Scattering Studies with Low-Energy Kaon-Proton Femtoscopy in Proton-Proton Collisions at the LHC

被引：55

作者：

Acharya, S. ^{[155
]}

Adamova, D. ^{[106
]}

Adhya, S. P. ^{[155
]}

Adler, A. ^{[87
]}

Adolfsson, J. ^{[93
]}

Aggarwal, M. M. ^{[111
]}

Rinella, G. Aglieri ^{[47
]}

Agnello, M. ^{[33
,42
]}

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

Ahammed, Z. ^{[155
]}

Ahmad, S. ^{[20
]}

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

Aiola, S. ^{[160
]}

Akindinov, A. ^{[77
]}

Al-Turany, M. ^{[118
,119
]}

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

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

Aleksandrov, D. ^{[100
]}

Alessandro, B. ^{[71
]}

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

Alfaro Molina, R. ^{[85
]}

Ali, B. ^{[20
]}

Ali, Y. ^{[18
]}

Alici, A. ^{[12
,13
,34
,35
,66
]}

Alkin, A. ^{[2
]}

Alme, J. ^{[25
]}

Alt, T. ^{[82
]}

Altenkamper, L. ^{[25
]}

Altsybeev, I ^{[126
]}

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

Andrei, C. ^{[60
]}

Andreou, D. ^{[47
]}

Andrews, H. A. ^{[123
]}

Andronic, A. ^{[158
]}

Angeletti, M. ^{[47
]}

Anguelov, V ^{[115
]}

Anson, C. ^{[19
]}

Anticic, T. ^{[120
]}

Antinori, F. ^{[69
]}

Antonioli, P. ^{[66
]}

Anwar, R. ^{[140
]}

Apadula, N. ^{[92
]}

Aphecetche, L. ^{[128
]}

Appelshaeuser, H. ^{[82
]}

Arcelli, S. ^{[34
,35
]}

Arnaldi, R. ^{[71
]}

Arratia, M. ^{[92
]}

Arsene, I. C. ^{[24
]}

Arslandok, M. ^{[115
]}

Augustinus, A. ^{[47
]}

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, 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] Chonbuk Natl Univ, Jeonju, South Korea

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

[18] COMSATS Univ Islamabad, Islamabad, Pakistan

[19] Creighton Univ, Omaha, NE 68178 USA

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

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

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

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

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

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

[26] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[41] INFN, Grp Collegato, Salerno, Italy

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

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

[44] INFN, Sez Torino, Alessandria, Italy

[45] Dipartimento Interateneo Fis M Merlin, 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 / 124卷 / 09期

基金：

英国科学技术设施理事会;

关键词：

SIGMA-HYPERON PRODUCTION; NUCLEON INTERACTIONS; CHIRAL DYNAMICS; P INTERACTIONS; LAMBDA(1405);

D O I：

10.1103/PhysRevLett.124.092301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The study of the strength and behavior of the antikaon-nucleon ((K) over bar N) interaction constitutes one of the key focuses of the strangeness sector in low-energy quantum chromodynamics (QCD). In this Letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+ p circle plus K- (p) over bar) and (K- p circle plus K+ (p) over bar) pairs measured in pp collisions at root s = 5, 7, and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K- p circle plus K+ (p) over bar) with a significance of 4.4 sigma constitutes the first experimental evidence for the opening of the ((K) over bar (0)(n) circle plus K-0 (n) over bar) breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Julich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the (K) over barN threshold for low-energy QCD chiral models.

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