Results 111 to 120 of about 8,701 (188)

Exclusive vector meson production at HERMES

EPJ Web of Conferences, 2014
Exclusive electroproduction of vector mesons has been measured on hydrogen and deuterium targets at HERMES using the 27.6 GeV electron/positron beam of HERA. From this process, more information can be obtained about generalized parton distributions (GPDs)
Movsisyan Aram
doaj   +1 more source

Spin rotation effects in diffractive electroproduction of heavy quarkonia

European Physical Journal C: Particles and Fields, 2019
In this work we present for the first time the comprehensive study of the Melosh spin rotation effects in diffractive electroproduction of S-wave heavy quarkonia off a nucleon target. Such a study has been performed within the color dipole approach using,
Michal Krelina, Jan Nemchik, Roman Pasechnik, Jan Čepila   +3 more
doaj   +1 more source

A1 (1070) electroproduction?

Nuclear Physics B, 1973
Abstract A simple estimate of the cross section for electroproduction of the A 1 (1070) meson resonance is presented: it could probably be observed in present experiments. The status of the A 1 and the nature of its coupling to the πϱ system are summarised. A 1 photoproduction and its production in e + e − annihilation are also considered.
openaire   +1 more source

PHOTO- AND ELECTROPRODUCTION OF KAONS [PDF]

Strangeness in Nuclear and Hadronic Systems, 2009
Isobar models for the electromagnetic production of K + and K 0 are discussed with emphasis on the K 0 photoproduction off neutron. Predictions of the models for the K 0 photoproduction on deuteron are compared with the recent data and some properties of the elementary amplitudes are shown.
openaire   +2 more sources

Continuous electroproduction of formate via CO₂ reduction on local symmetry-broken single-atom catalysts. [PDF]

Nat Commun, 2023
Dong J, Liu Y, Pei J, Li H, Ji S, Shi L, Zhang Y, Li C, Tang C, Liao J, Xu S, Zhang H, Li Q, Zhao S.   +13 more
europepmc   +1 more source

Exclusive rho0 electroproduction

, 2007
Exclusive rho0 electroproduction at HERA has been studied with the ZEUS detector, using 120 pb{-1} integrated luminosity, in the kinematic range of photon virtuality of 2 < Q2 < 160 GeV2, and gamma* p center-of-mass energy of 32 < W < 180 GeV.
openaire   +2 more sources

Hard Electroproduction of Vector Mesons [PDF]

Proceedings of the XVI International Workshop on Deep-Inelastic Scattering and Related Topics, 2008
It is reported on a global analysis of hard vector-meson electroproduction which is based on the handbag factorization. The generalized parton distributions are constructed from their forward limits with the help of double distributions and the partonic subprocesses are calculated within the modified perturbative approach.
openaire   +2 more sources

Single-site decorated copper enables energy- and carbon-efficient CO₂ methanation in acidic conditions. [PDF]

Nat Commun, 2023
Fan M, Miao RK, Ou P, Xu Y, Lin ZY, Lee TJ, Hung SF, Xie K, Huang JE, Ni W, Li J, Zhao Y, Ozden A, O'Brien CP, Chen Y, Xiao YC, Liu S, Wicks J, Wang X, Abed J, Shirzadi E, Sargent EH, Sinton D.   +22 more
europepmc   +1 more source

Exclusive vector meson electroproduction at HERA

, 2007
The latest results on exclusive vector meson electroproduction from HERA are reviewed. In particular, the new high-statistics measurements of the rho^0 electroproduction are presented and compared to several models.Comment: 8 pages, 15 figures, talk ...
Levy, Aharon
core  

DVCS at HERMES

EPJ Web of Conferences, 2014
Azimuthal asymmetries in exclusive electroproduction of real photons by the longitudinally polarized HERA positron beam scattering off an unpolarized hydrogen target (ep → epγ) are measured at HERMES.
Etzelmüller Erik
doaj   +1 more source