Search for two neutrino double electron capture of 124 Xe and 126 Xe in the full exposure of the LUX detector,Journal of Physics G: Nuclear and Particle Physics

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Search for two neutrino double electron capture of 124 Xe and 126 Xe in the full exposure of the LUX detector
Journal of Physics G: Nuclear and Particle Physics ( IF 3.4 ) Pub Date : 2020-09-07 , DOI: 10.1088/1361-6471/ab9c2d
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2} , S Alsum ₃ , H M Arajo ₄ , X Bai ₅ , J Balajthy ₆ , A Baxter ₇ , E P Bernard ₈ , A Bernstein ₉ , T P Biesiadzinski _{1,

2} , E M Boulton _{8,

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11} , B Boxer ₇ , P Brs ₁₂ , S Burdin ₇ , D Byram _{13,

14} , M C Carmona-Benitez ₁₅ , C Chan ₁₆ , J E Cutter ₆ , L de Viveiros ₁₅ , E Druszkiewicz ₁₇ , A Fan _{1,

2} , S Fiorucci _{10,

16} , R J Gaitskell ₁₆ , C Ghag ₁₈ , M G D Gilchriese ₁₀ , C Gwilliam ₇ , C R Hall ₁₉ , S J Haselschwardt ₂₀ , S A Hertel _{10,

21} , D P Hogan ₈ , M Horn _{8,

14} , D Q Huang ₁₆ , C M Ignarra _{1,

2} , R G Jacobsen ₈ , O Jahangir ₁₈ , W Ji _{1,

2} , K Kamdin _{8,

10} , K Kazkaz ₉ , D Khaitan ₁₇ , E V Korolkova ₂₂ , S Kravitz ₁₀ , V A Kudryavtsev ₂₂ , E Leason ₂₃ , B G Lenardo _{6,

9} , K T Lesko ₁₀ , J Liao ₁₆ , J Lin ₈ , A Lindote ₁₂ , M I Lopes ₁₂ , A Manalaysay ₆ , R L Mannino _{3,

24} , N Marangou ₄ , M F Marzioni ₂₃ , D N McKinsey _{8,

10} , D-M Mei ₁₃ , M Moongweluwan ₁₇ , J A Morad ₆ , A StJ Murphy ₂₃ , A Naylor ₂₂ , C Nehrkorn ₂₀ , H N Nelson ₂₀ , F Neves ₁₂ , A Nilima ₂₃ , K C Oliver-Mallory _{8,

10} , K J Palladino ₃ , E K Pease _{8,

10} , Q Riffard _{8,

10} , G R C Rischbieter ₂₅ , C Rhyne ₁₆ , P Rossiter ₂₂ , S Shaw _{18,

20} , T A Shutt _{1,

2} , C Silva ₁₂ , M Solmaz ₂₀ , V N Solovov ₁₂ , P Sorensen ₁₀ , T J Sumner ₄ , M Szydagis ₂₅ , D J Taylor ₁₄ , R Taylor ₄ , W C Taylor ₁₆ , B P Tennyson ₁₁ , P A Terman ₂₄ , D R Tiedt ₁₉ , W H To ₂₆ , M Tripathi ₆ , L Tvrznikova _{8,

10,

11} , U Utku ₁₈ , S Uvarov ₆ , A Vacheret ₄ , V Velan ₈ , R C Webb ₂₄ , J T White ₂₄ , T J Whitis _{1,

2} , M S Witherell ₁₀ , F L H Wolfs ₁₇ , D Woodward ₁₅ , J Xu ₉ , C Zhang ₁₃

Affiliation

SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94205, United States of America
Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94309, United States of America
Department of Physics, University of Wisconsin-Madison, 1150 University Ave., Madison, WI 53706, United States of America
Imperial College London, High Energy Physics, Blackett Laboratory, London SW7 2BZ, United Kingdom
South Dakota School of Mines and Technology, 501 East St Joseph St., Rapid City, SD 57701, United States of America
Department of Physics, University of California Davis, One Shields Ave., Davis, CA 95616, United States of America
Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
Department of Physics, University of California Berkeley, Berkeley, CA 94720, United States of America
Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94551, United States of America
Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA 94720, United States of America
Department of Physics, Yale University, 217 Prospect St., New Haven, CT 06511, United States of America
LIP-Coimbra, Department of Physics, University of Coimbra, Rua Larga, 3004-516 Coimbra, Portugal
Department of Physics, University of South Dakota, 414E Clark St., Vermillion, SD 57069, United States of America
Sanford Underground Research Facility, South Dakota Science and Technology Authority, Lead, SD 57754, United States of America
Department of Physics, Pennsylvania State University, 104 Davey Lab, University Park, PA 16802-6300, United States of America
Department of Physics, Brown University, 182 Hope St., Providence, RI 02912, United States of America
Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, United States of America
Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
Department of Physics, University of Maryland, College Park, MD 20742, United States of America
Department of Physics, University of California Santa Barbara, Santa Barbara, CA 93106, United States of America
Amherst Center for Fundamental Interactions and Department of Physics, University of Massachusetts, Amherst, MA 01003-9337, United States of America
Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH, United Kingdom
SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
Department of Physics, Texas A & M University, College Station, TX 77843, United States of America
University at Albany, Department of Physics, State University of New York, 1400 Washington Ave., Albany, NY 12222, United States of America
Department of Physics, California State University Stanislaus, 1 University Circle, Turlock, CA 95382, United States of America

Two-neutrino double electron capture is a process allowed in the standard model of particle physics. This rare decay has been observed in 78 Kr, 130 Ba and more recently in 124 Xe. In this publication we report on the search for this process in 124 Xe and 126 Xe using the full exposure of the large underground xenon (LUX) experiment, in a total of 27769.5 kg-days. No evidence of a signal was observed, allowing us to set 90% C.L. lower limits for the half-lives of these decays of 2.0 × 10 21 years for 124 Xe and 1.9 × 10 21 years for 126 Xe.

中文翻译：

在LUX检测器完全曝光的情况下搜索两个中微子双电子俘获的124 Xe和126 Xe

中微子双电子俘获是粒子物理学的标准模型中允许的过程。在78 Kr，130 Ba和最近在124 Xe中都观察到了这种罕见的衰变。在本出版物中，我们报告了使用大型地下氙（LUX）实验的总暴露量（总计27769.5千克日）在124 Xe和126 Xe上进行该过程的搜索。没有观察到任何信号的迹象，这使我们可以将这些衰变的半衰期设置为90 X CL下限（对于124 Xe为2.0×10 21年，对于126 Xe为1.9×10 21年）。

更新日期：2020-09-08

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