Lateral distribution of muons in IceCube cosmic ray events

被引:31
作者
Abbasi, R. [30 ,31 ]
Abdou, Y. [25 ]
Ackermann, M. [47 ]
Adams, J. [17 ]
Aguilar, J. A. [24 ]
Ahlers, M. [30 ,31 ]
Altmann, D. [10 ]
Andeen, K. [30 ,31 ]
Auffenberg, J. [30 ,31 ]
Bai, X. [35 ,36 ,48 ]
Baker, M. [30 ,31 ]
Barwick, S. W. [26 ]
Baum, V. [32 ]
Bay, R. [8 ]
Beattie, K. [9 ]
Beatty, J. J. [19 ,20 ,21 ]
Bechet, S. [14 ]
Tjus, J. Becker [11 ]
Becker, K. -H. [46 ]
Bell, M. [44 ]
Benabderrahmane, M. L. [47 ]
BenZvi, S. [30 ,31 ]
Berdermann, J. [47 ]
Berghaus, P. [47 ]
Berley, D. [18 ]
Bernardini, E. [47 ]
Bertrand, D. [14 ]
Besson, D. Z. [28 ]
Bindig, D. [46 ]
Bissok, M. [1 ]
Blaufuss, E. [18 ]
Blumenthal, J. [1 ]
Boersma, D. J. [1 ]
Bohm, C. [39 ,40 ]
Bose, D. [15 ]
Boeser, S. [12 ]
Botner, O. [45 ]
Brayeur, L. [15 ]
Brown, A. M. [17 ]
Bruijn, R. [27 ]
Brunner, J. [47 ]
Buitink, S. [15 ]
Carson, M. [25 ]
Casey, J. [5 ,6 ]
Casier, M. [15 ]
Chirkin, D. [30 ,31 ]
Christy, B. [18 ]
Clevermann, F. [22 ]
Cohen, S. [27 ]
Cowen, D. F. [43 ,44 ]
机构
[1] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany
[2] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia
[3] Univ Alaska Anchorage, Dept Phys & Astron, Anchorage, AK 99508 USA
[4] Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA
[5] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
[6] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA
[7] Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA
[8] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[9] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[10] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[11] Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany
[12] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[13] Univ W Indies, Dept Phys, BB-11000 Bridgetown, Barbados
[14] Univ Libre Bruxelles, Fac Sci, B-1050 Brussels, Belgium
[15] Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium
[16] Chiba Univ, Dept Phys, Chiba 2638522, Japan
[17] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand
[18] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[19] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[20] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA
[21] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA
[22] TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany
[23] Univ Alberta, Dept Phys, Edmonton, AB T6G 2G7, Canada
[24] Univ Geneva, Dept Phys Nucl & Corpusculaire, CH-1211 Geneva, Switzerland
[25] Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium
[26] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[27] Ecole Polytech Fed Lausanne, High Energy Phys Lab, CH-1015 Lausanne, Switzerland
[28] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA
[29] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA
[30] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[31] Univ Wisconsin, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA
[32] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[33] Univ Mons, B-7000 Mons, Belgium
[34] Tech Univ Munich, D-85748 Garching, Germany
[35] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA
[36] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
[37] Univ Oxford, Dept Phys, Oxford OX1 3NP, England
[38] Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA
[39] Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden
[40] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden
[41] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[42] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA
[43] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
[44] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[45] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden
[46] Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany
[47] DESY, D-15735 Zeuthen, Germany
[48] S Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD 57701 USA
[49] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[50] Sezione Ist Nazl Fis Nucl, Dipartimento Fis, I-70126 Bari, Italy
来源
PHYSICAL REVIEW D | 2013年 / 87卷 / 01期
基金
瑞典研究理事会; 瑞士国家科学基金会; 美国国家科学基金会; 澳大利亚研究理事会;
关键词
D O I
10.1103/PhysRevD.87.012005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In cosmic ray air showers, the muon lateral separation from the center of the shower is a measure of the transverse momentum that the muon parent acquired in the cosmic ray interaction. IceCube has observed cosmic ray interactions that produce muons laterally separated by up to 400 m from the shower core, a factor of 6 larger distance than previous measurements. These muons originate in high p(T) (> 2 GeV/c) interactions from the incident cosmic ray, or high-energy secondary interactions. The separation distribution shows a transition to a power law at large values, indicating the presence of a hard p(T) component that can be described by perturbative quantum chromodynamics. However, the rates and the zenith angle distributions of these events are not well reproduced with the cosmic ray models tested here, even those that include charm interactions. This discrepancy may be explained by a larger fraction of kaons and charmed particles than is currently incorporated in the simulations. DOI: 10.1103/PhysRevD.87.012005
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页数:13
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