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Magnetars are neutron stars with very strong magnetic fields on the order of $10^{13}$ to $10^{15}$ G. Young magnetars with oppositely-oriented magnetic fields and spin moments may emit high-energy (HE) neutrinos from their polar caps as…

High Energy Astrophysical Phenomena · Physics 2021-07-20 Ava Ghadimi , Marcos Santander

Measurements of flavor ratios of astrophysical neutrino fluxes are sensitive to the two yet unknown mixing parameters $\theta_{13}$ and $\delta$ through the combination $\sin\theta_{13}\cos\delta$. We extend previous studies by considering…

High Energy Physics - Phenomenology · Physics 2007-07-03 Kfir Blum , Yosef Nir , Eli Waxman

10 years from now reactor neutrino experiments will attempt to determine which neutrino mass eigenstate is the most massive. In this letter we present the results of more than seven million detailed simulations of such experiments, studying…

High Energy Physics - Phenomenology · Physics 2013-09-16 Emilio Ciuffoli , Jarah Evslin , Xinmin Zhang

A high intensity source of a single neutrino flavour with known spectrum is most desirable for precision measurements, the consensus direction for the future. The beta beam is an especially suitable option for this. We discuss the prospects…

High Energy Physics - Phenomenology · Physics 2014-11-18 Sanjib Kumar Agarwalla , Amitava Raychaudhuri , Abhijit Samanta

We propose a method to measure the neutrino mass kinematically using beams of ions which undergo beta decay. The idea is to tune the ion beam momentum so that in most decays, the electron is forward moving with respect to the beam, and only…

High Energy Physics - Phenomenology · Physics 2009-12-04 Mats Lindroos , Bob McElrath , Christopher Orme , Thomas Schwetz

We focus on the ongoing and future observations for both the 21 cm line and the CMB B-mode polarization produced by a CMB lensing, and study their sensitivities to the effective number of neutrino species, the total neutrino mass, and the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Yoshihiko Oyama , Akie Shimizu , Kazunori Kohri

We explore the feasibility of detecting heavy neutrinos by the existing facilities of neutrino experiments. A heavy neutrino in the mass range 1 MeV < M < 500 MeV is produced by pion or kaon decay, and decays to charged particles which…

High Energy Physics - Phenomenology · Physics 2015-06-12 Takehiko Asaka , Shintaro Eijima , Atsushi Watanabe

Recent measurements of large theta_{13} by Daya Bay and RENO reactor experiments have opened up the possibility of determining the neutrino mass hierarchy, i.e. the sign of the mass squared splitting Delta m_{31}^2, the CP-violating phase…

High Energy Physics - Phenomenology · Physics 2014-04-23 Rupak Dutta , Nita Sinha , Sushant K. Raut

A muon collider is expected to produce a high intensity neutrino beam which is an admixture of either $\nu_{\mu}+\bar{\nu_e}$ or $\bar{\nu}_{\mu} +\nu_e$ which can can be directed to underground detectors far away from the source. It will…

High Energy Physics - Phenomenology · Physics 2011-07-19 R. N. Mohapatra

Neutrino telescopes that measure relative fluxes of ultrahigh-energy $\nu_{e}, \nu_{\mu}, \nu_{\tau}$ can give information about the location and characteristics of sources, about neutrino mixing, and can test for neutrino instability and…

High Energy Physics - Phenomenology · Physics 2009-05-05 Gabriela Barenboim , Chris Quigg

The Beta Beam CERN design is based on the present LHC injection complex and its physics reach is mainly limited by the maximum rigidity of the SPS. In fact, some of the scenarios for the machine upgrades of the LHC, particularly the…

High Energy Physics - Phenomenology · Physics 2011-09-13 A. Donini , E. Fernandez-Martinez , P. Migliozzi , S. Rigolin , L. Scotto Lavina , T. Tabarelli de Fatis , F. Terranova

We discuss the neutrino mass hierarchy determination with atmospheric neutrinos in PINGU (Precision IceCube Next Generation Upgrade), based on a simulation with the GLoBES software including the full three flavor framework and parameter…

High Energy Physics - Phenomenology · Physics 2013-08-09 Walter Winter

Collective neutrino flavor transformations deep inside a supernova are sensitive to the neutrino mass hierarchy even at extremely small values of theta(13). Exploiting this effect, we show that comparison of the antineutrino signals from a…

High Energy Physics - Phenomenology · Physics 2008-11-26 Basudeb Dasgupta , Amol Dighe , Alessandro Mirizzi

The determination of the missing $U_{e3}$ element (magnitude and phase) of the PMNS neutrino mixing matrix is possible via the detection of $\numu\to\nue$ oscillations at a baseline $L$ and energy $E$ given by the atmospheric observations,…

High Energy Physics - Phenomenology · Physics 2009-11-11 A. Meregaglia , A. Rubbia

The process of collective de-excitation of atoms in a metastable level into emission mode of a single photon plus a neutrino pair, called radiative emission of neutrino pair (RENP), is sensitive to the absolute neutrino mass scale, to the…

High Energy Physics - Phenomenology · Physics 2015-06-11 D. N. Dinh , S. T. Petcov , N. Sasao , M. Tanaka , M. Yoshimura

We explore how the seesaw sector in neutrino mass models may be constrained through symmetries to be completely determined in terms of low-energy mass, mixing angle and CP-violating phase observables. The key ingredients are intra-family…

High Energy Physics - Phenomenology · Physics 2010-04-15 Xiao-Gang He , Sandy S. C. Law , Raymond R. Volkas

Recent data of reactor neutrino experiments set more stringent constraint on leptonic mixing patterns. We examine all possible patterns on the basis of combinations of elementary correlations of elements of leptonic mixing matrix. we obtain…

High Energy Physics - Phenomenology · Physics 2016-04-28 Shu-jun Rong

The question "how small is the lepton mixing angle \theta_{13}?" had a convincing answer in a surprisingly short time, \theta_{13} \simeq 9^{\circ}, a large value comparable to the Chooz limit. It defines a new epoch in the program of…

High Energy Physics - Phenomenology · Physics 2015-06-11 Hisakazu Minakata

The neutrino masses ordering remains one of the most important open questions in neutrino physics. While upcoming oscillation experiments aim to resolve this problem at low energies, complementary approaches are highly desirable. In this…

High Energy Physics - Phenomenology · Physics 2026-01-16 Wei Liu , Supriya Senapati , Jin Sun

There are three parameter degeneracies inherent in the three--neutrino analysis of long--baseline neutrino experiments. We develop a systematic method for determining whether or not a set of measurements in neutrino oscillation appearance…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. Barger , D. Marfatia , K. Whisnant
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