Search for Electronic Recoil Event Rate Modulation with 4 Years of XENON100 Data

被引：49

作者：

Aprile, E. ^{[1
]}

Aalbers, J. ^{[2
,3
]}

Agostini, F. ^{[4
,5
,6
,7
]}

Alfonsi, M. ^{[8
]}

Amaro, F. D. ^{[9
]}

Anthony, M. ^{[1
]}

Arneodo, F. ^{[10
]}

Barrow, P.

Baudis, L. ^{[11
]}

Bauermeister, B. ^{[12
]}

Benabderrahmane, M. L. ^{[10
]}

Berger, T. ^{[13
]}

Breur, P. A. ^{[2
,3
]}

Brown, A. ^{[2
,3
]}

Brown, E. ^{[13
]}

Bruenner, S. ^{[14
]}

Bruno, G. ^{[4
,5
]}

Budnik, R. ^{[15
]}

Buetikofer, L. ^{[16
,27
]}

Calven, J. ^{[12
]}

Cardoso, J. M. R. ^{[9
]}

Cervantes, M. ^{[17
]}

Cichon, D. ^{[14
]}

Coderre, D. ^{[16
,27
]}

Colijn, A. P. ^{[2
,3
]}

Conrad, J. ^{[12
]}

Cussonneau, J. P. ^{[18
]}

Decowski, M. P. ^{[2
,3
]}

de Perio, P. ^{[1
]}

Di Gangi, P. ^{[6
,7
]}

Di Giovanni, A. ^{[10
]}

Diglio, S. ^{[18
]}

Eurin, G. ^{[14
]}

Fei, J. ^{[19
]}

Ferella, A. D. ^{[12
]}

Fieguth, A. ^{[20
]}

Franco, D. ^{[11
]}

Fulgione, W. ^{[4
,5
]}

Rosso, A. Gallo ^{[4
,5
]}

Galloway, M. ^{[11
]}

Gao, F. ^{[1
]}

Garbini, M. ^{[6
,7
]}

Geis, C. ^{[8
]}

Goetzke, L. W. ^{[1
]}

Greene, Z. ^{[1
]}

Grignon, C. ^{[8
]}

Hasterok, C. ^{[14
]}

Hogenbirk, E. ^{[2
,3
]}

Itay, R. ^{[15
]}

Kaminsky, B. ^{[16
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Univ Amsterdam, Sci Pk, NL-1098 XG Amsterdam, Netherlands

[3] Nikhef, Sci Pk, NL-1098 XG Amsterdam, Netherlands

[4] INFN Lab Nazl Gran Sasso, I-67100 Laquila, Italy

[5] Gran Sasso Sci Inst, I-67100 Laquila, Italy

[6] Univ Bologna, Dept Phys & Astrophys, I-40126 Bologna, Italy

[7] INFN Bologna, I-40126 Bologna, Italy

[8] Johannes Gutenberg Univ Mainz, Inst Phys & Exzellenzcluster PRISMA, D-55099 Mainz, Germany

[9] Univ Coimbra, Dept Phys, P-3004516 Coimbra, Portugal

[10] New York Univ Abu Dhabi, Abu Dhabi, U Arab Emirates

[11] Univ Zurich, Phys Inst, CH-8057 Zurich, Switzerland

[12] Stockholm Univ, Dept Phys, Oskar Klein Ctr, SE-10691 Stockholm, Sweden

[13] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA

[14] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[15] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-7610001 Rehovot, Israel

[16] Univ Freiburg, Phys Inst, D-79104 Freiburg, Germany

[17] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA

[18] Univ Nantes, CNRS In2p3, Ecole Mines Nantes, SUBATECH, F-44307 Nantes, France

[19] Univ San Diego, Dept Phys, San Diego, CA 92093 USA

[20] Wilhelms Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[21] INFN Torino, I-10125 Turin, Italy

[22] Osservatorio Astrofis Torino, I-10125 Turin, Italy

[23] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[24] Univ Paris Diderot, Univ Pierre & Marie Curie, LPNHE, CNRS IN2P3, F-75252 Paris, France

[25] Univ Calif Los Angeles, Phys Astron Dept, Los Angeles, CA 90095 USA

[26] Univ Chicago, Dept Phys Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[27] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 10期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

DARK-MATTER SEARCH;

D O I：

10.1103/PhysRevLett.118.101101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a search for electronic recoil event rate modulation signatures in the XENON100 data accumulated over a period of 4 yr, from January 2010 to January 2014. A profile likelihood method, which incorporates the stability of the XENON100 detector and the known electronic recoil background model, is used to quantify the significance of periodicity in the time distribution of events. There is a weak modulation signature at a period of 431(-14)(+16) day in the low energy region of (2.0-5.8) keV in the single scatter event sample, with a global significance of 1.9 sigma; however, no other more significant modulation is observed. The significance of an annual modulation signature drops from 2.8 sigma, from a previous analysis of a subset of this data, to 1.8 sigma with all data combined. Single scatter events in the low energy region are thus used to exclude the DAMA/LIBRA annual modulation as being due to dark matter electron interactions via axial vector coupling at 5.7 sigma.

引用

页数：6

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