Photoproduction of charged final states in ultraperipheral collisions and electroproduction at an electron-ion collider

doi:10.1103/PhysRevC.100.024620

	Photoproduction of charged final states in ultraperipheral collisions and electroproduction at an electron-ion collider
	Xie, Ya-Ping1,2 ; Klein, Spencer R.1
刊名	PHYSICAL REVIEW C
	2019-08-21
卷号	100 期号:2 页码:5
ISSN号	2469-9985
DOI	10.1103/PhysRevC.100.024620
通讯作者	Klein, Spencer R.(srklein@lbl.gov)
英文摘要	Ultraperipheral collisions (UPCs) of relativistic ions are an important tool for studying photoproduction at high energies. Vector-meson photoproduction is an important tool for nuclear structure measurements and other applications. A future electron-ion collider (EIC) will allow additional studies, using virtual photons with a wide range of Q(2). We propose a significant expansion of the UPC and EIC photoproduction physics programs to include charged final states which may be produced via Reggeon exchange. We consider two examples: a(2)(+) (1320), which is a conventional qq meson, and the exotic Z(c)(+) (4430) state (modeled here as a tetraquark). The Z(c)(+) (4430) cross section depends on its internal structure, so photoproduction can test whether the Z(c)(+) (4430) is a tetraquark or other exotic object. We calculate the rates and kinematic distributions for gamma p -> X+ n in pA UPCs and ep collisions at an EIC and in UPCs. The rates are large enough for detailed studies of these final states. Because the cross section for Reggeon exchange is largest near threshold, the final-state rapidity distribution depends on the beam energies. At high-energy colliders like the proposed LHeC or pA collisions at the Large Hadron Collider, the final states are produced at far forward rapidities. For lower energy colliders, the systems are produced closer to midrapidity, within reach of central detectors.
资助项目	U.S. Department of Energy, Office of Science, Office of Nuclear Physics[DE-AC02-05CH11231] ; Chinese Academy of Sciences Scholarship Program
WOS关键词	ULTRA-PERIPHERAL COLLISIONS ; MESON ; PHYSICS ; GAMMA
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000482087500004
资助机构	U.S. Department of Energy, Office of Science, Office of Nuclear Physics ; Chinese Academy of Sciences Scholarship Program
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/132892]
专题	中国科学院近代物理研究所
通讯作者	Klein, Spencer R.
作者单位	1.Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Xie, Ya-Ping,Klein, Spencer R.. Photoproduction of charged final states in ultraperipheral collisions and electroproduction at an electron-ion collider[J]. PHYSICAL REVIEW C,2019,100(2):5.
APA	Xie, Ya-Ping,&Klein, Spencer R..(2019).Photoproduction of charged final states in ultraperipheral collisions and electroproduction at an electron-ion collider.PHYSICAL REVIEW C,100(2),5.
MLA	Xie, Ya-Ping,et al."Photoproduction of charged final states in ultraperipheral collisions and electroproduction at an electron-ion collider".PHYSICAL REVIEW C 100.2(2019):5.