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Relativistic exchange current corrections to neutrino--nucleus cross sections are presented assuming non--vanishing strange quark form factors for the constituent nucleons. For charged current processes the exchange current corrections can…

Nuclear Theory · Physics 2009-10-28 Y. Umino , J. M. Udias , P. J. Mulders

The beta-decay log ft values for 210 215Pb 210 215Bi and 210 215Bi 210 215Po transitions in the north east region of 208Pb nuclei are estimated using the proton neutron quasiparticle random phase approximation model. The pn-QRPA equations…

Nuclear Theory · Physics 2024-09-20 Necla Cakmak , Jameel-Un Nabi , Arslan Mehmood , Asim Ullah , Rubba Tahir

The neutrino parameters determined from the solar neutrino data and the anti-neutrino parameters determined from KamLAND reactor experiment are in good agreement with each other. However, the best fit points of the two sets differ from each…

High Energy Physics - Phenomenology · Physics 2011-01-25 Bipin Singh Koranga , Mohan Narayan , and S. Uma Sankar

Recent reactor neutrino experiments observe an anomalous excess around 5 MeV in the prompt energy spectra of positrons following the inverse beta decay reaction. In this note we suggest that this 5 MeV anomaly was already present in a much…

High Energy Physics - Experiment · Physics 2018-07-10 V. Zacek , G. Zacek , P. Vogel , J. -L. Vuilleumier

The atomic recoil effect leads to large (25 %) asymmetries in simple spectroscopic investigations of Ca atoms that have been laser-cooled to 10 microkelvin. Starting with spectra from the more familiar Doppler-broadened domain, we show how…

Atomic Physics · Physics 2009-11-10 C. W. Oates , G. Wilpers , L. Hollberg

Numerical Monte Carlo simulations of the diffusive shock acceleration in the test particle limit are investigated. We simulate high relativistic flow astrophysical plasmas for upstream $\gamma$ $\sim5$ and up to $\gamma$ $\sim1000$. These…

Astrophysics · Physics 2007-05-23 Athina Meli , John Quenby

According to different effects on neutrino oscillations, the unitarity violation in the MNSP matrix can be classified into the direct unitarity violation and the indirect unitarity violation which are induced by the existence of the light…

High Energy Physics - Phenomenology · Physics 2015-12-09 Shu Luo

Laser cooling and trapping offers the possibility of confining a sample of radioactive atoms in free space. Here, we address the question of how best to take advantage of cold atom properties to perform the observation of as highly…

Atomic Physics · Physics 2009-11-10 S. Sanguinetti , J. Guéna , M. Lintz , Ph. Jacquier , A. Wasan , M-A. Bouchiat

We apply the model of stimulated neutrino transitions to neutrinos traveling through turbulence on a non-constant density profile. We describe a method to predict the location of large amplitude transitions and demonstrate the effectiveness…

High Energy Physics - Phenomenology · Physics 2015-01-14 Kelly M. Patton , James P. Kneller , Gail C. McLaughlin

We demonstrate that the results of the complete first order calculation of the non-factorizable QED corrections to the single-inclusive cross-sections for $e^+e^- \to W^+W^- \to 4$ fermions could be very well reproduced by a simple…

High Energy Physics - Phenomenology · Physics 2011-09-13 A. P. Chapovsky , V. A. Khoze

Controlling the spectral norm of the Jacobian matrix, which is related to the convolution operation, has been shown to improve generalization, training stability and robustness in CNNs. Existing methods for computing the norm either tend to…

Machine Learning · Computer Science 2024-09-19 Ekaterina Grishina , Mikhail Gorbunov , Maxim Rakhuba

Motivated by a recent change in viewing the onset of the extra-galactic component in the cosmic ray spectrum, we have fitted the observed data down to $10^{8.6}$ GeV and have obtained the corresponding power emissivity. This transition…

Existence of hypothetical fourth neutrino, so-called sterile neutrino, is one of open issues in the particle and neutrino physics. This fourth neutrino is a candidate for explaining some anomalies reported in LSND, MiniBoone, reactor…

Instrumentation and Detectors · Physics 2018-09-26 Jae Won Shin , Myung-Ki Cheoun , Toshitaka Kajino , Takehito Hayakawa

The evolution of the reactor antineutrino spectrum toward equilibrium above the inverse beta-decay threshold during the reactor operating period and the decay of residual antineutrino radiation after reactor shutdown are considered. It is…

High Energy Physics - Phenomenology · Physics 2011-08-11 V. I. Kopeikin , L. A. Mikaelyan , V. V. Sinev

A search for inverse beta decay electron antineutrinos has been carried out using the 825 days sample of solar data obtained at SK. The absence of a significant signal, that is, contributions to the total SK background and their angular…

High Energy Physics - Phenomenology · Physics 2009-10-31 E. Torrente-Lujan

In this work, the large-scale shell-model calculations for $\beta$-decay properties have been done. The $\beta$-delayed $\gamma$-ray spectroscopy has been performed recently at ILL, Grenoble [M. Si \textit{et al.}, Phys. Rev. C {\bf 106},…

Nuclear Theory · Physics 2023-01-27 Shweta Sharma , Praveen C. Srivastava , Anil Kumar

Monte Carlo (MC) simulations are used to compute the centrality dependence of the collision zone eccentricities ($\epsilon_{2,4}$), for both spherical and deformed ground state nuclei, for different model scenarios. Sizable model dependent…

Nuclear Experiment · Physics 2014-11-20 Roy A. Lacey , Rui Wei , N. N. Ajitanand , J. M. Alexander , X. Gong , J. Jia , A. Taranenko , R. Pak , Horst Stocker

We revisit the reactor antineutrino anomaly using the recent reactor flux independent determination of sizable theta?13 by considering the full set of the absolute reactor electron antineutrino flux measurements. When normalized to the…

Nuclear Experiment · Physics 2013-05-08 C. Zhang , X. Qian , P. Vogel