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Autor:
Alessandro Pilloni, Jannes Nys, Mikhail Mikhasenko, Adam P. Szczepaniak, Vincent Mathieu, César Fernández-Ramírez, Geoffrey C. Fox, A. Jackura
Publikováno v:
PHYSICS LETTERS B
Physics Letters B
Physics Letters B, Vol 774, Iss C, Pp 362-367 (2017)
Physics Letters B
Physics Letters B, Vol 774, Iss C, Pp 362-367 (2017)
We show that, in the Regge limit, beam asymmetries in $\eta$ and $\eta'$ photoproduction are sensitive to hidden strangeness components. Under reasonable assumptions about the couplings we estimate the contribution of the $\phi$ Regge pole, which is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c54331ba26ab2a03e0823279240bb4d3
http://hdl.handle.net/11570/3208540
http://hdl.handle.net/11570/3208540
Autor:
Stephen R. Cotanch, R. Williams
Publikováno v:
Physics Letters B. (3-4):269-275
Using vector meson dominance (VMD), tensor glueball photoproduction cross sections, asymmetries and widths are calculated. The predicted hadronic VV' decays are comparable for different vector meson (V = rho, omega and phi) channels with the omega ph
Publikováno v:
Physics Letters B. (2):86-92
We report on a calculation of the full one-loop weak corrections through the order $\alpha_{\mathrm{S}}^2\alpha_{\mathrm{W}}$ to parton-parton scattering in all possible channels at the Relativistic Heavy Ion Collider (RHIC) running with polarised $p
Publikováno v:
Physics Letters B. (4):276-286
If scale invariance is exact, unparticles are unlikely to be probed in colliders since there are stringent constraints from astrophysics and cosmology. However these constraints are inapplicable if scale invariance is broken at a scale mu >~ 1 GeV. T
Autor:
Zhong-Bo Kang, Leonard Gamberg
Publikováno v:
Physics Letters B. (1):181-188
We study the single transverse spin asymmetry of prompt photon production in high energy proton-proton scattering. We include the contributions from both the direct and fragmentation photons. While the asymmetry for direct photon production receives
Publikováno v:
Physics Letters B
Physics Letters B, 2004, 599, pp.247-252
Physics Letters B, 2004, 599, pp.247-252
We show that definite polarization observables for the simplest electroproduction processes, $\ell+N\to \ell+B(1/2^\pm)+M(0^\pm)$, $B=Y(\Lambda, \Sigma$ or $Y_c$-hyperon, $\Theta^+$-pentaquark) and $M=K$, $\bar{K}$ or $D$, are sensitive to the relati
Autor:
Gary R. Goldstein, Leonard Gamberg
Publikováno v:
Physics Letters B. (5-6):362-368
We consider the leading twist $T$-odd contributions as the dominant source of the $\cos 2\phi$ azimuthal asymmetry in unpolarized $p\bar{p}\to \mu\mu^+ X$ dilepton production in Drell-Yan Scattering. This asymmetry contains information on the distrib
Publikováno v:
Physics Letters B. (3-4):276-284
We consider a sub-leading twist chiral-odd pion fragmentation function and explore its contribution in single pion semi-inclusive electroproduction. We evaluate the single beam-spin azimuthal asymmetry $A_{LU}$ and the double spin asymmetry $A_{LT}$
Publikováno v:
Physics Letters B. (2-3):136-140
The flavor asymmetry of the nucleon sea, i.e., the excess of $d\bar{d}$ quark-antiquark pairs over $u\bar{u}$ ones in the proton can be explained by several different models; therefore, it is a challenge to discriminate these models from each other.