WebFeb 28, 2024 · The most studied production mechanism is dark Bremsstrahlung through a vector mediator. In this work, we explore a complementary source of missing energy-momentum signals: Bremsstrahlung photons can convert to hard vector mesons in exclusive photoproduction processes, which then decay to dark matter or other invisible … WebThe study of the effective masses and widths of light vector mesons ρ, ω, and φ in a nuclear medium, through their production and decay in the collisions of photon, hadron, and heavy-ion beams with nuclear targets, has received considerable attention in recent years (see, for example, Refs. [1–3]). This interest in the in-medium properties was

GlueX - Wikipedia

WebThe vector mesons consisting of light quarks form a nonet. In high energy physics , a vector meson is a meson with total spin 1 and odd parity (usually noted as J P = 1 − ). Vector … WebNear-threshold Photoproduction of ϕ italic-ϕ \phi italic_ϕ Mesons from Deuterium X. Qian Duke University, Durham, North Carolina 27708 Kellogg Radiation Laboratory, California Institute of Technology, California 91125 W. Chen Duke University, Durham, North Carolina 27708 H. Gao Duke University, Durham, North Carolina 27708 K. Hicks Ohio ... godly living in an ungodly world

Photonuclear production of vector mesons in ultra ... - ResearchGate

WebAbstract.We study coherent and incoherent φ-meson photoproduction from nuclei. The available data are analyzed in terms of single- and coupled-channel photoproduction. It is found that the data on coherent photoproduction can be well reproduced within a single-channel optical model and show only little room for ω-φ mixing. These data indicate a … Webinelastic lepton-nucleus scattering at small values of the Bjorken variable x = Q2/2Mv. 1. INTRODUCTION: ... wg and ¢~ are the respective vector meson fields, my are their masses and fy their decay constants (empirically, fp ___ 5.3, f~ _ 15.2 and f¢ ~- 13.4). The current-field identity (4) is the basis of a remarkably successful ... WebMar 20, 2024 · In this paper, we analyze the exclusive vector meson photoproduction in the recent run using xenon ions at energy of 5.44 TeV performed by the Large Hadron Collider. book astro pitch near me