops a pronounced peak at intermediate p(T) ( 2 < p(T) < 8 GeV/c), and approaches the vicinity of unity at higher p(T). The results are qualitatively described by PYTHIA, and they show different behavior than those measured as a function of chargedparticle multiplicity based on the V0M estimator.
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共 74 条
[1]   Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s=5.02 and 13 TeV and p plus Pb collisions at √sNN=5.02 TeV with the ATLAS detector [J].
Aaboud, M. ;
Aad, G. ;
Abbott, B. ;
Abdallah, J. ;
Abdinov, O. ;
Abeloos, B. ;
AbouZeid, O. S. ;
Abraham, N. L. ;
Abramowicz, H. ;
Abreu, H. ;
Abreu, R. ;
Abulaiti, Y. ;
Acharya, B. S. ;
Adachi, S. ;
Adamczyk, L. ;
Adams, D. L. ;
Adelman, J. ;
Adomeit, S. ;
Adye, T. ;
Affolder, A. A. ;
Agatonovic-Jovin, T. ;
Aguilar-Saavedra, J. A. ;
Ahlen, S. P. ;
Ahmadov, F. ;
Aielli, G. ;
Akerstedt, H. ;
Akesson, T. P. A. ;
Akimov, A. V. ;
Alberghi, G. L. ;
Albert, J. ;
Albrand, S. ;
Alconada Verzini, M. J. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
Alexa, C. ;
Alexander, G. ;
Alexopoulos, T. ;
Alhroob, M. ;
Ali, B. ;
Aliev, M. ;
Alimonti, G. ;
Alison, J. ;
Alkire, S. P. ;
Allbrooke, B. M. M. ;
Allen, B. W. ;
Allport, P. P. ;
Aloisio, A. ;
Alonso, A. ;
Alonso, F. ;
Alpigiani, C. .
PHYSICAL REVIEW C, 2017, 96 (02)
[2]   Observation of Long-Range Elliptic Azimuthal Anisotropies in √s=13 and 2.76 TeV pp Collisions with the ATLAS Detector [J].
Aad, G. ;
Abbott, B. ;
Abdallah, J. ;
Abdinov, O. ;
Aben, R. ;
Abolins, M. ;
AbouZeid, O. S. ;
Abramowicz, H. ;
Abreu, H. ;
Abreu, R. ;
Abulaiti, Y. ;
Acharya, B. S. ;
Adamczyk, L. ;
Adams, D. L. ;
Adelman, J. ;
Adomeit, S. ;
Adye, T. ;
Affolder, A. A. ;
Agatonovic-Jovin, T. ;
Agricola, J. ;
Aguilar-Saavedra, J. A. ;
Ahlen, S. P. ;
Ahmadov, F. ;
Aielli, G. ;
Akerstedt, H. ;
Akesson, T. P. ;
Akimov, A. V. ;
Alberghi, G. L. ;
Albert, J. ;
Albrand, S. ;
Alconada Verzini, M. J. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
Alexa, C. ;
Alexander, G. ;
Alexopoulos, T. ;
Alhroob, M. ;
Alimonti, G. ;
Alio, L. ;
Alison, J. ;
Alkire, S. P. ;
Allbrooke, B. M. M. ;
Allport, P. P. ;
Aloisio, A. ;
Alonso, A. ;
Alonso, F. ;
Alpigiani, C. ;
Altheimer, A. ;
Alvarez Gonzalez, B. ;
Alvarez Piqueras, D. .
PHYSICAL REVIEW LETTERS, 2016, 116 (17)
[3]  
Aaij R., 2013, Phys. Lett. B
[4]   Alignment of the ALICE Inner Tracking System with cosmic-ray tracks [J].
Aamodt, K. ;
Abel, N. ;
Abeysekara, U. ;
Abrahantes Quintana, A. ;
Adamova, D. ;
Aggarwal, M. ;
Rinella, G. Aglieri ;
Agocs, A. G. ;
Salazar, S. Aguilar ;
Ahammed, Z. ;
Ahmad, A. ;
Ahmad, N. ;
Ahn, S. U. ;
Akimoto, R. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alfaro Molina, R. ;
Alici, A. ;
Almaraz Avina, E. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Andrei, C. ;
Andronic, A. ;
Anelli, G. ;
Angelov, V. ;
Anson, C. ;
Anticic, T. ;
Antinori, F. ;
Antinori, S. ;
Antipin, K. ;
Antonczyk, D. ;
Antonioli, P. ;
Anzo, A. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Arcelli, S. ;
Arceo, R. ;
Arend, A. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Asryan, A. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. ;
Aysto, J. .
JOURNAL OF INSTRUMENTATION, 2010, 5
[5]   The ALICE experiment at the CERN LHC [J].
Aamodt, K. ;
Quintana, A. Abrahantes ;
Achenbach, R. ;
Acounis, S. ;
Adamova, D. ;
Adler, C. ;
Aggarwal, M. ;
Agnese, F. ;
Rinella, G. Aglieri ;
Ahammed, Z. ;
Ahmad, A. ;
Ahmad, N. ;
Ahmad, S. ;
Akindinov, A. ;
Akishin, P. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alfaro, R. ;
Alfarone, G. ;
Alici, A. ;
Alme, J. ;
Alt, T. ;
Altinpinar, S. ;
Amend, W. ;
Andrei, C. ;
Andres, Y. ;
Andronic, A. ;
Anelli, G. ;
Anfreville, M. ;
Angelov, V. ;
Anzo, A. ;
Anson, C. ;
Anticic, T. ;
Antonenko, V. ;
Antonczyk, D. ;
Antinori, F. ;
Antinori, S. ;
Antonioli, P. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Aprodu, V. ;
Arba, M. ;
Arcelli, S. ;
Argentieri, A. ;
Armesto, N. ;
Arnaldi, R. ;
Arefiev, A. ;
Arsene, I. ;
Asryan, A. ;
Augustinus, A. .
JOURNAL OF INSTRUMENTATION, 2008, 3
[6]   Production of charged pions, kaons and protons at large transverse momenta in pp and Pb-Pb collisions at √sNN=2.76 TeV [J].
Abelev, B. ;
Adam, J. ;
Adamova, D. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agnello, M. ;
Agostinelli, A. ;
Agrawal, N. ;
Ahammed, Z. ;
Ahmad, N. ;
Masoodi, A. Ahmad ;
Ahmed, I. ;
Ahn, S. U. ;
Ahn, S. A. ;
Aimo, I. ;
Aiola, S. ;
Ajaz, M. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alexandre, D. ;
Alici, A. ;
Alkin, A. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Alves Garcia Prado, C. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anielski, J. ;
Anticic, T. ;
Antinori, F. ;
Antonioli, P. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Arbor, N. ;
Arcelli, S. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Arslandok, M. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. ;
Azmi, M. D. ;
Bach, M. .
PHYSICS LETTERS B, 2014, 736 :196-207
[7]   Multiplicity dependence of pion, kaon, proton and lambda production in p-Pb collisions at √sNN=5.02 TeV [J].
Abelev, B. ;
Adam, J. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agnello, M. ;
Agocs, A. G. ;
Agostinelli, A. ;
Ahammed, Y. Z. ;
Ahmad, N. ;
Masoodi, A. Ahmad ;
Ahmed, I. ;
Ahn, S. U. ;
Ahn, S. A. ;
Aimo, I. ;
Aiola, S. ;
Ajaz, M. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alexandre, D. ;
Alici, A. ;
Alkin, A. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Alves Garcia Prado, C. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anielski, J. ;
Anticic, T. ;
Antinori, F. ;
Antonioli, P. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Arbor, N. ;
Arcelli, S. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Arslandok, M. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. ;
Azmi, M. D. .
PHYSICS LETTERS B, 2014, 728 :25-38
[8]   Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC [J].
Abelev, B. ;
Adam, J. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agnello, M. ;
Agocs, A. G. ;
Agostinelli, A. ;
Ahammed, Z. ;
Masoodi, A. Ahmad ;
Ahmad, N. ;
Ahmed, I. ;
Ahn, S. A. ;
Ahn, S. U. ;
Aimo, I. ;
Ajaz, M. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alexandre, D. ;
Alici, A. ;
Alkin, A. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anielski, J. ;
Anson, C. ;
Anticic, T. ;
Antinori, F. ;
Antonioli, P. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Arbor, N. ;
Arcelli, S. ;
Arend, A. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Arslandok, M. ;
Asryan, A. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. .
PHYSICS LETTERS B, 2013, 727 (4-5) :371-380
[9]   Long-range angular correlations of π, K and p in p-Pb collisions at √sNN=5.02 TeV [J].
Abelev, B. ;
Adam, J. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agnello, M. ;
Agocs, A. G. ;
Agostinelli, A. ;
Ahammed, Z. ;
Ahmad, N. ;
Masoodi, A. Ahmad ;
Ahmed, I. ;
Ahn, S. A. ;
Ahn, S. U. ;
Aimo, I. ;
Aiola, S. ;
Ajaz, M. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alexandre, D. ;
Alici, A. ;
Alkin, A. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Prado, C. Alves Garcia ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anielski, J. ;
Antitle, T. ;
Antinori, F. ;
Antonioli, P. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Arbor, N. ;
Arcelli, S. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Arslandok, M. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. ;
Aeystoe, J. .
PHYSICS LETTERS B, 2013, 726 (1-3) :164-177
[10]   Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC [J].
Abelev, B. ;
Adam, J. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agnello, M. ;
Agocs, A. G. ;
Agostinelli, A. ;
Ahammed, Z. ;
Masoodi, A. Ahmad ;
Ahmad, N. ;
Ahmed, I. ;
Ahn, S. U. ;
Ahn, S. A. ;
Aimo, I. ;
Ajaz, M. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alexandre, D. ;
Alici, A. ;
Alkin, A. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anielski, J. ;
Anson, C. ;
Anticic, T. ;
Antinori, F. ;
Antonioli, P. ;
Aphecetche, L. ;
Appelshaeuser, H. ;
Arbor, N. ;
Arcelli, S. ;
Arend, A. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Arslandok, M. ;
Asryan, A. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. .
JOURNAL OF HIGH ENERGY PHYSICS, 2013, (09)