Search for heavy neutral leptons decaying into muon-pion pairs in the MicroBooNE detector-猫眼课题宝

DOI：

10.1103/physrevd.101.052001

发表时间：

2019-11

期刊：

Physical Review D

影响因子：

通讯作者：

中科院分区：

物理与天体物理2区

文献类型：

作者：

P. Abratenko;M. Alrashed;Rui An;J. Anthony;J. Asaadi;A. Ashkenazi;S. Balasubramanian;B. Baller;C. Barnes;G. Barr;V. Basque;S. Berkman;A. Bhanderi;A. Bhat;M. Bishai;A. Blake;T. Bolton;L. Camilleri;D. Caratelli;I. Caro Terrazas;R. Castillo Fernandez;F. Cavanna;G. Cerati;Y. Chen;E. Church;D. Cianci;E. Cohen;J. Conrad;M. Convery;L. Cooper-Troendle;J. I. Crespo-Anadón;M. del Tutto;D. Devitt;L. Dominé;K. Duffy;S. Dytman;B. Eberly;A. Ereditato;L. Escudero Sánchez;J. Evans;R. Fitzpatrick;B. Fleming;N. Foppiani;D. Franco;A. Furmanski;D. Garcia-Gamez;S. Gardiner;V. Genty;D. Goeldi;S. Gollapinni;O. Goodwin;E. Gramellini;P. Green;H. Greenlee;L. Gu;W. Gu;R. Guenette;P. Guzowski;P. Hamilton;O. Hen;C. Hill;G. Horton-Smith;A. Hourlier;E. Huang;R. Itay;C. James;J. Jan de Vries;X. Ji;L. Jiang;J. Jo;R. A. Johnson-R. A.-Johnson-2110759738;J. Joshi;Y. Jwa;G. Karagiorgi;W. Ketchum;B. Kirby;M. Kirby;T. Kobilarcik;I. Kreslo;R. LaZur;I. Lepetic;Y. Li;A. Lister;B. Littlejohn;S. Lockwitz;D. Lorca;W. Louis;M. Luethi;B. Lundberg;X. Luo;A. Marchionni;S. Marcocci;C. Mariani;J. Marshall;J. Martín-Albo;D. Martinez Caicedo;K. Mason;A. Mastbaum;N. McConkey;V. Meddage;T. Mettler;K. Miller;J. Mills;K. Mistry;A. Mogan;T. Mohayai;J. Moon;M. Mooney;C. Moore;J. Mousseau;R. Murrells;D. Naples;R. Neely;P. Nienaber;J. Nowak;O. Palamara;V. Pandey;V. Paolone;A. Papadopoulou;V. Papavassiliou;S. Pate;A. Paudel;Z. Pavlovic;E. Piasetzky;D. Porzio;S. Prince;G. Pulliam;X. Qian;J. Raaf;V. Radeka;A. Rafique;L. Ren;L. Rochester;H. Rogers;M. Ross-Lonergan;C. Rudolf von Rohr;B. Russell;G. Scanavini;D. Schmitz;A. Schukraft;W. Seligman;M. Shaevitz;R. Sharankova;J. Sinclair;A. Smith;E. Snider;M. Soderberg;S. Söldner-Rembold;S. Soleti;P. Spentzouris;J. Spitz;M. Stancari;J. John;T. Strauss;K. Sutton;S. Sword-Fehlberg;A. Szelc;N. Tagg;W. Tang;K. Terao;R. Thornton;M. Toups;Y. Tsai;S. Tufanli;M. Uchida;T. Usher;W. Van De Pontseele;R. G. Van de Water;B. Viren;M. Weber;H. Wei;D. A. Wickremasinghe;Z. Williams;S. Wolbers;T. Wongjirad;K. Woodruff;M. Wospakrik;W. Wu;T. Yang;G. Yarbrough;L. Yates;G. Zeller;J. Zennamo;C. Zhang

作者(S)：阿布拉滕科，P；阿拉希德，M；安，R；安东尼，J；阿萨迪，J；阿萨迪，J；阿什肯纳齐，A；巴拉苏布拉曼尼亚，S；巴勒，B；巴恩斯，C；巴尔，G；巴斯克，V；伯克曼，S；Bhanderi，A；Bhat，A；Bishai，M；Blake，A；Bolton，T；Camilleri，L；Caratelli，D；Caro Terrazas，I；Castillo Fernandez，R；Cavanna，F；Cerati，G；Chen，Y；Church，E；Cianci，D；Cohen，EO；Conrad，JM；Convery，M；Cooper-Troendle，L；克雷斯波-阿纳顿，JI；德尔-图托，M；德维特，D；多米尼恩，L；达菲，K；戴特曼，S；埃伯利，B；埃雷迪托，A；埃斯库德罗·桑切斯，L；埃文斯，JJ；菲茨帕特里克，RS；弗莱明，BT；福普皮亚尼，N；佛朗哥，D；福曼斯基，美联社；加西亚-伽麦斯，D；加德纳，S；吉蒂，V；戈尔迪，D；戈尔迪，D；高拉平尼，S；古德温，O；格拉梅里尼，E；格林，P；格林利，H；Gu，L；Gu，W；Guenette，R；Guzowski，P；汉密尔顿，P；亨氏，O；希尔，C；格雷梅里尼，E；格林，P；格林利，H；Gu，L；Gu，W；Guenette，R；Guzowski，P霍顿-史密斯，GA；Hourlier，A；黄，EC；Itay，R；James，C；Jan de Vries，J；Ji，X；酱，L；Jo，JH；Johnson，RA；Joshi，J；JWA，YJ；Karagiorgi，G；Ketchum，W；Kirby，B；Kirby，M；Kobilarcik，T；Kreslo，I；Lazur，R；Lepetic，I；Li，Y；Lister，A；Littlejohn，BR；Lockwitz，S|摘要：©2020作者。我们利用在费米实验室运行的MicroBooNE液体-Ar时间投影室收集的数据，给出了衰变到μπ对的重中性轻子(HNL)产生的上限。这是第一次在液态Ar TPC中进行这类搜索。我们使用2017年和2018年收集的数据，对应于费米实验室助推器中微子束在目标上曝光2.0×1020个质子，该中微子束主要产生平均能量为≈800 MeV的Muon中微子。与标准模型中微子相比，具有较高质量的HNL预计有更长的飞行时间到液态Ar TPC。因此，数据是用专用触发器记录的，该触发器被配置为检测中微子泄漏到达探测器后发生的HNL衰变。假设扩展μ混合矩阵的元素|Uμ4|2在|Uμ4|2l(6.6-0.9)×10-7(狄拉克HNL)和|Uτ4|2l(4.7-0.7)×10-7的范围内(对于Majorana HNL)，假设HNL的质量在2 6 0和385MeV之间，并且|Ue4|2=|Uμ4|2=0，我们将扩展PMNS混合矩阵的元素|Uτ4|2设置为90%置信度。

Author(s): Abratenko, P; Alrashed, M; An, R; Anthony, J; Asaadi, J; Ashkenazi, A; Balasubramanian, S; Baller, B; Barnes, C; Barr, G; Basque, V; Berkman, S; Bhanderi, A; Bhat, A; Bishai, M; Blake, A; Bolton, T; Camilleri, L; Caratelli, D; Caro Terrazas, I; Castillo Fernandez, R; Cavanna, F; Cerati, G; Chen, Y; Church, E; Cianci, D; Cohen, EO; Conrad, JM; Convery, M; Cooper-Troendle, L; Crespo-Anadon, JI; Del Tutto, M; Devitt, D; Domine, L; Duffy, K; Dytman, S; Eberly, B; Ereditato, A; Escudero Sanchez, L; Evans, JJ; Fitzpatrick, RS; Fleming, BT; Foppiani, N; Franco, D; Furmanski, AP; Garcia-Gamez, D; Gardiner, S; Genty, V; Goeldi, D; Gollapinni, S; Goodwin, O; Gramellini, E; Green, P; Greenlee, H; Gu, L; Gu, W; Guenette, R; Guzowski, P; Hamilton, P; Hen, O; Hill, C; Horton-Smith, GA; Hourlier, A; Huang, EC; Itay, R; James, C; Jan De Vries, J; Ji, X; Jiang, L; Jo, JH; Johnson, RA; Joshi, J; Jwa, YJ; Karagiorgi, G; Ketchum, W; Kirby, B; Kirby, M; Kobilarcik, T; Kreslo, I; Lazur, R; Lepetic, I; Li, Y; Lister, A; Littlejohn, BR; Lockwitz, S | Abstract: © 2020 authors. We present upper limits on the production of heavy neutral leptons (HNLs) decaying to μπ pairs using data collected with the MicroBooNE liquid-argon time projection chamber (TPC) operating at Fermilab. This search is the first of its kind performed in a liquid-argon TPC. We use data collected in 2017 and 2018 corresponding to an exposure of 2.0×1020 protons on target from the Fermilab Booster Neutrino Beam, which produces mainly muon neutrinos with an average energy of ≈800 MeV. HNLs with higher mass are expected to have a longer time of flight to the liquid-argon TPC than Standard Model neutrinos. The data are therefore recorded with a dedicated trigger configured to detect HNL decays that occur after the neutrino spill reaches the detector. We set upper limits at the 90% confidence level on the element |Uμ4|2 of the extended PMNS mixing matrix in the range |Uμ4|2l(6.6-0.9)×10-7 for Dirac HNLs and |Uμ4|2l(4.7-0.7)×10-7 for Majorana HNLs, assuming HNL masses between 260 and 385 MeV and |Ue4|2=|Uτ4|2=0.

Search for heavy neutral leptons decaying into muon-pion pairs in the MicroBooNE detector

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