p-p, p-Lambda, and Lambda-Lambda correlations studied via femtoscopy in pp reactions at root s=7 TeV
文献类型：期刊论文
| 作者 | Acharya, S; Adamova, D; Adolfsson, J; Aggarwal, MM; Rinella, GA; Agnello, M; Agrawal, N; Ahammed, Z; Ahn, SU; Aiola, S |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2019 |
| 卷号 | 99期号:2页码:— |
| ISSN号 | 2469-9985 |
| 关键词 | HEAVY-ION COLLISIONS EXCHANGE-POTENTIAL APPROACH BARYON-BARYON SCATTERING SIGMA(0) PRODUCTION NUCLEON-NUCLEON HYPERON STATE INTERFEROMETRY PARTICLES SYSTEM |
| DOI | 10.1103/PhysRevC.99.024001 |
| 文献子类 | 期刊论文 |
| 英文摘要 | We report on the first femtoscopic measurement of baryon pairs, such as p-p, p-Lambda, and Lambda-Lambda, measured by ALICE at the Large Hadron Collider (LHC) in proton-proton collisions at root s = 7 TeV. This study demonstrates the feasibility of such measurements in pp collisions at ultrarelativistic energies. The femtoscopy method is employed to constrain the hyperon-nucleon and hyperon-hyperon interactions, which are still rather poorly understood. A new method to evaluate the influence of residual correlations induced by the decays of resonances and experimental impurities is hereby presented. The p-p, p-Lambda, and Lambda-Lambda correlation functions were fitted simultaneously with the help of a new tool developed specifically for the femtoscopy analysis in small colliding systems: Correlation Analysis Tool using the Schrodinger equation (CATS). Within the assumption that in pp collisions the three particle pairs originate from a common source, its radius is found to be equal to r(0) = 1.125 +/- 0.018 (stat)(-0.035)(+0.058) (syst) fm. The sensitivity of the measured p-Lambda correlation is tested against different scattering parameters, which are defined by the interaction among the two particles, but the statistics is not sufficient yet to discriminate among different models. The measurement of the Lambda-Lambda correlation function constrains the phase space spanned by the effective range and scattering length of the strong interaction. Discrepancies between the measured scattering parameters and the resulting correlation functions at LHC and RHIC energies are discussed in the context of various models. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31763]  |
| 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.Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba; 2.Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, Mexico; 3.Ctr Invest & Estudios Avanzados CINVESTAV, Merida, Venezuela; 4.Ctr Fermi, Museo Stor Fis, Rome, Italy; 5.Ctr Ric Enrico Fermi, Rome, Italy; 6.Chicago State Univ, Chicago, IL USA; 7.China Inst Atom Energy, Beijing, Peoples R China; 8.Chonbuk Natl Univ, Jeonju, South Korea; 9.Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia; 10.CIIT Ctr Hlth Res, Islamabad, Pakistan; |
| 推荐引用方式 GB/T 7714 | Acharya, S,Adamova, D,Adolfsson, J,et al. p-p, p-Lambda, and Lambda-Lambda correlations studied via femtoscopy in pp reactions at root s=7 TeV[J]. PHYSICAL REVIEW C,2019,99(2):—. |
| APA | Acharya, S.,Adamova, D.,Adolfsson, J.,Aggarwal, MM.,Rinella, GA.,...&Zou, S.(2019).p-p, p-Lambda, and Lambda-Lambda correlations studied via femtoscopy in pp reactions at root s=7 TeV.PHYSICAL REVIEW C,99(2),—. |
| MLA | Acharya, S,et al."p-p, p-Lambda, and Lambda-Lambda correlations studied via femtoscopy in pp reactions at root s=7 TeV".PHYSICAL REVIEW C 99.2(2019):—. |
入库方式： OAI收割
来源：上海应用物理研究所
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