Testing of P and CP symmetries with e+e- → J/ψ Λ(Λ)over-bar
文献类型：期刊论文
| 作者 | He, X. G.; Ma, J. P.
|
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2023 |
| 卷号 | 839页码:137834 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2023.137834 |
| 英文摘要 | We propose to test P- and CP-symmetries with the process e(+)e(-) -> J/psi Lambda(Lambda) over bar. The general form of the angular distribution of the process is derived and several observables for the proposed test are introduced. With these observables one can distinguish the effects of P-violations in the production of J/psi from its decay into a pair of Lambda(Lambda) over bar . Numerical estimations for proposed asymmetries of P-violation due to Zexchange in SM are given. Our results show that BESIII has reached the sensitivity to probe these effects. At the proposed super-tau-charm factory with much enhanced luminosity it will be able to test the SM predictions with high precision. CPviolating effect in J/psi Lambda(Lambda) over bar can also be tested. In particular, BESIII data already reached the sensitivity to prove CPviolating effect due to current upper limit of electric dipole moment of Lambda. At the proposed super-tau-charm factory the upper limit can be improved by an order of magnitude. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28088]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.[He, X. G.] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan 2.[He, X. G.] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China 3.[He, X. G.] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China 4.[He, X. G.] Shanghai Jiao Tong Univ, Key Lab Particle Astrophys & Cosmol MOE, Shanghai 200240, Peoples R China 5.[He, X. G.] Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China 6.[He, X. G.] Natl Taiwan Univ, Natl Ctr Theoret Sci, Taipei 10617, Taiwan 7.[Ma, J. P.] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China 8.[Ma, J. P.] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 9.[Ma, J. P.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China 10.[Ma, J. P.] Peking Univ, Ctr Highenergy Phys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, X. G.,Ma, J. P.. Testing of P and CP symmetries with e+e- → J/ψ Λ(Λ)over-bar[J]. PHYSICS LETTERS B,2023,839:137834. |
| APA | He, X. G.,&Ma, J. P..(2023).Testing of P and CP symmetries with e+e- → J/ψ Λ(Λ)over-bar.PHYSICS LETTERS B,839,137834. |
| MLA | He, X. G.,et al."Testing of P and CP symmetries with e+e- → J/ψ Λ(Λ)over-bar".PHYSICS LETTERS B 839(2023):137834. |
入库方式： OAI收割
来源：理论物理研究所
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