Limit on the electron neutrino magnetic moment from the kuo-sheng reactor neutrino experiment.
نویسندگان
چکیده
A search of neutrino magnetic moment was carried out at the Kuo-Sheng Nuclear Power Station at a distance of 28 m from the 2.9 GW reactor core. With a high purity germanium detector of mass 1.06 kg surrounded by scintillating NaI(Tl) and CsI(Tl) crystals as anti-Compton detectors, a detection threshold of 5 keV and a background level of 1 kg(-1) keV(-1) day(-1) at 12-60 keV were achieved. Based on 4712 and 1250 h of reactor ON and OFF data, respectively, the limit on the neutrino magnetic moment of mu(nu;(e))<1.3x10(-10)mu(B) at 90% confidence level was derived. An indirect bound of the nu;(e) radiative lifetime of m(3)(nu)tau(nu)>2.8x10(18) eV(3) s can be inferred.
منابع مشابه
Low Energy Neutrino Physics at the Kuo-Sheng Reactor Neutrino Laboratory in Taiwan
A laboratory has been constructed by the TEXONO Collaboration at the Kuo-Sheng Reactor Power Plant in Taiwan to study low energy neutrino physics. The facilities of the laboratory are described. A limit on the neutrino magnetic moment of μν̄e < 1.3× 10 −10 μB at 90% confidence level has been achieved from measurements with a high-purity germanium detector. Other physics topics, as well as the va...
متن کاملExperiment Site Primary Containment Reactor Pressure Vessel Suppression Pool Building Auxiliary
This article reviews the research program and efforts for the TEXONO Collaboration on neu-trino and astro-particle physics. The " flagship " program is on reactor-based neutrino physics at the Kuo-Sheng (KS) Power Plant in Taiwan. A limit on the neutrino magnetic moment of µ ¯ νe < 1.3 × 10 −10 µ B at 90% confidence level was derived from measurements with a high purity germanium detector. Othe...
متن کاملپراکندگی نوترینوی میونی از روی الکترون قطبیده به الکترون و نوترینو در فضا- زمان ناجابه‌جایی
For neutrino scattering from polarized electron, the weak interaction term in the cross section is significantly suppressed by the polarized term. The magnetic moment term does not receive any correction from the electron polarization. Hence, the study of the magnetic moment of neutrinos through scattering from the polarized electron leads to a stronger bound on the neutrino magnetic moment com...
متن کاملNeutrino Mass and Magnetic Moment from Neutrino-electron Scattering
We study both the elastic (νe → νe) and the radiative process (νe → νeγ) and discuss how these processes can shed light on some current topics in neutrino physics such as a neutrino magnetic moment and neutrino oscillations. The radiative process allows to reach low values of Q without the need to operate at very small energies of recoil electrons, a favourable scenario to search for a neutrino...
متن کاملν̄e− e− Scattering Cross-Section and Constraints on New Physics with a CsI(Tl) Crystal Array at the Kuo-Sheng Reactor Laboratory
The ν̄e− e− elastic scattering cross-section was measured with a CsI(Tl) scintillating crystal detector array with a total mass of 187 kg at the Kuo-Sheng Nuclear Power Station. The detectors were exposed to a reactor ν̄e flux of 6.4×1012 cm−2s−1 originated from a core with 2.9 GW thermal power. The physics motivations, conceptual design, detector hardware, data analysis and background understand...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review letters
دوره 90 13 شماره
صفحات -
تاریخ انتشار 2003