Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II-猫眼课题宝

DOI：

10.1007/jhep02(2020)038

发表时间：

2019-05

期刊：

Journal of High Energy Physics

影响因子：

5.4

通讯作者：

中科院分区：

物理与天体物理2区

文献类型：

作者：

S. Agarwalla;S. Agarwalla;S. Appel;D. Bravo;L. Miramonti;G. Ranucci;V. Muratova;A. Caminata;M. Gromov;M. Gromov;F. Ortica;S. Zavatarelli;V. Orekhov;V. Orekhov;N. Pilipenko;C. Ghiano;R. Vogelaar;Chen Sun;Chen Sun;K. Fomenko;S. Davini;Ö. Penek;Ö. Penek;F. Cavanna;B. Caccianiga;A. D. Giacinto;M. Misiaszek;L. Papp;M. Pallavicini;A. Goretti;E. Unzhakov;L. Lukyanchenko;A. Ianni;D. Guffanti;E. Litvinovich;E. Litvinovich;P. Cavalcante;E. Hungerford;Z. Bagdasarian;L. Noto;D. D’Angelo;Y. Suvorov;I. Drachnev;L. Ludhova;L. Ludhova;D. Jeschke;G. Raikov;F. Calaprice;O. Smirnov;L. Oberauer;M. Wójcik;M. Agostini;F. Feilitzsch;M. Meyer;D. Franco;A. Jany;J. Benziger;C. Hagner;G. Lukyanchenko;D. Semenov;T. Takeuchi;O. Zaimidoroga;C. Galbiati;K. Zuber;G. Korga;A. Ianni;A. Chepurnov;M. Wurm;M. Skorokhvatov;M. Skorokhvatov;A. Derbin;A. Razeto;S. Schönert;S. Rottenanger;M. Nieslony;K. Altenmüller;P. Lombardi;A. Vishneva;A. Formozov;A. Formozov;A. D. Ludovico;B. Neumair;S. Kumaran;S. Kumaran;A. Sotnikov;E. Meroni;M. Laubenstein;G. Zuzel;S. Marcocci;M. Giammarchi;M. Gschwender;J. Maricic;G. Bellini;K. Choi;L. Pietrofaccia;A. Pocar;I. Machulin;I. Machulin;D. Bick;G. Bonfini;L. Cappelli;G. Manuzio;F. Gabriele;V. Kobychev;G. Testera;N. Rossi;A. Re;A. Romani;T. Lachenmaier;R. Tartaglia;D. Basilico;M. Redchuk;M. Redchuk;O. Smirnov;X. Ding;J. Thurn;V. D. Marcello;J. Martyn;V. Atroshchenko

Borexino探测器通过中微子电子弹性散射测量太阳中微子通量。观测到的光谱由太阳-ν的生存概率pee (e)和中微子与电子的手性耦合决定。一些超越标准模型的物理理论假设存在非标准相互作用（NSI），这些非标准相互作用改变了手性耦合和pee (E)。在本文中，我们使用Borexino II期数据寻找这样的NSI，特别是修改ν e和ν τ e耦合的风味-对角中性电流相互作用。考虑了高金属丰度和低金属丰度假设下太阳中微子通量的标准太阳模型预测。在探测器的灵敏度水平上没有发现新的物理迹象，并且对NSI的参数进行了限制。此外，在相同的数据集上，获得了sin 2 θ W的值，其精度可与反应堆反中微子实验相媲美

The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-ν e survival probability P ee (E), and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI’s) which modify the chiral couplings and P ee (E). In this paper, we search for such NSI’s, in particular, flavor-diagonal neutral current interactions that modify the ν e e and ν τ e couplings using Borexino Phase II data. Standard Solar Model predictions of the solar neutrino fluxes for both high-and low-metallicity assumptions are considered. No indication of new physics is found at the level of sensitivity of the detector and constraints on the parameters of the NSI’s are placed. In addition, with the same dataset the value of sin 2 θ W is obtained with a precision comparable to that achieved in reactor antineutrino experiments

Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II

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