Emergence of Long-Range Angular Correlations in Low-Multiplicity Proton-Proton Collisions

被引:0
作者
Acharya, S. [141 ]
Adamova, D. [97 ]
Rinella, G. Aglieri [44 ]
Aglietta, L. [29 ,30 ]
Agnello, M. [39 ,40 ]
Agrawal, N. [63 ]
Ahammed, Z. [149 ]
Ahmad, S. [18 ]
Ahn, S. U. [83 ]
Ahuja, I. [49 ]
Akindinov, A. [155 ]
Al-Turany, M. [110 ,111 ]
Aleksandrov, D. [155 ]
Alessandro, B. [68 ]
Alfanda, H. M. [7 ]
Alfaro Molina, R. [79 ]
Ali, B. [18 ]
Alici, A. [31 ,32 ]
Alizadehvandchali, N. [130 ]
Alkin, A. [44 ]
Alme, J. [23 ]
Alocco, G. [64 ]
Alt, T. [76 ]
Altamura, A. R. [62 ]
Altsybeev, I. [107 ]
Alvarado, J. R. [56 ]
Anaam, M. N. [7 ]
Andrei, C. [57 ]
Andreou, N. [129 ]
Andronic, A. [140 ]
Andronov, E. [155 ]
Anguelov, V. [106 ]
Antinori, F. [66 ]
Antonioli, P. [63 ]
Apadula, N. [85 ]
Aphecetche, L. [117 ]
Appelshauser, H. [76 ]
Arata, C. [84 ]
Arcelli, S. [31 ,32 ]
Aresti, M. [25 ,26 ]
Arnaldi, R. [68 ]
Arneiro, J. G. M. C. A. [124 ]
Arsene, I. C. [22 ]
Arslandok, M. [152 ]
Augustinus, A. [44 ]
Averbeck, R. [110 ,111 ]
Azmi, M. D. [18 ]
Baba, H. [138 ]
Badala, A. [65 ]
Bae, J. [118 ]
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 93407 USA
[7] Cent China Normal Univ, Wuhan, Peoples R China
[8] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba
[9] Ctr Invest & Estud Avanzados CINVESTAV, Mexico City, DF, Mexico
[10] Ctr Invest & Estud 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] COMSATS Univ Islamabad, Islamabad, Pakistan
[17] Creighton Univ, Omaha, NE 68178 USA
[18] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India
[19] Pusan Natl Univ, Dept Phys, Pusan, South Korea
[20] Sejong Univ, Dept Phys, Seoul, South Korea
[21] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[22] Univ Oslo, Dept Phys, Oslo, Norway
[23] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[24] Univ Pavia, Dipartimento Fis, Pavia, Italy
[25] Univ Cagliari, Dipartimento Fis, Cagliari, Italy
[26] Sezione Ist Nazl Fis Nucl, Cagliari, Italy
[27] Univ Trieste, Dipartimento Fis, Trieste, Italy
[28] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[29] Univ Turin, Dipartimento Fis, Turin, Italy
[30] Sezione Ist Nazl Fis Nucl, Turin, Italy
[31] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[32] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[33] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[34] Sezione Ist Nazl Fis Nucl, Catania, Italy
[35] Univ Padua, Dipartimento Fis & Astron, Padua, Italy
[36] Sezione Ist Nazl Fis Nucl, Padua, Italy
[37] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy
[38] Grp Collegato INFN, Salerno, Italy
[39] Politecn Torino, Dipartimento DISAT, Turin, Italy
[40] Sezione Ist Nazl Fis Nucl, Turin, Italy
[41] Univ Messina, Dipartimento Sci MIFT, Messina, Italy
[42] Dipartimento Interateneo Fis M Merlin, Bari, Italy
[43] Sezione Ist Nazl Fis Nucl, Bari, Italy
[44] European Org Nucl Res CERN, Geneva, Switzerland
[45] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[46] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway
[47] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic
[48] Sofia Univ, Fac Phys, Sofia, Bulgaria
[49] Safarik Univ, Fac Sci, Kosice, Slovakia
[50] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany
基金
英国科学技术设施理事会; 美国能源部; 巴西圣保罗研究基金会; 新加坡国家研究基金会; 中国国家自然科学基金; 瑞典研究理事会; 欧洲研究理事会; 芬兰科学院; 美国国家科学基金会; 奥地利科学基金会; 日本学术振兴会;
关键词
QUARK-GLUON PLASMA; TRANSVERSE-MOMENTUM; LEAD COLLISIONS; PB COLLISIONS; SMALL SYSTEM; FLOW; COLLECTIVITY; PSEUDORAPIDITY; PERSPECTIVE;
D O I
10.1103/PhysRevLett.132.172302
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This Letter presents the measurement of near-side associated per-trigger yields, denoted ridge yields, from the analysis of angular correlations of charged hadrons in proton- proton collisions at root s=13 TeV. Long-range ridge yields are extracted for pairs of charged particles with a pseudorapidity difference of 1.4 < Delta eta < 1.8 and a transverse momentum of 1 < pr < 2 GeV/c, as a function of the charged-particle multiplicity measured at midrapidity. This Letter extends the measurements of the ridge yield to the low multiplicity region, where in hadronic collisions it is typically conjectured that a strongly interacting medium is unlikely to be formed. The precision of the new low multiplicity results allows for the first direct quantitative comparison with the results obtained in ethorne- collisions at root s=91 GeV and root s 183-209 GeV, where initial-state effects such as preequilibrium dynamics and collision geometry are not expected to play a role. In the multiplicity range 8.<= N(eh <=)24 where the ethorne- results have good precision, the measured ridge yields in pp collisions are substantially larger than the limits set in ethorneannihilations. Consequently, the findings presented in this Letter suggest that the processes involved in ethorne- annihilations do not contribute significantly to the emergence of long-range correlations in pp collisions.
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页数:13
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