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We investigate coherence length effects and hadron attenuation in lepton scattering off nuclei in the kinematic regime of the HERMES experiment. The elementary electron-nucleon interaction is described within the event generator PYTHIA…

核理论 · 物理学 2007-05-23 T. Falter , U. Mosel

We explore how nuclear modifications to the nucleon parton distributions affect production of high transverse momentum hadrons in deuteron-nucleus collisions. We calculate the charged hadron spectra to leading order using standard…

高能物理 - 唯象学 · 物理学 2009-11-10 R. Vogt

Atomic norm minimization is a convex optimization framework to recover point sources from a subset of their low-pass observations, or equivalently the underlying frequencies of a spectrally-sparse signal. When the amplitudes of the sources…

信息论 · 计算机科学 2021-02-24 Maxime Ferreira Da Costa , Yuejie Chi

Under the assumption that the neutrinos are Majorana particles we study how the lepton mass matrices can be transformed into the simple form which has the same physical quantities by removing redundant parameters. We propose the exact…

高能物理 - 唯象学 · 物理学 2014-11-17 K. Kimura , A. Takamura

We aim to constrain the equation of state of nuclear matter by comparing calculations with the SMASH transport model to directed and elliptic flow measurements for protons and deuterons performed by the HADES collaboration in a systematic…

核理论 · 物理学 2024-09-26 Justin Mohs , Simon Spies , Hannah Elfner

Nucleon properties are modified in the nuclear medium. To understand these modifications and their origin is a central issue in nuclear physics. For example, a wide variety of QCD-based models, including quark-meson coupling and…

核实验 · 物理学 2010-12-21 S. Strauch , S. Malace , M. Paolone

Improved constraints on current model parameters in a heavy-ion collision model are established using the latest measurements from three distinct collision systems. Various observables are utilized from Au--Au collisions at…

高能物理 - 唯象学 · 物理学 2024-11-05 Maxim Virta , Jasper Parkkila , Dong Jo Kim

The double differential multiplicities and rapidity distributions for Lambda hyperon production in central Au+Au interactions at AGS in the range of rapidities from 1.7 to 3.2 and the range of transverse kinetic energies from 0.0 to 0.7 GeV…

核实验 · 物理学 2009-10-31 S. Ahmad , B. E. Bonner , S. V. Efremov , G. S. Mutchler , E. D. Platner , H. W. Themann

Nuclear-polarizability corrections that go beyond unretarded-dipole approximation are calculated analytically for hydrogenic (atomic) S-states. These retardation corrections are evaluated numerically for deuterium and contribute -0.68 kHz,…

核理论 · 物理学 2008-11-26 J. L. Friar , G. L. Payne

Hadron production in lepton-nucleus deep inelastic scattering is studied in an absorption model. In the proposed model, the early stage of hadronization in the nuclear medium is dominated by prehadron formation and absorption, controlled by…

高能物理 - 唯象学 · 物理学 2007-05-23 A. Accardi , D. Grunewald , V. Muccifora , H. J. Pirner

Astrophysical models studying the origin of the p-nuclei require knowledge of the reaction rates of photodisintegrations and capture reactions. Since experimental data at astrophysically relevant energies are limited, reaction rate…

核理论 · 物理学 2021-04-28 E. Vagena , M. Axiotis , P. Dimitriou

We propose a simple fit function, $L_{\nu_i}(t) = C\, t^{-\alpha}\, e^{-(t/\tau)^{n}}$, to parametrize the luminosities of neutrinos and antineutrinos of all flavors during the protoneutron star (PNS) cooling phase at post-bounce times $t…

高能天体物理现象 · 物理学 2024-09-17 Giuseppe Lucente , Malte Heinlein , H. -Thomas Janka , Alessandro Mirizzi

Hamiltonian parameter estimation is crucial in condensed matter physics, but time and cost consuming in terms of resources used. With advances in observation techniques, high-resolution images with more detailed information are obtained,…

无序系统与神经网络 · 物理学 2019-11-15 Dingchen Wang , Songrui Wei , Anran Yuan , Fanghua Tian , Kaiyan Cao , Qizhong Zhao , Dezhen Xue , Sen Yang

This paper presents a novel approach to construct regularizing operators for severely ill-posed Fredholm integral equations of the first kind by introducing parametrized discretization. The optimal values of discretization and…

数值分析 · 数学 2023-09-12 Vladimir V Kryzhniy

We try to constraints some of the nuclear matter parameters such as symmetry energy ($J$) and its slope ($L$) from the recent inferred data of the PREX-2. Other nuclear matter parameters are adopted from {\bf [Phys. Rev. C 85 035201 (2012),…

核理论 · 物理学 2021-09-27 S. K. Biswal , H. C. Das , Ankit Kumar , S. K. Patra

The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep inelastic scattering has been studied by the HERMES experiment at DESY using 27.5 GeV positrons. A substantial reduction of the multiplicity of…

高能物理 - 实验 · 物理学 2019-08-14 Valeria Muccifora

Numerical simulations of neutron star mergers represent an essential step toward interpreting the full complexity of multimessenger observations and constraining the properties of supranuclear matter. Currently, simulations are limited by…

Using a simple geometric framework with a realistic nuclear density distribution, we fit published HERMES data to determine fundamental properties of hadronization using the nuclear medium as a spatial analyzer. Our approach uses a fit to…

高能物理 - 唯象学 · 物理学 2021-06-02 William K. Brooks , Jorge A. López

For the first time, the nuclear attenuation of three hadron systems is studied in neutrino-induced reactions using the data obtained with SKAT bubble chamber. The strongest attenuation (R_3 ~ 0.6) is observed for a system carrying an…

高能物理 - 实验 · 物理学 2011-08-09 N. M. Agababyan , L. Grigorian , N. Grigoryan , H. Gulkanyan , A. A. Ivanilov , Zh. Karamyan , V. A. Korotkov

This study presents a novel optimisation technique for atomic structure calculations using the Flexible Atomic Code, focussing on complex multielectron systems relevant to $r$-process nucleosynthesis and kilonova modelling. We introduce a…