Hard exclusive processes involving kaons

Abstract

Hard exclusive electroproduction of kaons as well as the kaon-induced exclusive Drell-Yan process are investigated within the handbag approach which is based on factorization in hard subprocesses and soft generalized parton distributions (GPDs). The kaon-hyperon transition GPDs occurring here, are related to the proton GPDs by flavor symmetry. The latter ones are taken from analyses of pion electroproduction. Like in hard processes involving pions the transversity GPDs play an important role in the processes of interest - the transverse cross sections are larger than (or, for the Drell-Yan process, about equal to) the longitudinal ones. The evolution of the transversity GPDs is taken into account for the first time but, as the analysis reveals, it is a minor effect in the range of photon virtualities of interest. The predictions for the cross sections agree fairly well with the sparse available electroproduction data.

19 pages, 10 figures, using Latex

References in corpus (8)

• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• Determination of the Charged Pion Form Factor at Q2=1.60 and 2.45 (GeV/c)2
• Cross sections for hard exclusive electroproduction of pi+ mesons on a hydrogen target
• Rosenbluth separation of the ${\pi }^0$ electroproduction cross section
• Accessing proton generalized parton distributions and pion distribution amplitudes with the exclusive pion-induced Drell-Yan process at J-PARC
• Separated Kaon Electroproduction Cross Section and the Kaon Form Factor from 6 GeV JLab Data
• Rigorous pion electromagnetic form factor behavior in the space-like region
• Twist-3 contributions to wide-angle photoproduction of pions

Cited by in corpus (5)

• Transition GPDs and exclusive electroproduction of $\pi -\Delta (1232)$ final states
• Exploring Baryon Resonances with Transition Generalized Parton Distributions: Status and Perspectives
• Study of transversity GPDs from pseudoscalar mesons production at EIC of China
• Twist-3 contribution to deeply virtual electroproduction of pions
• Non-diagonal DVCS and transition GPDs: A unified framework for spinless hadron case ${\gamma }^{\ast }\pi \to \gamma \pi \pi$