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相关论文: Atomic Parity Nonconservation: Electroweak Paramet…

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Studies of the effects of the weak interaction in atomic systems provide tests of the Standard Model of particle physics, and explore physics scenarios beyond the Standard Model. In addition, these studies can offer valuable insights into…

原子物理 · 物理学 2024-11-21 Stefanos Nanos , Iraklis Papigkiotis , Dionysios Antypas

The quantitative knowledge of heavy nuclei's partonic structure is currently limited to rather large values of momentum fraction $x$ -- robust experimental constraints below $x \sim 10^{-2}$ at low resolution scale $Q^2$ are particularly…

核实验 · 物理学 2017-12-13 E. C. Aschenauer , S. Fazio , M. A. C. Lamont , H. Paukkunen , Pia Zurita

The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. We calculate direct neutron capture on the even-even isotopes $^{124-145}$Sn and $^{208-238}$Pb with energy levels, masses, and…

核理论 · 物理学 2008-11-26 T. Rauscher , R. Bieber , H. Oberhummer , K. -L. Kratz , J. Dobaczewski , P. Moller , M. M. Sharma

Emergent bulk properties of matter governed by the strong nuclear force give rise to physical phenomena across vastly different scales, ranging from the shape of atomic nuclei to the masses and radii of neutron stars. They can be accessed…

核理论 · 物理学 2023-12-04 Giuliano Giacalone , Govert Nijs , Wilke van der Schee

The saturation density of nuclear matter $\rho_0$ is a fundamental nuclear physics property that is difficult to predict from fundamental principles. The saturation density is closely related to the interior density of a heavy nucleus, such…

核理论 · 物理学 2020-10-21 C. J. Horowitz , J. Piekarewicz , Brendan Reed

We investigate how models for neutrino-nucleus cross sections based on different assumptions for the nuclear dynamics affect the forecasted sensitivities to neutrino oscillation parameters at future neutrino facilities. We limit ourselves…

高能物理 - 唯象学 · 物理学 2011-03-07 Enrique Fernandez-Martinez , Davide Meloni

Antiproton-nucleon ($\bar{p}N$) total cross sections are typically 3-4 times larger than the $NN$ ones at incident energies from a few hundreds to thousands MeV. We investigate antiproton-nucleus scattering as it could work as a probe of…

核理论 · 物理学 2020-10-28 K. Makiguchi , W. Horiuchi , A. Kohama

As known, electron vacuum polarization by nuclear Coulomb field produces Uehling potential with the range $\hbar/2m_e c$. Similarly, neutrino vacuum polarization by $Z$ boson field produces long range potential $\sim G^2/r^5$ with the large…

高能物理 - 唯象学 · 物理学 2022-08-31 V. A. Dzuba , V. V. Flambaum , P. Munro-Laylim

$Background:$ The determination of the nuclear neutron properties suffers from uncontrolled uncertainties, which attracted considerable attention recently, such as in the context of the PREX experiment. $Purpose:$ Our aim is to analyze the…

核理论 · 物理学 2022-11-30 Jian Liu , Yunsheng Wang , Yonghao Gao , Pawel Danielewicz , Chang Xu , Zhongzhou Ren

A QCD analysis of the nuclear parton distributions and structure functions in the NLO is performed by using the world data. By having bounded parton distributions for a nuclear with atomic number A, we can obtain the nuclear structure…

高能物理 - 唯象学 · 物理学 2008-11-26 S. Atashbar Tehrani , Ali N. Khorramian

Precision measurements of parity non-conserving (PNC) interactions in atoms, molecules and ions can lead to the discovery of new physics beyond the standard model and understanding of weak-force induced interactions in the nucleus. In this…

原子物理 · 物理学 2018-08-02 J. Choi , R. T. Sutherland , George Toh , A. Damitz , D. S. Elliott

Background: The ground state neutron density of a medium mass nucleus contains fundamental nuclear structure information and is at present relatively poorly known. Purpose: We explore if parity violating elastic electron scattering can…

核理论 · 物理学 2015-07-29 Z. Lin , C. J. Horowitz

The COHERENT collaboration observed coherent elastic neutrino nucleus scattering using a 14.6 kg cesium-iodide (CsI) detector in 2017 and recently published the updated results before decommissioning the detector. Here, we present the…

核实验 · 物理学 2023-08-16 M. Atzori Corona , M. Cadeddu , N. Cargioli , F. Dordei , C. Giunti , G. Masia

Radiative corrections to the parity-violating asymmetry measured in elastic electron-proton scattering are analyzed in the framework of the Standard Model. We include the complete set of one-loop contributions to one quark current…

核理论 · 物理学 2007-05-23 S. Barkanova , A. Aleksejevs , P. G. Blunden

Various estimates of the even-odd effect of the mass shell of atomic nuclei are considered. Based on the experimental mass values of the Ca, Sn, and Pb isotopes, the dependence of the energy gap on the neutrons number is traced and the…

核理论 · 物理学 2017-08-01 B. S. Ishkhanov , S. V. Sidorov , T. Yu. Tretyakova , E. V. Vladimirova

Anapole moments are parity-odd, time-reversal-even moments of the E1 projection of the electromagnetic current. Although it was recognized, soon after the discovery of parity violation in the weak interaction, that elementary particles and…

核理论 · 物理学 2009-11-07 W. C. Haxton , C. E. Wieman

For decades the primary experimental goal in studies of hadronic parity nonconservation (PNC) has been the isolation of the isovector weak nucleon-nucleon interaction, expected to be dominated by long-range pion exchange and enhanced by the…

核理论 · 物理学 2017-10-11 Susan Gardner , W. C. Haxton , Barry R. Holstein

Parameters of nuclear density distributions are derived from least-squares fits to strong interaction observables in exotic atoms. Global analyses of antiprotonic and pionic atoms show reasonably good agreement between the two types of…

核理论 · 物理学 2015-05-13 E. Friedman

The atomic parity-violation (APV) parameter QW for a nucleus with `n' neutrons and `z' protons has been included in the list of pseudo-observables accessible with the codes TOPAZ0 and ZFITTER. In this way one can add the APV results in the…

高能物理 - 唯象学 · 物理学 2009-01-07 D. Bardin , P. Christova , L. Kalinovskaya , Giampiero Passarino

Parity violating elastic electron scattering on neutron-rich nuclei is described in the framework of relativistic mean-field theory. Self-consistent ground state density distributions of Ne, Na, Ni and Sn isotopes are calculated with the…

核理论 · 物理学 2008-11-26 D. Vretenar , P. Finelli , A. Ventura , G. A. Lalazissis , P. Ring