Study of the Lambda-Lambda interaction with femtoscopy correlations in pp and p-Pbcollisions at the LHC
文献类型：期刊论文
| 作者 | Acharya, S; Adamova, D; Adhya, SP; Adler, A; Adolfsson, J; Aggarwal, MM; Rinella, GA; Agnello, M; Agrawal, N; Ahammed, Z |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2019 |
| 卷号 | 797页码:- |
| ISSN号 | 0370-2693 |
| 关键词 | EXCHANGE-POTENTIAL APPROACH BARYON-BARYON SCATTERING HEAVY-ION COLLISIONS NUCLEON-NUCLEON HYPERON |
| DOI | 10.1016/j.physletb.2019.134822 |
| 文献子类 | 期刊论文 |
| 英文摘要 | This work presents new constraints on the existence and the binding energy of a possible Lambda-Lambda bound state, the H-dibaryon, derived from Lambda-Lambda femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in pp collisions at root s = 13 TeV and p-Pb collisions at root s(NN) = 5.02 TeV, combined with previously published results from pp collisions at root s = 7 TeV. The Lambda-Lambda scattering parameter space, spanned by the inverse scattering length f(0)(-1) and the effective range d(0), is constrained by comparing the measured Lambda-Lambda correlation function with calculations obtained within the Lednicky model. The data are compatible with hypernuclei results and lattice computations, both predicting a shallow attractive interaction, and permit to test different theoretical approaches describing the Lambda-Lambda interaction. The region in the (f(0)(-1), d(0)) plane which would accommodate a Lambda-Lambda bound state is substantially restricted compared to previous studies. The binding energy of the possible Lambda-Lambda bound state is estimated within an effective-range expansion approach and is found to be B-Lambda Lambda = 3.2(-2.4)(+1.6)(stat)(-1.0)(+1.8)(syst) MeV. (C) 2019 The Author(s). Published by Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32223]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.CAPSS, Kolkata, India; 2.Tech Univ Munich, Phys Dept, Munich, Germany; 3.Politecn Bari, Bari, Italy; 4.Univ Coll Southeast Norway, Tonsberg, Norway; 5.Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab Fdn, Yerevan, Armenia; 6.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine; 7.Bose Inst, Dept Phys, Kolkata, India; 8.Budker Inst Nucl Phys, Novosibirsk, Russia; 9.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA; 10.Cent China Normal Univ, Wuhan, Hubei, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Acharya, S,Adamova, D,Adhya, SP,et al. Study of the Lambda-Lambda interaction with femtoscopy correlations in pp and p-Pbcollisions at the LHC[J]. PHYSICS LETTERS B,2019,797:-. |
| APA | Acharya, S.,Adamova, D.,Adhya, SP.,Adler, A.,Adolfsson, J.,...&Zurlo, N.(2019).Study of the Lambda-Lambda interaction with femtoscopy correlations in pp and p-Pbcollisions at the LHC.PHYSICS LETTERS B,797,-. |
| MLA | Acharya, S,et al."Study of the Lambda-Lambda interaction with femtoscopy correlations in pp and p-Pbcollisions at the LHC".PHYSICS LETTERS B 797(2019):-. |
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来源：上海应用物理研究所
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