First search for atmospheric and extraterrestrial neutrino-induced cascades with the IceCube detector

被引：33

作者：

Abbasi, R. ^{[30
]}

Abdou, Y. ^{[24
]}

Abu-Zayyad, T. ^{[36
]}

Adams, J. ^{[17
]}

Aguilar, J. A. ^{[30
]}

Ahlers, M. ^{[35
]}

Andeen, K. ^{[30
]}

Auffenberg, J. ^{[42
]}

Bai, X. ^{[33
,34
]}

Baker, M. ^{[30
]}

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

Bay, R. ^{[9
]}

Alba, J. L. Bazo ^{[43
]}

Beattie, K. ^{[1
]}

Beatty, J. J. ^{[19
,20
,21
]}

Bechet, S. ^{[14
]}

Becker, J. K. ^{[11
]}

Becker, K-H ^{[42
]}

Benabderrahmane, M. L. ^{[43
]}

BenZvi, S. ^{[30
]}

Berdermann, J. ^{[43
]}

Berghaus, P. ^{[30
]}

Berley, D. ^{[18
]}

Bernardini, E. ^{[43
]}

Bertrand, D. ^{[14
]}

Besson, D. Z. ^{[28
]}

Bindig, D. ^{[42
]}

Bissok, M. ^{[2
]}

Blaufuss, E. ^{[18
]}

Blumenthal, J. ^{[2
]}

Boersma, D. J. ^{[2
]}

Bohm, C. ^{[37
,38
]}

Bose, D. ^{[15
]}

Boeser, S. ^{[12
]}

Botner, O. ^{[41
]}

Braun, J. ^{[30
]}

Brown, A. M. ^{[17
]}

Buitink, S. ^{[1
]}

Carson, M. ^{[24
]}

Chirkin, D. ^{[30
]}

Christy, B. ^{[18
]}

Clem, J. ^{[33
,34
]}

Clevermann, F. ^{[22
]}

Cohen, S. ^{[27
]}

Colnard, C. ^{[25
]}

Cowen, D. F. ^{[39
,40
]}

D'Agostino, M. V. ^{[9
]}

Danninger, M. ^{[37
,38
]}

Daughhetee, J. ^{[6
,7
]}

Davis, J. C. ^{[19
,20
]}

机构：

[1] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[2] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

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

[4] Univ Alaska Anchorage, Dept Phys & Astron, Anchorage, AK 99508 USA

[5] Clark Atlanta Univ, CTSPS, Atlanta, GA 30314 USA

[6] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

[7] Georgia Inst Technol, Ctr Relativist Astrophys, Atlanta, GA 30332 USA

[8] Southern Univ, Dept Phys, Baton Rouge, LA 70813 USA

[9] Univ Calif Berkeley, Dept Phys, 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 Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

[25] Max Planck Inst Kernphys, D-69177 Heidelberg, Germany

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

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

[33] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

[34] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

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

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

[37] Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden

[38] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden

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

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

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

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

[43] DESY, D-15735 Zeuthen, Germany

[44] Univ Bari, Dipartmento Fis, Sez INFN, I-70126 Bari, Italy

[45] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 07期

基金：

美国国家科学基金会; 瑞典研究理事会; 瑞士国家科学基金会;

关键词：

HIGH-ENERGY NEUTRINOS; SCATTERING; SELECTION; SPECTRUM; ICE;

D O I：

10.1103/PhysRevD.84.072001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the first search for atmospheric and for diffuse astrophysical neutrino-induced showers (cascades) in the IceCube detector using 257 days of data collected in the year 2007-2008 with 22 strings active. A total of 14 events with energies above 16 TeV remained after event selections in the diffuse analysis, with an expected total background contribution of 8.3 +/- 3.6. At 90% confidence we set an upper limit of E-2 Phi(90%CL) < 3.6 x 10(-7) GeV.cm(-2).s(-1).sr(-1) on the diffuse flux of neutrinos of all flavors in the energy range between 24 TeV and 6.6 PeV assuming that Phi proportional to E-2 and the flavor composition of the nu(e):nu(mu):nu(tau) flux is 1:1:1 at the Earth. The atmospheric neutrino analysis was optimized for lower energies. A total of 12 events were observed with energies above 5 TeV. The observed number of events is consistent with the expected background, within the uncertainties.

引用

页数：15