Measurement of the Low-Energy Antideuteron Inelastic Cross Section

被引：13

作者：

Acharya, S. ^{[155
]}

Adamova, D. ^{[108
]}

Adler, A. ^{[87
]}

Adolfsson, J. ^{[94
]}

Aggarwal, M. M. ^{[113
]}

Rinella, G. Aglieri ^{[47
]}

Agnello, M. ^{[32
,41
]}

Agrawal, N. ^{[12
,13
,67
]}

Ahammed, Z. ^{[155
]}

Ahmad, S. ^{[19
]}

Ahn, S. U. ^{[89
]}

Akbar, Z. ^{[64
]}

Akindinov, A. ^{[105
]}

Al-Turany, M. ^{[120
,121
]}

Alam, S. N. ^{[53
,155
]}

Albuquerque, D. S. D. ^{[136
]}

Aleksandrov, D. ^{[101
]}

Alessandro, B. ^{[72
]}

Alfanda, H. M. ^{[7
]}

Alfaro Molina, R. ^{[84
]}

Ali, B. ^{[19
]}

Ali, Y. ^{[17
]}

Alici, A. ^{[12
,13
,33
,34
,67
]}

Alizadehvandchali, N. ^{[139
]}

Alkin, A. ^{[2
,47
]}

Alme, J. ^{[24
]}

Alt, T. ^{[81
]}

Altenkamper, L. ^{[24
]}

Altsybeev, I ^{[127
]}

Anaam, M. N. ^{[7
]}

Andrei, C. ^{[61
]}

Andreou, D. ^{[47
]}

Andronic, A. ^{[158
]}

Angeletti, M. ^{[47
]}

Anguelov, V ^{[117
]}

Anson, C. ^{[18
]}

Anticic, T. ^{[122
]}

Antinori, F. ^{[70
]}

Antonioli, P. ^{[67
]}

Apadula, N. ^{[93
]}

Aphecetche, L. ^{[129
]}

Appelshaeuser, H. ^{[81
]}

Arcelli, S. ^{[33
,34
]}

Arnaldi, R. ^{[72
]}

Arratia, M. ^{[93
]}

Arsene, I. C. ^{[23
]}

Arslandok, M. ^{[117
]}

Augustinus, A. ^{[47
]}

Averbeck, R. ^{[120
,121
]}

Aziz, S. ^{[91
]}

机构：

[1] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia

[2] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[3] Bose Inst, Dept Phys, Kolkata, India

[4] Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India

[5] Budker Inst Nucl Phys, Novosibirsk, Russia

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

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

[8] IN2P3, Ctr Calcul, Lyon, France

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

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

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

[12] Museo Stor Fis, Ctr Fermi, Rome, Italy

[13] Ctr Studi & Ric Enrico Fermi, Rome, Italy

[14] Chicago State Univ, Chicago, IL USA

[15] China Inst Atom Energy, Beijing, Peoples R China

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

[17] COMSATS Univ Islamabad, Islamabad, Pakistan

[18] Creighton Univ, Omaha, NE 68178 USA

[19] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India

[20] Pusan Natl Univ, Dept Phys, Pusan, South Korea

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

[22] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

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

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

[25] Univ La Sapienzae, Dipartimento Fis, Rome, Italy

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

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

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

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

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

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

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

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

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

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

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

[37] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

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

[39] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

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

[41] Politecn Torino, Dipartimento DISAT, Turin, Italy

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

[43] Ist Nazl Fis Nucl, Sez Torino, Alessandria, Italy

[44] Univ Messina, Dipartimento Sci MIFT, Messina, Italy

[45] Dipartimento Interateneo Fis M Merline, Bari, Italy

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

[47] CERN, European Org Nucl Res, Geneva, Switzerland

[48] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[49] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway

[50] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 16期

基金：

中国国家自然科学基金; 奥地利科学基金会; 新加坡国家研究基金会; 英国科学技术设施理事会;

关键词：

PB-PB COLLISIONS; LIGHT-NUCLEI; (ANTI-)DEUTERON PRODUCTION; MOMENTUM RANGE; PP COLLISIONS; GEV-C; ABSORPTION; HE-4; PROPAGATION; COALESCENCE;

D O I：

10.1103/PhysRevLett.125.162001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this Letter, we report the first measurement of the inelastic cross section for antideuteron-nucleus interactions at low particle momenta, covering a range of 0.3 <= p < 4 GeV/c. The measurement is carried out using p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of root s(NN) = 5.02 TeV, recorded with the ALICE detector at the CERN LHC and utilizing the detector material as an absorber for antideuterons and antiprotons. The extracted raw primary antiparticle-to-particle ratios are compared to the results from detailed ALICE simulations based on the GEANT4 toolkit for the propagation of (anti)particles through the detector material. The analysis of the raw primary (anti)proton spectra serves as a benchmark for this study, since their hadronic interaction cross sections are well constrained experimentally. The first measurement of the inelastic cross section for antideuteron-nucleus interactions averaged over the ALICE detector material with atomic mass numbers < A > = 17.4 and 31.8 is obtained. The measured inelastic cross section points to a possible excess with respect to the Glauber model parametrization used in GEANT4 in the lowest momentum interval of 0.3 <= p < 0.47 GeV/c up to a factor 2.1. This result is relevant for the understanding of antimatter propagation and the contributions to antinuclei production from cosmic ray interactions within the interstellar medium. In addition, the momentum range covered by this measurement is of particular importance to evaluate signal predictions for indirect dark-matter searches.

引用

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