Multipole analysis of IceCube data to search for dark matter accumulated in the Galactic halo

被引：36

作者：

Aartsen, M. G. ^{[2
]}

Ackermann, M. ^{[46
]}

Adams, J. ^{[16
]}

Aguilar, J. A. ^{[24
]}

Ahlers, M. ^{[29
]}

Ahrens, M. ^{[37
]}

Altmann, D. ^{[23
]}

Anderson, T. ^{[43
]}

Arguelles, C. ^{[29
]}

Arlen, T. C. ^{[43
]}

Auffenberg, J. ^{[1
]}

Bai, X. ^{[35
]}

Barwick, S. W. ^{[26
]}

Baum, V. ^{[30
]}

Beatty, J. J. ^{[18
,19
]}

Tjus, J. Becker ^{[11
]}

Becker, K. -H. ^{[45
]}

BenZvi, S. ^{[29
]}

Berghaus, P. ^{[46
]}

Berley, D. ^{[17
]}

Bernardini, E. ^{[46
]}

Bernhard, A. ^{[32
]}

Besson, D. Z. ^{[27
]}

Binder, G. ^{[8
,9
]}

Bindig, D. ^{[45
]}

Bissok, M. ^{[1
]}

Blaufuss, E. ^{[17
]}

Blumenthal, J. ^{[1
]}

Boersma, D. J. ^{[44
]}

Bohm, C. ^{[37
]}

Bos, F. ^{[11
]}

Bose, D. ^{[39
]}

Boeser, S. ^{[12
]}

Botner, O. ^{[44
]}

Brayeur, L. ^{[14
]}

Bretz, H. -P. ^{[46
]}

Brown, A. M. ^{[16
]}

Casey, J. ^{[5
,6
]}

Casier, M. ^{[14
]}

Chirkin, D. ^{[29
]}

Christov, A. ^{[24
]}

Christy, B. ^{[17
]}

Clark, K. ^{[40
]}

Classen, L. ^{[23
]}

Clevermann, F. ^{[21
]}

Coenders, S. ^{[32
]}

Cowen, D. F. ^{[42
,43
]}

Silva, A. H. Cruz ^{[46
]}

Danninger, M. ^{[37
]}

Daughhetee, J. ^{[5
,6
]}

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 Libre Bruxelles, Sci Fac CP230, B-1050 Brussels, Belgium

[14] Vrije Univ Brussel, Dienst ELEM, B-1050 Brussels, Belgium

[15] Chiba Univ, Dept Phys, Chiba 2638522, Japan

[16] Univ Canterbury, Dept Phys & Astron, Christchurch 4800, New Zealand

[17] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[18] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA

[19] Ohio State Univ, Dept Astron, Columbus, OH 43210 USA

[20] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[21] TU Dortmund Univ, Dept Phys, D-44221 Dortmund, Germany

[22] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada

[23] Univ Erlangen Nurnberg, Erlangen Ctr Astroparticle Phys, D-91058 Erlangen, Germany

[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] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[28] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

[29] Univ Wisconsin, Dept Phys, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53706 USA

[30] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[31] Univ Mons, B-7000 Mons, Belgium

[32] Tech Univ Munich, D-85748 Garching, Germany

[33] Univ Delaware, Bartol Res Inst, Dept Phys & Astron, Newark, DE 19716 USA

[34] Univ Oxford, Dept Phys, Oxford OX1 3NP, England

[35] South Dakota Sch Mines & Technol, Dept Phys, Rapid City, SD 57701 USA

[36] Univ Wisconsin, Dept Phys, River Falls, WI 54022 USA

[37] Stockholm Univ, Dept Phys, Oskar Klein Ctr, S-10691 Stockholm, Sweden

[38] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[39] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[40] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[41] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA

[42] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[43] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[44] Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden

[45] Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany

[46] DESY, D-15735 Zeuthen, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2015年 / 75卷 / 01期

基金：

澳大利亚研究理事会; 美国国家科学基金会; 加拿大自然科学与工程研究理事会; 瑞士国家科学基金会; 新加坡国家研究基金会; 瑞典研究理事会;

关键词：

COSMIC-RAYS; ANISOTROPY; PERFORMANCE; CONSTRAINTS; ENERGIES; LIMITS; MODEL;

D O I：

10.1140/epjc/s10052-014-3224-5

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Dark matter which is bound in the Galactic halo might self-annihilate and produce a flux of stable final state particles, e. g. high energy neutrinos. These neutrinos can be detected with IceCube, a cubic-kilometer sized Cherenkov detector. Given IceCube's large field of view, a characteristic anisotropy of the additional neutrino flux is expected. In this paper we describe a multipole method to search for such a large-scale anisotropy in IceCube data. This method uses the expansion coefficients of a multipole expansion of neutrino arrival directions and incorporates signal-specific weights for each expansion coefficient. We apply the technique to a high-purity muon neutrino sample from the Northern Hemisphere. The final result is compatible with the null-hypothesis. As no signal was observed, we present limits on the self-annihilation cross-section averaged over the relative velocity distribution <sigma(A)v > down to 1.9x10(-23) cm(3) s(-1) for a dark matter particle mass of 700-1,000 GeV and direct annihilation into nu(nu) over bar. The resulting exclusion limits come close to exclusion limits from gamma-ray experiments, that focus on the outer Galactic halo, for high dark matter masses of a few TeV and hard annihilation channels.

引用

页码：1 / 16

页数：16

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