Results 21 to 30 of about 27,900 (194)

Measurement of exclusive $$\mathrm {\Upsilon }$$ Υ photoproduction from protons in $$\mathrm {p}$$ p Pb collisions at $$\sqrt{\smash [b]{s_{_{\mathrm {NN}}}}} = 5.02\,\text {TeV} $$ sNN=5.02TeV

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
The exclusive photoproduction of $$\mathrm {\Upsilon }\mathrm {(nS)} $$ Υ(nS) meson states from protons, $$\gamma \mathrm {p} \rightarrow \mathrm {\Upsilon }\mathrm {(nS)} \,\mathrm {p}$$ γp→Υ(nS)p (with $$\mathrm {n}=1,2,3$$ n=1,2,3 ), is studied in ...
A. M. Sirunyan   +2296 more
doaj   +1 more source

The strangeness program at GlueX [PDF]

open access: yesEPJ Web of Conferences, 2022
The GlueX experiment located at Jefferson Lab studies the spectrum of hadrons using photoproduction on a LH2 target in a wide variety of final states. With its detector system capable of measuring neutral and charged final state particles over almost the
Pauli Peter
doaj   +1 more source

The Contribution of Methane Photoproduction to the Oceanic Methane Paradox

open access: yesGeophysical Research Letters, 2020
Although methanogenesis is considered a strictly anaerobic process, oxygen‐replete surface open‐ocean waters are usually supersaturated with methane (CH4), a phenomenon termed the oceanic methane paradox.
Y. Li   +4 more
doaj   +1 more source

Eta and Etaprime Photoproduction on the Nucleon with the Isobar Model EtaMAID2018 [PDF]

open access: yesEPJ Web of Conferences, 2019
The isobar model EtaMAID has been updated with new and high precision data for η and η′ photoproduction on protons and neutrons from MAMI, ELSA, GRAAL and CLAS.
Tiator L.   +9 more
doaj   +1 more source

The impact of final-state interaction on the πΣ photoproduction in the Λ(1405) region [PDF]

open access: yesEPJ Web of Conferences, 2022
It was recently demonstrated [1] that the meson-baryon rescattering in the final state has a major impact on the magnitude and structure of the πΣ mass distributions observed in the γp → K+πΣ photoproduction.
Cieplý Aleš, Bruns Peter C.
doaj   +1 more source

Inelastic photoproduction [PDF]

open access: yesPhysics Letters B, 1995
Inelastic photoproduction of $J/ $ particles at high energies is one of the processes to determine the gluon distribution in the nucleon. We have calculated the QCD radiative corrections to the color-singlet model of this reaction. They are large at moderate photon energies, but decrease with increasing energies.
M. Krämer   +3 more
openaire   +4 more sources

Photoproduction [PDF]

open access: yesAIP Conference Proceedings, 1997
Some selected topics in photoproduction are reviewed. In particular, the focus is on quasi-real photon-proton scattering as measured at HERA. Single & dijet rates and jet profiles are discussed, as are open charm production and inelastic charmonium production.
openaire   +3 more sources

Photoproduction of hidden charm pentaquark states $P_c^+(4380)$ and $P_c^+(4450)$ [PDF]

open access: yes, 2015
We propose to study the pentaquark candidates of $P_c^+(4380)$ and $P_c^+(4450)$ in $J/\psi$ photoproduction and look for further experimental evidence for their nature. Since the photoproduction process does not satisfy the so-called "anomalous triangle
Liu, Xiao-Hai, Wang, Qian, Zhao, Qiang
core   +2 more sources

A Stepwise NaHSO3 Addition Mode Greatly Improves H2 Photoproduction in Chlamydomonas reinhardtii

open access: yesFrontiers in Plant Science, 2018
NaHSO3 addition greatly increases the yield of H2 photoproduction in a unicellular green alga Chlamydomonas reinhardtii through removing O2 and activating hydrogenase but significantly impairs the activity of PSII, an electron source for H2 ...
Lanzhen Wei   +4 more
doaj   +1 more source

Predictions for exclusive $$\varUpsilon $$ Υ photoproduction in ultraperipheral $${\textrm{Pb}}+{\textrm{Pb}}$$ Pb + Pb collisions at the LHC at next-to-leading order in perturbative QCD

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We present predictions for the rapidity-differential cross sections of exclusive $$\varUpsilon $$ Υ photoproduction in ultraperipheral collisions (UPCs) of lead ions at the Large Hadron Collider (LHC).
Kari J. Eskola   +4 more
doaj   +1 more source

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