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Small angle electron scattering with intense electron beams opens up the possibility of performing almost real photon induced reactions with thin, polarized hydrogen and few body targets, allowing for the detection of low energy charged…

Nuclear Experiment · Physics 2015-06-16 A. M. Bernstein

We shall review here our current knowledge and new frontiers of the pion photoproduction study, from threshold through the Delta resonance region, emphasizing the hadron physics program, of interest to a 250 MeV, high duty factor electron…

Nuclear Theory · Physics 2007-05-23 N. C. Mukhopadhyay , R. M. Davidson

We propose a new strategy to search for a particular type of dark matter via nuclear capture. If the dark matter particle carries baryon number, as motivated by a class of theoretical explanations of the matter-antimatter asymmetry of the…

High Energy Physics - Phenomenology · Physics 2020-10-27 Bartosz Fornal , Benjamin Grinstein , Yue Zhao

Photoproduction of neutral pions from nuclei (carbon, calcium, niobium, lead) has been studied for incident photon energies from 200 MeV to 800 MeV with the TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI…

The total hadronic cross-section for the interaction of real photons is extracted from a measurement of the cross-section of the process e+e->e+e- + hadrons using a luminosity function for the photon flux and form factors for extrapolating…

High Energy Physics - Experiment · Physics 2009-10-30 Frank Waeckerle

We investigate the production of hyperons, charmed baryons, and potential hadronic molecular states in neutrino-proton $(\bar{\nu}_\mu p)$ reaction, a process characterized by a particularly clean final state. Employing effective…

High Energy Physics - Phenomenology · Physics 2026-01-01 Kai-sa Qiao , Bing-song Zou

We calculate rates for hybrid meson production by electromagnetic and weak interactions in the flux-tube model. Applications include photo and electroproduction at Jefferson Laboratory and HERA, and the production of light strange and…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. E. Close , J. J. Dudek

Here we develop a new strategy to analyze the chemical freeze-out of light (anti)nuclei produced in high energy collisions of heavy atomic nuclei within an advanced version of the hadron resonance gas model. It is based on two different,…

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

The energy spectrum for high energy $\gamma$-rays ($E_\gamma \geq 10$ MeV) from the process $pp \to \gamma \gamma X$ emitted at $90^0$ in the laboratory frame has been measured at an energy below the pion production threshold, namely, at…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. S. Khrykin

Axionlike particles (ALPs) and dark photons (DPs) are viable dark matter particle candidates. We have searched for possible ALP/DP signals in the PandaX-4T liquid xenon detector using 440 kg$\cdot$yr of data. A binned likelihood fit is…

One kind of particularly interesting pseudoscalar particles, called axion-like particles (ALPs), have rich physical phenomenology at high- and low-energy collider experiments. After discussing most of single production channels of ALP at…

High Energy Physics - Phenomenology · Physics 2022-01-25 Chong-Xing Yue , Hua-Ying Zhang , Han Wang

This paper examines the possibility that hadronic processes produce the >100 MeV photons in the prompt phase of gamma-ray bursts (GRBs) observed by the Fermi-LAT. We calculate analytically the radiation from protons and from secondary…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Patrick Crumley , Pawan Kumar

We apply a microcanonical statistical model to investigate hadron production in pp collisions. The parameters of the model are the energy E and the volume V of the system, which we determine via fitting the average multiplicity of charged…

High Energy Physics - Phenomenology · Physics 2009-11-10 F. M. Liu , J. Aichelin , K. Werner , M. Bleicher

A detailed analysis of transverse momentum spectra of several identified hadrons in high energy collisions within the canonical framework of the statistical model of hadronisation is performed. The study of particle momentum spectra…

High Energy Physics - Phenomenology · Physics 2011-09-13 F. Becattini , G. Passaleva

True muonium, the bound state of a muon and an antimuon, is a theoretically well-understood but experimentally unobserved exotic atom. Its purely leptonic nature makes it a sensitive probe for bound-state quantum electrodynamics and…

High Energy Physics - Experiment · Physics 2026-05-19 Ivo Schulthess , Benjamin Banto Oberhauser , Paolo Crivelli

We present some bottom-up motivations of axions and other weakly interacting sub-eV particles (WISPs) coupling to photons. Typically, these light particles are strongly constrained by their production or interaction in astrophysical and…

High Energy Physics - Phenomenology · Physics 2009-10-13 Markus Ahlers

Pioneering experiments on production of hypernuclei can be performed with nuclotron beams on fixed targets, and at the future NICA facility. The peripheral collisions of relativistic ions are very promising for searching mutli-strange and…

Nuclear Theory · Physics 2013-05-24 A. S. Botvina

We calculate target fragmentation in $p p \to n X$ and $\gamma p \to n X $ reactions in the meson cloud picture of the nucleon. The $p p \to n X$ reaction is used to fix the $pn\pi^+$ form factor for two different models. We take into…

High Energy Physics - Phenomenology · Physics 2007-05-23 U. D'Alesio

The production of strange particles (kaons, hyperons) and hypernuclei in light charged particle induced reactions in the energy range of a few GeV (2-15 GeV) has become a topic of active research in several facilities (e.g., HypHI and PANDA…

Nuclear Theory · Physics 2018-11-06 J. Hirtz , J. -C. David , A. Boudard , J. Cugnon , S. Leray , I. Leya , D. Mancusi