Detection of astrophysical tau neutrino candidates in IceCube
Detection of astrophysical tau neutrino candidates in IceCube
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DOI：
10.1140/epjc/s10052-022-10795-y
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
R. Abbasi;M. Ackermann;J. Adams;J. Aguilar;M. Ahlers;M. Ahrens;C. Alispach;A. A. Alves-A.;N. M. Amin;K. Andeen;T. Anderson;I. Ansseau;G.;Anton;C. Argüelles;S. Axani;X. Bai;A. Balagopal;V.;A. Barbano;S. Barwick;B. Bastian;V. Basu;V. Baum;S. Baur;R. Bay;J. Beatty;K-h;Becker;J. Tjus;C. Bellenghi;S. BenZvi;D.;Berley;E. Bernardini;D. Besson;G. Binder;Bindig;E. Blaufuss;S. Blot;S. Böser;O. Botner;J.;Böttcher;E. Bourbeau;J. Bourbeau;F. Bradascio;Braun;S. Bron;J. Brostean-Kaiser;A. Burgman;R.;S. Busse;M. Campana;C. Chen;D. Chirkin;S.;Choi;B. Clark;K. Clark;L. Classen;A. Coleman;G. Collin;J. Conrad;P. Coppin;P. Correa;D. Cowen;R. Cross;P. Dave;C. Clercq;J. DeLaunay;H. Dembinski;K. Deoskar;S. De;Ridder;A. Desai;P. Desiati;K. D. Vries;G. De;Wasseige;M. With;T. DeYoung;S. Dharani;A.;Diaz;J. C. Díaz-Vélez;H. Dujmovic;M. Dunkman;M. DuVernois;E. Dvorak;T. Ehrhardt;P. Eller;R. Engel;J. Evans;P. Evenson;S. Fahey;R. A.;Fazely;S. Fiedlschuster;A. Fienberg;K. Filimonov;C. Finley;L. Fischer;D. Fox;A. Franckowiak;E. Friedman;A. Fritz;P. Fürst;T. Gaisser;Gallagher;E. Ganster;S. Garrappa;L. Gerhardt;Ghadimi;T. Glauch;T. Glüsenkamp;A. Goldschmidt;J. G. Gonzalez;S. Goswami;D. Grant;T. Grégoire;Z. Griffith;S. Griswold;M. Gündüz;C. Haack;A. Hallgren;R. Halliday;L. Halve;F. Halzen;M.;H. Minh;K. Hanson;J. Hardin;A. Haungs;Hauser;D. Hebecker;K. Helbing;F. Henningsen;S. Hickford;J. Hignight;C. Hill;G. Hill;D. K.;Hoffman;R. Hoffmann;T. Hoinka;B. Hokanson-Fasig;K. Hoshina;F. Huang;M. Huber;T. Huber;K.;Hultqvist;Mirco Hünnefeld;R. Hussain;S. In;N.;Iovine;A. Ishihara;M. Jansson;G. Japaridze;Jeong;B. Jones;R. Joppe;D. Kang;W. Kang;X. Kang;A. Kappes;D. Kappesser;T. Karg;Karl;A. Karle;U. Katz;M. Kauer;M. Kellermann;J. Kelley;A. Kheirandish;J. Kim;K. Kin;T.;Kintscher;J. Kiryluk;S. Klein;R. Koirala;H.;H Kolanoski;L. Köpke;C. Kopper;S. Kopper;J. D.;Koskinen;P. Koundal;M. Kovacevich;M. Kowalski;K. Krings;G. Krückl;N. Kulacz;N. Kurahashi;Kyriacou;C. L. Gualda;J. Lanfranchi;J. Larson;F. Lauber;J. Lazar;K. Leonard
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文献类型：
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作者：
R. Abbasi;M. Ackermann;J. Adams;J. Aguilar;M. Ahlers;M. Ahrens;C. Alispach;A. A. Alves-A.;N. M. Amin;K. Andeen;T. Anderson;I. Ansseau;G.;Anton;C. Argüelles;S. Axani;X. Bai;A. Balagopal;V.;A. Barbano;S. Barwick;B. Bastian;V. Basu;V. Baum;S. Baur;R. Bay;J. Beatty;K-h;Becker;J. Tjus;C. Bellenghi;S. BenZvi;D.;Berley;E. Bernardini;D. Besson;G. Binder;Bindig;E. Blaufuss;S. Blot;S. Böser;O. Botner;J.;Böttcher;E. Bourbeau;J. Bourbeau;F. Bradascio;Braun;S. Bron;J. Brostean-Kaiser;A. Burgman;R.;S. Busse;M. Campana;C. Chen;D. Chirkin;S.;Choi;B. Clark;K. Clark;L. Classen;A. Coleman;G. Collin;J. Conrad;P. Coppin;P. Correa;D. Cowen;R. Cross;P. Dave;C. Clercq;J. DeLaunay;H. Dembinski;K. Deoskar;S. De;Ridder;A. Desai;P. Desiati;K. D. Vries;G. De;Wasseige;M. With;T. DeYoung;S. Dharani;A.;Diaz;J. C. Díaz-Vélez;H. Dujmovic;M. Dunkman;M. DuVernois;E. Dvorak;T. Ehrhardt;P. Eller;R. Engel;J. Evans;P. Evenson;S. Fahey;R. A.;Fazely;S. Fiedlschuster;A. Fienberg;K. Filimonov;C. Finley;L. Fischer;D. Fox;A. Franckowiak;E. Friedman;A. Fritz;P. Fürst;T. Gaisser;Gallagher;E. Ganster;S. Garrappa;L. Gerhardt;Ghadimi;T. Glauch;T. Glüsenkamp;A. Goldschmidt;J. G. Gonzalez;S. Goswami;D. Grant;T. Grégoire;Z. Griffith;S. Griswold;M. Gündüz;C. Haack;A. Hallgren;R. Halliday;L. Halve;F. Halzen;M.;H. Minh;K. Hanson;J. Hardin;A. Haungs;Hauser;D. Hebecker;K. Helbing;F. Henningsen;S. Hickford;J. Hignight;C. Hill;G. Hill;D. K.;Hoffman;R. Hoffmann;T. Hoinka;B. Hokanson-Fasig;K. Hoshina;F. Huang;M. Huber;T. Huber;K.;Hultqvist;Mirco Hünnefeld;R. Hussain;S. In;N.;Iovine;A. Ishihara;M. Jansson;G. Japaridze;Jeong;B. Jones;R. Joppe;D. Kang;W. Kang;X. Kang;A. Kappes;D. Kappesser;T. Karg;Karl;A. Karle;U. Katz;M. Kauer;M. Kellermann;J. Kelley;A. Kheirandish;J. Kim;K. Kin;T.;Kintscher;J. Kiryluk;S. Klein;R. Koirala;H.;H Kolanoski;L. Köpke;C. Kopper;S. Kopper;J. D.;Koskinen;P. Koundal;M. Kovacevich;M. Kowalski;K. Krings;G. Krückl;N. Kulacz;N. Kurahashi;Kyriacou;C. L. Gualda;J. Lanfranchi;J. Larson;F. Lauber;J. Lazar;K. Leonard
高能 tau 中微子很少在大气宇宙射线簇射或宇宙粒子加速器中产生，但由于味道混合，预计会在中微子在宇宙距离上传播时出现。当高能 tau 中微子在 IceCube 探测器内相互作用时，两个空间上分离的能量沉积可能会被解析，第一个来自带电电流相互作用，第二个来自 tau 轻子衰变。我们报告了对 7.5 年 IceCube 数据的新颖分析，该分析在该时期收集的 60 个“高能起始事件”(HESE) 中识别出了两个候选 tau 中微子。 HESE 样本具有高纯度、全天空灵敏度和每种中微子味道的独特观测特征，从而能够对味道成分进行新的测量。测得的天体物理中微子风味成分与预期一致，天体物理 tau 中微子通量显示为 2.8 显着性。
High-energy tau neutrinos are rarely produced in atmospheric cosmic-ray showers or at cosmic particle accelerators, but are expected to emerge during neutrino propagation over cosmic distances due to flavor mixing. When high energy tau neutrinos interact inside the IceCube detector, two spatially separated energy depositions may be resolved, the first from the charged current interaction and the second from the tau lepton decay. We report a novel analysis of 7.5 years of IceCube data that identifies two candidate tau neutrinos among the 60 “High-Energy Starting Events” (HESE) collected during that period. The HESE sample offers high purity, all-sky sensitivity, and distinct observational signatures for each neutrino flavor, enabling a new measurement of the flavor composition. The measured astrophysical neutrino flavor composition is consistent with expectations, and an astrophysical tau neutrino flux is indicated at 2.8significance.