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Differences in the photoproduction of mesons on the free proton and on nuclei are expected to reveal changes in the properties of hadrons. Inclusive studies of nuclear photoabsorption have provided evidence of medium modifications. However,…

Nuclear Experiment · Physics 2022-02-23 S. Schadmand

I give a brief overview of experimental studies of the spectrum and the structure of the excited states of the nucleon and what we learn about their internal structure. The focus is on the effort to obtain a more complete picture of the…

Nuclear Experiment · Physics 2018-05-09 Volker D. Burkert

We derive a complete expression for the neutrino-mediated quantum force beyond the four-Fermi approximation within the Standard Model. Using this new result, we study the effect of atomic parity violation caused by neutrinos. We find that…

High Energy Physics - Phenomenology · Physics 2025-12-19 Mitrajyoti Ghosh , Yuval Grossman , Chinhsan Sieng , Bingrong Yu

We investigate p-wave pion production in nucleon-nucleon collisions up to next-to-next-to-leading order in chiral effective field theory. In particular, we show that it is possible to describe simultaneously the p-wave amplitudes in the…

Nuclear Theory · Physics 2010-10-22 V. Baru , E. Epelbaum , J. Haidenbauer , C. Hanhart , A. E. Kudryavtsev , V. Lensky , U. -G. Meissner

We present the investigation of the neutrino-induced strangeness associated production on nuclei in the relativistic plane wave impulse approximation (RPWIA) framework at the intermediate neutrino energies. In this study, the elementary…

Nuclear Theory · Physics 2011-12-26 G. B. Adera , B. I. S. Van der Ventel

We study $\phi$-meson production in nuclei to investigate the in-medium modification of the $\phi$-meson spectral function at finite density. We consider (${\bar p},\phi$), ($\gamma,p$) and ($\pi^-,n$) reactions to produce a $\phi$-meson…

Nuclear Theory · Physics 2015-05-13 J. Yamagata-Sekihara , S. Hirenzaki , D. Cabrera , M. J. Vicente Vacas

An overview of nuclei and anti-nuclei production with results from different experiments are discussed. The comparison of data with the thermal and coalescence models is also discussed to understand their production mechanisms in high…

High Energy Physics - Experiment · Physics 2018-07-10 Natasha Sharma

We study the impact of the description of the knockout nucleon wave function on electron- and neutrino-induced quasielastic and single-pion production cross sections. We work in a fully relativistic and quantum mechanical framework, where…

In this talk we report on two physical processes, the photoproduction of $\rho$ mesons in nuclei and the $\pi^0 \pi^0$ photoproduction in nuclei at low energies. In the first case the aim is to observe experimentally the theoretically…

Nuclear Theory · Physics 2007-05-23 E. Oset , L. Roca , M. J. Vicente Vacas , J. C. Nacher

Recent studies at Jefferson Lab show that there are a certain proportion of nucleons in nuclei have momenta greater than the so-called nuclear Fermi momentum $p_{F}$. Based on the transport model of nucleus-nucleus collisions at…

Nuclear Theory · Physics 2016-12-20 Gao-Chan Yong

We show theoretical results for $(\gamma, \pi^0 \pi^0)$ production on nucleons and nuclei in the kinematical region where the scalar isoscalar $\pi \pi$ amplitude is influenced by the $\sigma$ pole. The final state interaction of the pions…

Nuclear Theory · Physics 2011-02-09 L. Roca , E. Oset , M. J. Vicente Vacas

The past decade has witnessed tremendous progress in the theoretical and computational tools that produce our understanding of nuclei. A number of microscopic calculations of nuclear electroweak structure and reactions have successfully…

Nuclear Theory · Physics 2018-03-14 Saori Pastore

A variation of the valence electron wave function inside a nucleus induced by a perturbative potential is expressed in terms of the potential momenta. As an application we consider QED vacuum polarization corrections due to the Uehling and…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. Yu. Kuchiev , V. V. Flambaum

The nuclear effects in J/psi hadro- and electroproduction on nuclei are considered in framework of reggeon approach. It is shown that screening regime which holds for electroproduction at x_F > 0.7 and for hadroproduction at x_F >…

High Energy Physics - Phenomenology · Physics 2009-11-10 K. G. Boreskov , A. B. Kaidalov

We argue that nuclei are not transparent for fast projectile partons. Color transparency is effective for final state interactions in heavy particle production, though nuclear filtering of initial partons can reduce the cross sections. We…

Nuclear Theory · Physics 2009-10-28 S. V. Akulinichev

We theoretically investigate the interference effect of high-order harmonics generated from molecules at different alignment angles. It is shown that the interference of the harmonic emissions from molecules aligned at different angles can…

Optics · Physics 2015-02-27 Meiyan Qin , Xiaosong Zhu , Yang Li , Qingbin Zhang , Pengfei Lan , Peixiang Lu

Particle production in equilibrium and nonequilibrium quantum systems is calculated. The effects of the off-shell propagation of nucleons in medium on the particle production are discussed. Comparision to the semiclassical production rate…

Nuclear Theory · Physics 2007-05-23 P. Bozek

Exclusive $\pi^o$ electroproduction from nucleons was first suggested by Ahmad, Goldstein and Liuti for extracting from experimental data the tensor charge, transversity and other quantities related to chiral odd combinations of generalized…

High Energy Physics - Phenomenology · Physics 2013-04-16 Gary R. Goldstein , J. Osvaldo Gonzalez Hernandez , Simonetta Liuti

As the dimensions of a conductor approach the nano-scale, quantum effects will begin to dominate its behavior. This entails the exciting possibility of controlling the conductance of a device by direct manipulation of the electron wave…

Motivated by a recent measurement of proton-proton elastic scattering observables up to 3.0 GeV, we investigate the description of those data within models of the nucleon-nucleon (NN) interaction valid above the pion production threshold.…

Nuclear Theory · Physics 2007-08-30 A. Pricking , Ch. Elster , A. Gardestig , F. Hinterberger , the EDDA collaboration
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