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Many theories beyond the Standard Model postulate short-range modifications to gravity which produce deviations of Newton's gravitational potential from a strict $1/r$ dependence. It is common to analyze experiments searching for these…

The $^{235}$U(n,f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n\_TOF facility, extending the upper limit of the only previous…

核实验 · 物理学 2024-06-17 Alice Manna , Elisa Pirovano , the n\_TOF Collaboration

Using an isospin-dependent transport model, we study the effects of nuclear symmetry energy on two-nucleon correlation functions in heavy ion collisions induced by neutron-rich nuclei. We find that the density dependence of the nuclear…

核理论 · 物理学 2009-11-07 Lie-Wen Chen , Vincenzo Greco , Che Ming Ko , Bao-An Li

We show that chiral symmetry and gauge invariance enforce relations between the short-distance physics that occurs in a number of electroweak and pionic reactions on light nuclei. Within chiral perturbation theory this is manifested via the…

核理论 · 物理学 2008-11-26 A. Gardestig , D. R. Phillips

One-nucleon emission processes induced by photon absorption are studied by considering short-range correlations effects. At energies above the giant resonance region the validity of the direct knock-out model has been tested by comparison…

核理论 · 物理学 2009-11-07 M. Anguiano , G. Co' , A. M. Lallena , S. R. Mokhtar

The properties of neutron star are studied in the framework of relativistic Hartree-Fock (RHF) model with realistic nucleon-nucleon ($NN$) interactions, i.e. Bonn potentials. The strong repulsion of $NN$ interaction at short range is…

核理论 · 物理学 2019-10-28 Ying Zhang , Peng Liu , Jinniu Hu

Using covariance analysis, we quantify the correlations between the interaction parameters in a transport model and the observables commonly used to extract information of the Equation of State of Asymmetric Nuclear Matter in experiments.…

核理论 · 物理学 2015-09-30 Yingxun Zhang , M. B. Tsang , Zhuxia Li

Short range correlated nucleon-nucleon ($NN$) pairs are an important part of the nuclear ground state. They are typically studied by scattering an electron from one nucleon in the pair and detecting its spectator correlated partner…

The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those usually cited in the range between 1 pm and 5…

高能物理 - 唯象学 · 物理学 2008-11-26 V. V. Nesvizhevsky , G. Pignol , K. V. Protasov

The relativistic mean-field models tested in previous works against nuclear matter experimental values, critical parameters and macroscopic stellar properties are revisited and used in the evaluation of the symmetry energy $\gamma$…

核理论 · 物理学 2021-02-16 Mariana Dutra , Odilon Lourenço , Or Hen , Eliezer Piasetzky , Débora P. Menezes

Due to the lack of a free neutron target the structure function of the neutron cannot be measured directly and is therefore extracted from deuteron and proton DIS data. Because the deuteron is a bound nuclear system, in order to extract the…

高能物理 - 唯象学 · 物理学 2011-09-29 O. Hen , E. Piasetzky , R. Shneor , L. B. Weinstein , D. W. Higinbotham

The understanding of few-nucleon systems at low energies is essential, e.g. for accurate predictions of element abundances in big-bang and stellar fusion. Novel effective field theories, taking only nucleons, or nucleons and pions as…

The high energy proton-neutron charge exchange scattering reaction is studied in an effective hadron model for the energy range of s from 45.9 to 414.61 GeV*GeV. The main features of the observed differential cross section, the forward peak…

高能物理 - 唯象学 · 物理学 2007-05-23 Y. Yan , R. Tegen , T. Gutsche , V. E. Lyubovitskij , Amand Faessler

Charged kaon--deuteron interactions offer a sensitive probe of the strangeness sector of QCD at low energy, particularly through their scattering parameters. Despite available theoretical predictions, experimental constraints remain absent,…

核实验 · 物理学 2026-03-06 ALICE Collaboration

One of the major uncertainties in the dense matter equation of state has been the nuclear symmetry energy. The density dependence of the symmetry energy is important in nuclear astrophysics, as it controls the neutronization of matter in…

核理论 · 物理学 2013-07-01 James M. Lattimer , Yeunhwan Lim

The response of the liquid scintillator array Nordball to neutrons in the energy range 1.5 < T_n < 10 MeV has been measured by time of flight using a 252Cf fission source. Fission fragments were detected by means of a thin-film plastic…

仪器与探测器 · 物理学 2009-11-11 A. Reiter

Classes of two-nucleon ($2N$) contact interactions are developed in configuration space at leading order (LO), next-to-leading order (NLO), and next-to-next-to-next-to-leading order (N3LO) by fitting the experimental singlet $np$ scattering…

Neutron production in GeV-scale neutrino interactions is a poorly studied process. We have measured the neutron multiplicities in atmospheric neutrino interactions in the Sudbury Neutrino Observatory experiment and compared them to the…

高能物理 - 实验 · 物理学 2019-06-20 SNO Collaboration , B. Aharmim , S. N. Ahmed , A. E. Anthony , N. Barros , E. W. Beier , A. Bellerive , B. Beltran , M. Bergevin , S. D. Biller , R. Bonventre , K. Boudjemline , M. G. Boulay , B. Cai , E. J. Callaghan , J. Caravaca , Y. D. Chan , D. Chauhan , M. Chen , B. T. Cleveland , G. A. Cox , X. Dai , H. Deng , F. B. Descamps , J. A. Detwiler , P. J. Doe , G. Doucas , P. -L. Drouin , M. Dunford , S. R. Elliott , H. C. Evans , G. T. Ewan , J. Farine , H. Fergani , F. Fleurot , R. J. Ford , J. A. Formaggio , N. Gagnon , K. Gilje , J. TM. Goon , K. Graham , E. Guillian , S. Habib , R. L. Hahn , A. L. Hallin , E. D. Hallman , P. J. Harvey , R. Hazama , W. J. Heintzelman , J. Heise , R. L. Helmer , A. Hime , C. Howard , M. Huang , P. Jagam , B. Jamieson , N. A. Jelley , M. Jerkins , K. J. Keeter , J. R. Klein , L. L. Kormos , M. Kos , A. Kruger , C. Kraus , C. B. Krauss , T. Kutter , C. C. M. Kyba , B. J. Land , R. Lange , J. Law , I. T. Lawson , K. T. Lesko , J. R. Leslie , I. Levine , J. C. Loach , R. MacLellan , S. Majerus , H. B. Mak , J. Maneira , R. D. Martin , A. Mastbaum , N. McCauley , A. B. McDonald , S. R. McGee , M. L. Miller , B. Monreal , J. Monroe , B. G. Nickel , A. J. Noble , H. M. O'Keeffe , N. S. Oblath , C. E. Okada , R. W. Ollerhead , G. D. Orebi Gann , S. M. Oser , R. A. Ott , S. J. M. Peeters , A. W. P. Poon , G. Prior , S. D. Reitzner , K. Rielage , B. C. Robertson , R. G. H. Robertson , M. H. Schwendener , J. A. Secrest , S. R. Seibert , O. Simard , D. Sinclair , J. Singh , P. Skensved , M. Smiley , T. J. Sonley , L. C. Stonehill , G. Tesic , N. Tolich , T. Tsui , R. Van Berg , B. A. VanDevender , C. J. Virtue , B. L. Wall , D. Waller , H. Wan Chan Tseung , D. L. Wark , J. Wendland , N. West , J. F. Wilkerson , J. R. Wilson , T. Winchester , A. Wright , M. Yeh , F. Zhang , K. Zuber

Double-differential cross sections for light charged particle production (up to A=4) were measured in 96 MeV neutron-induced reactions, at TSL laboratory cyclotron in Uppsala (Sweden). Measurements for three targets, Fe, Pb, and U, were…