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We investigate the semi-leptonic decays of $\bar B \to D^{(*)} \ell\bar\nu$ in terms of the Heavy-Quark-Effective-Theory (HQET) parameterization for the form factors, which is described with the heavy quark expansion up to $\mathcal…

High Energy Physics - Phenomenology · Physics 2022-01-25 Syuhei Iguro , Ryoutaro Watanabe

The experimental landscape for the 7Be+p radiative capture reaction is rapidly changing as new high precision data become available. We present an evaluation of existing data, detailing the treatment of systematic errors and discrepancies,…

Nuclear Theory · Physics 2009-11-10 R. H. Cyburt , B. Davids , B. K. Jennings

[Background] Bayesian inference frameworks incorporating multi-messenger astrophysical constraints have recently been applied to covariant density functional (CDF) models to constrain their parameters. Among these, frameworks utilizing CDFs…

Nuclear Theory · Physics 2025-05-23 Jia-Jie Li , Yu Tian , Armen Sedrakian

The solar composition problem has puzzled astrophysicists for more than 20 years. Recent measurements of carbon-nitrogen-oxygen (CNO) neutrinos by the Borexino experiment show a $\sim2\sigma$ tension with the "low-metallicity"…

The $^{10}$B(p,$\alpha_0$)$^7$Be bare nucleus astrophysical S(E)-factor has been measured for the first time at energies from about 100 keV down to about 5 keV by means of the Trojan Horse Method (THM). In this energy region, the…

We present a novel methodology to estimate the ratio of kinetic to gravitational potential energy in core-collapse supernova progenitors and to assess the equation of state (EOS) using gravitational-wave signals from the core-bounce phase…

High Energy Astrophysical Phenomena · Physics 2026-05-07 Emmanuel Avila , Michele Zanolin , Javier M. Antelis , Claudia Moreno

The astrophysical S-factor for $^{16}$O + $^{16}$O is investigated within the adiabatic molecular picture. It very well explains the available experimental data. The collective radial mass causes a pronounced resonant structure in the…

Nuclear Theory · Physics 2009-01-22 Alexis Diaz-Torres , Leandro Romero Gasques , Michael Wiescher

The astrophysical $^{3}{\rm He}(\alpha, \gamma)^{7}{\rm Be}$ and $^{3}{\rm H}(\alpha, \gamma)^{7}{\rm Li}$ direct capture processes are studied in the framework of the two-body model with the potentials of a simple Gaussian form, which…

Nuclear Theory · Physics 2018-03-14 E. M. Tursunov , S. A. Turakulov , A. S. Kadyrov

The astrophysical S-factor for the proton weak capture on 3He is calculated with correlated-hyperspherical-harmonics bound and continuum wave functions corresponding to realistic Hamiltonians consisting of the Argonne v14 or Argonne v18…

Nuclear Theory · Physics 2008-11-26 L. E. Marcucci , R. Schiavilla , M. Viviani , A. Kievsky , S. Rosati , J. F. Beacom

The phase shift analysis for position location of the 2S1/2 resonance at 1,5 MeV was carried out on the basis of the known experimental measurements. Also, the possibility to describe the available experimental data on the astrophysical…

Nuclear Theory · Physics 2014-07-30 S. B. Dubovichenko , N. Burtebaev , A. V. Dzhazairov-Kakhramanov , D. K. Alimov

To determine the energy dependence of fusion cross sections at extremely low energies is crucial for various astrophysical processes. In the previous study by Jiang et al. [Phys. Rev. C75, 015803 (2007)], it was concluded that fusion cross…

Nuclear Theory · Physics 2025-12-23 Kotaro Uzawa , Kouichi Hagino

The unique resonance features in the $^{12}$C+$^{12}$C fusion reaction lead to significant fluctuations in the branching ratio $R_{p/\alpha}=\sigma_p/\sigma_\alpha$, making it difficult to determine the $R_{p/\alpha}$ at astrophysical…

Nuclear Theory · Physics 2026-05-19 Ruojun Yang , Ruiqi Chen , Xiao Fang , Yihua Fan , Xiaodong Tang , Yunju Li , Fengqiao Luo

Our current understanding of interstellar carbon fractionation hinges on the interpretation of astrochemical kinetic models. Yet, the various reactions included carry large uncertainties in their (estimated) rate coefficients, notably those…

Astrophysics of Galaxies · Physics 2021-03-24 C. M. R. Rocha , H. Linnartz

The study of d(d,p)t reaction is very important for the nucleosynthesis in both standard Big Bang and stellar evolution, as well as for the future fusion reactors planning of energy production. The d(d,p)t bare nucleus astrophysical S(E)…

Low energy capture cross sections are calculated within a microscopic many-body approach using an effective Hamiltonian derived from the Argonne V18 potential. The dynamics is treated within Fermionic Molecular Dynamics (FMD) which uses a…

Nuclear Theory · Physics 2011-05-13 Thomas Neff , Hans Feldmeier , Karlheinz Langanke

The astrophysical factor for the proton weak capture on 3He is calculated with correlated-hyperspherical-harmonics bound and continuum wave functions corresponding to a realistic Hamiltonian consisting of the Argonne v18 two-nucleon and…

Nuclear Theory · Physics 2008-11-26 L. E. Marcucci , R. Schiavilla , M. Viviani , A. Kievsky , S. Rosati

We investigate Bayesian chiral effective field theory ($\chi$EFT) uncertainties, which assign a statistical interpretation to equation of state (EOS) distributions near nuclear saturation density, n$_0$, as well as constraints from…

Using results on soft-collinear factorization for inclusive B-meson decay distributions, a systematic study of the partial B->Xs+gamma decay rate with a cut E_gamma<E_0 on photon energy is performed. For values E_0<1.9 GeV the rate can be…

High Energy Physics - Phenomenology · Physics 2009-11-10 Matthias Neubert

We perform a model-independent fit of the short-distance couplings $C_{7,9,10}$ within the Standard Model set of $b\to s\gamma$ and $b\to s\bar\ell\ell$ operators. Our analysis of $B \to K^* \gamma$, $B \to K^{(*)} \bar\ell\ell$ and $B_s…

High Energy Physics - Phenomenology · Physics 2012-08-10 Frederik Beaujean , Christoph Bobeth , Danny van Dyk , Christian Wacker

We focus on empirically measure the p-factor of a homogeneous sample of 29 LMC and 10 SMC Cepheids for which an accurate average LMC/SMC distance were estimated from eclipsing binary systems. We used the SPIPS algorithm, which is an…

Solar and Stellar Astrophysics · Physics 2017-12-06 A. Gallenne , P. Kervella , A. Mérand , G. Pietrzynski , W. Gieren , N. Nardetto , B. Trahin