Nuclear Theory·nucl-th

Thursday·March 25, 2021

14 papers—11 primary·3 cross-listed

12
Double deeply virtual Compton scattering with positron beams at SoLID
S. Zhao🇫🇷 · A. Camsonne🇺🇸 · D. Marchand🇫🇷 · M. Mazouz🇹🇳 · N. Sparveris🇺🇸 · S. Stepanyan🇺🇸 · E. Voutier🇫🇷 · Z. W. Zhao🇺🇸
Double Deeply Virtual Compton Scattering (DDVCS) is the only experimental channel for the determination of the dependence of the Generalized Parton Distributions (GPDs) on both the average and the transferred momentum independently. The physics observables of the electron induced di-muon production reaction $\vv e^{\pm} p \to e^{\pm} p μ^{+} μ^{-}$ off unpolarized hydrogen are discussed. Their measurement with the high luminosity and large acceptance SoLID spectrometer at the Thomas Jefferson National Accelerator Facility, using polarized and unpolarized positron and electron beams at 11 GeV is investigated. This experimental configuration is shown to provide unprecedented access to the GPDs with the determination of the real and imaginary parts of the Compton Form Factor $H$ in an unexplored phase space, and to enable an exploratory investigation of higher twist effects.
↳ nucl-exnucl-thEPJA(2021)·15 citations
13
Magnetic field induced neutrino chiral transport near equilibrium
Naoki Yamamoto🇯🇵 · Di-Lun Yang🇯🇵
Based on the recently formulated chiral radiation transport theory for left-handed neutrinos, we study the chiral transport of neutrinos near thermal equilibrium in core-collapse supernovae. We first compute the near-equilibrium solution of the chiral radiation transport equation under the relaxation time approximation, where the relaxation time is directly derived from the effective field theory of the weak interaction. By using such a solution, we systematically derive analytic expressions for the nonequilibrium corrections of the neutrino energy-momentum tensor and neutrino number current induced by magnetic fields via the neutrino absorption on nucleons. In particular, we find the nonequilibrium neutrino energy current proportional to the magnetic field. We also discuss its phenomenological consequences such as the possible relation to pulsar kicks.
↳ hep-phastro-ph.HEnucl-thPRD(2021)·15 citations
14
Quantum effects on plasma screening for thermonuclear reactions in laser-generated plasmas
David Elsing🇩🇪 · Adriana Pálffy🇩🇪 · Yuanbin Wu🇩🇪
A quantum plasma screening model based on the density matrix formalism is used to investigate theoretically the thermonuclear reactions $^{13}$ C( $α$ , $n$ ) $^{16}$ O and $^{2}$ H( $d$ , $n$ ) $^{3}$ He in laser-generated plasmas over a large range of densities and temperatures. For cold and dense (solid-state density) plasmas, our results show that quantum effects can enhance the plasma screening for thermonuclear reactions up to one order of magnitude compared to the classical case. This result can have impact on nuclear astrophysics predictions, and also may play a role for fusion energy gain prospects. Our simulations allow us to identify the laser-generated plasma experimental setting in which the quantum effects on plasma screening could be confirmed at existing high-intensity laser facilities.
↳ physics.plasm-phnucl-thPRResearch(2022)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE

Double deeply virtual Compton scattering with positron beams at SoLID

Magnetic field induced neutrino chiral transport near equilibrium

Quantum effects on plasma screening for thermonuclear reactions in laser-generated plasmas

Affiliations