Λ p interaction studied via femtoscopy in p plus Nb reactions at √sNN=3.18 GeV

被引：25

作者：

Adamczewski-Musch, J. ^{[4
]}

Agakishiev, G. ^{[7
]}

Arnold, O. ^{[9
,10
]}

Atomssa, E. T. ^{[15
]}

Behnke, C. ^{[8
]}

Berger-Chen, J. C. ^{[9
,10
]}

Biernat, J. ^{[3
]}

Blanco, A. ^{[2
]}

Blume, C. ^{[8
]}

Boehmer, M. ^{[10
]}

Bordalo, P. ^{[2
]}

Chernenko, S. ^{[7
]}

Deveaux, C. ^{[11
]}

Dybczak, A. ^{[3
]}

Epple, E. ^{[10
]}

Fabbietti, L. ^{[9
,10
]}

Fateev, O. ^{[7
]}

Fonte, P. ^{[2
,18
]}

Franco, C. ^{[2
]}

Friese, J. ^{[10
]}

Froehlich, I. ^{[8
]}

Galatyuk, T. ^{[5
,19
]}

Garzon, J. A. ^{[17
]}

Gill, K. ^{[8
]}

Golubeva, M. ^{[12
]}

Guber, F. ^{[12
]}

Gumberidze, M. ^{[5
,19
]}

Harabasz, S. ^{[3
]}

Hennino, T. ^{[15
]}

Hlavac, S. ^{[1
]}

Hoehne, C. ^{[11
]}

Holzmann, R. ^{[4
]}

Ierusalimov, A. ^{[7
]}

Ivashkin, A. ^{[12
]}

Jurkovic, M. ^{[10
]}

Kaempfer, B. ^{[6
,20
]}

Karavicheva, T. ^{[12
]}

Kardan, B. ^{[8
]}

Koenig, I. ^{[4
]}

Koenig, W. ^{[4
]}

Kolb, B. W. ^{[4
]}

Korcyl, G. ^{[3
]}

Kornakov, G. ^{[5
]}

Kotte, R. ^{[6
]}

Krasa, A. ^{[16
]}

Krebs, E. ^{[8
]}

Kuc, H. ^{[3
,15
]}

Kugler, A. ^{[16
]}

Kunz, T. ^{[10
]}

Kurepin, A. ^{[12
]}

机构：

[1] Slovak Acad Sci, Inst Phys, Bratislava 84228, Slovakia

[2] LIP Lab Instrumentacao & Fis Expt Particulas, P-3004516 Coimbra, Portugal

[3] Jagiellonian Univ Cracow, Smoluchowski Inst Phys, PL-30059 Krakow, Poland

[4] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany

[5] Tech Univ Darmstadt, D-64269 Darmstadt, Germany

[6] Helmholtz Zentrum Dresden Rossendorf, Inst Strahlenphys, D-01314 Dresden, Germany

[7] Joint Inst Nucl Res, Dubna 141980, Russia

[8] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany

[9] Excellence Cluster Origin & Struct Univ, D-85748 Garching, Germany

[10] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany

[11] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany

[12] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[13] Inst Theoret & Expt Phys, Moscow 117218, Russia

[14] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[15] Univ Paris 11, Inst Phys Nucl UMR 8608, CNRS IN2P3, F-91406 Orsay, France

[16] Czech Acad Sci, Inst Nucl Phys, Rez 25068, Czech Republic

[17] Univ Santiago de Compostela, Fac Fis, LabCAF, Santiago De Compostela 15706, Spain

[18] ISEC Coimbra, Coimbra, Portugal

[19] ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

[20] Tech Univ Dresden, D-01062 Dresden, Germany

[21] Frederick Univ, CY-1036 Nicosia, Cyprus

[22] Univ Turin, Dipartimento Fis, I-10125 Turin, Italy

[23] Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy

来源：

PHYSICAL REVIEW C | 2016年 / 94卷 / 02期

关键词：

HEAVY-ION COLLISIONS; 2-PROTON CORRELATIONS; NUCLEAR; INTERFEROMETRY; HYPERONS; SYSTEM;

D O I：

10.1103/PhysRevC.94.025201

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We report on the first measurement of p Lambda and pp correlations via the femtoscopy method in p + Nb reactions at root sNN = 3.18 GeV, studied with the High Acceptance Di-Electron Spectrometer (HADES). By comparing the experimental correlation function to model calculations, a source size for pp pairs of r(0,pp) = 2.02 +/- 0.01(stat)(-0.12)(+0.11)(sys) fm and a slightly smaller value for p Lambda pairs of r(0,Lambda p) = 1.62 +/- 0.02(stat)(-0.08)(+0.19)(sys) fm are extracted. Using the geometrical extent of the particle-emitting region, determined experimentally with pp correlations as reference together with a source function from a transport model, it is possible to study different sets of scattering parameters. The p Lambda correlation is proven to be sensitive to predicted scattering length values from chiral effective field theory. We demonstrate that the femtoscopy technique can be used as a valid alternative to the analysis of scattering data to study the hyperon-nucleon interaction.

引用

页数：12

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