Photoproduction of P-wave doubly charmed baryon at future e+e− collider

IF 5 1区 物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS Journal of High Energy Physics Pub Date : 2023-11-06 DOI:10.1007/jhep11(2023)029
Xi-Jie Zhan, Xing-Gang Wu, Xu-Chang Zheng
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Abstract

A bstract The photoproduction of P -wave doubly charmed baryon (Ξ cc ) is investigated in the context of future high-energy and high-luminosity e + e − colliders. The direct photoproduction via the sub-process $$ \gamma +\gamma \to {\Xi}_{cc}+\overline{c}+\overline{c} $$ γ + γ Ξ cc + c ¯ + c ¯ and the resolved channel $$ \gamma +g\to {\Xi}_{cc}+\overline{c}+\overline{c} $$ γ + g Ξ cc + c ¯ + c ¯ are considered. Within the framework of non-relativistic QCD, the calculation encompasses four P -wave ( cc )-diquark configurations: $$ {(cc)}_{\overline{\textbf{3}}} $$ cc 3 ¯ [ 1 P 1 ], ( cc ) 6 [ 3 P 0 ], ( cc ) 6 [ 3 P 1 ] and ( cc ) 6 [ 3 P 2 ]. The two S -wave states, $$ {(cc)}_{\overline{\textbf{3}}} $$ cc 3 ¯ [ 3 S 1 ] and ( cc ) 6 [ 1 S 0 ], are also included for comparison. The cross sections, as well as the differential distributions involving transverse momentum, rapidity, and angular variables, have been computed. Numerical results reveal that the resolved photoproduction process plays a significant role and can provide dominant contributions. The photoproduction rate of the P -wave Ξ cc is approximately one order of magnitude lower than that of the S -wave.
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未来e+e -对撞机p波双粲重子的光产生
在未来高能高亮度e + e−对撞机的背景下,研究了P波双粲重子(Ξ cc)的光产生。考虑了通过子过程$$ \gamma +\gamma \to {\Xi}_{cc}+\overline{c}+\overline{c} $$ γ + γ→Ξ cc + c¯+ c¯和解析通道$$ \gamma +g\to {\Xi}_{cc}+\overline{c}+\overline{c} $$ γ + g→Ξ cc + c¯+ c¯的直接光生产。在非相对论性QCD的框架内,计算包括四种P波(cc)-双夸克构型:$$ {(cc)}_{\overline{\textbf{3}}} $$ cc 3¯[1 p1], (cc) 6 [3 p1], (cc) 6 [3 p2]和(cc) 6 [3 p2]。两种S波状态,$$ {(cc)}_{\overline{\textbf{3}}} $$ cc 3¯[3 S 1]和(cc) 6 [1 S 0],也包括在其中进行比较。横截面,以及微分分布涉及横向动量,速度,和角变量,已经计算。数值结果表明,分辨光产生过程起着重要的作用,可以提供主导的贡献。P波Ξ cc的光产生率比S波的光产生率大约低一个数量级。
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来源期刊
Journal of High Energy Physics
Journal of High Energy Physics PHYSICS, PARTICLES & FIELDS-
CiteScore
10.00
自引率
46.30%
发文量
2107
审稿时长
12 weeks
期刊介绍: The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).
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