Influence of φ mesons on negative kaons in Ni plus Ni collisions at 1.91A GeV beam energy

被引：18

作者：

Piasecki, K. ^{[1
]}

Herrmann, N. ^{[2
]}

Averbeck, R. ^{[3
]}

Andronic, A. ^{[3
]}

Barret, V. ^{[4
,5
]}

Basrak, Z. ^{[6
]}

Bastid, N. ^{[4
,5
]}

Benabderrahmane, M. L. ^{[2
]}

Berger, M. ^{[7
,8
]}

Buehler, P. ^{[9
]}

Cargnelli, M. ^{[9
]}

Caplar, R. ^{[6
]}

Crochet, P. ^{[4
,5
]}

Czerwiakowa, O. ^{[1
]}

Deppner, I. ^{[2
]}

Dupieux, P. ^{[4
,5
]}

Dzelalija, M. ^{[10
]}

Fabbietti, L. ^{[7
,8
]}

Fodor, Z. ^{[11
]}

Gasik, P. ^{[1
,7
]}

Gasparic, I. ^{[6
]}

Grishkin, Y. ^{[12
]}

Hartmann, O. N. ^{[3
]}

Hildenbrand, K. D. ^{[3
]}

Hong, B. ^{[13
]}

Kang, T. I. ^{[3
,13
]}

Kecskemeti, J. ^{[11
]}

Kim, Y. J. ^{[3
]}

Kirejczyk, M. ^{[1
]}

Kis, M. ^{[3
,6
]}

Koczon, P. ^{[3
]}

Kotte, R. ^{[14
]}

Lebedev, A. ^{[12
]}

Leifels, Y. ^{[3
]}

Le Fevre, A. ^{[3
]}

Liu, J. L. ^{[2
,15
]}

Lopez, X. ^{[4
,5
]}

Manko, V. ^{[16
]}

Marton, J. ^{[9
]}

Matulewicz, T. ^{[1
]}

Muenzer, R. ^{[7
,8
]}

Petrovici, M. ^{[17
]}

Rami, F. ^{[18
,19
]}

Reischl, A. ^{[2
]}

Reisdorf, W. ^{[3
]}

Ryu, M. S. ^{[13
]}

Schmidt, P. ^{[9
]}

Schuettauf, A. ^{[3
]}

Seres, Z. ^{[11
]}

Sikora, B. ^{[1
]}

机构：

[1] Univ Warsaw, Fac Phys, Inst Expt Phys, Warsaw, Poland

[2] Heidelberg Univ, Inst Phys, Heidelberg, Germany

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, Darmstadt, Germany

[4] CNRS, IN2P3, Lab Phys Corpusculaire, Clermont Ferrand, France

[5] Univ Clermont Ferrand, Clermont Ferrand, France

[6] Rudjer Boskovic Inst, Zagreb, Croatia

[7] Tech Univ Munich, Excellence Cluster Univ, Garching, Germany

[8] Tech Univ Munich, Dept Phys, E12, Garching, Germany

[9] Osterre Akad Wissensch, Stefan Meyer Inst Subatomare Phys, Vienna, Austria

[10] Univ Split, Split, Croatia

[11] RMKI, Wigner RCP, Budapest, Hungary

[12] Inst Theoret & Expt Phys, Moscow 117259, Russia

[13] Korea Univ, Seoul, South Korea

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

[15] Harbin Inst Technol, Harbin 150006, Peoples R China

[16] Kurchatov Inst, Natl Res Ctr, Moscow, Russia

[17] Inst Nucl Phys & Engn, Bucharest, Romania

[18] Inst Pluridisciplinaire Hubert Curien, Strasbourg, France

[19] Univ Strasbourg, Strasbourg, France

[20] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[21] Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China

来源：

PHYSICAL REVIEW C | 2015年 / 91卷 / 05期

关键词：

HEAVY-ION COLLISIONS; SIS ENERGIES; NI-58+NI-58 COLLISIONS; STRANGENESS; DETECTOR; FOPI;

D O I：

10.1103/PhysRevC.91.054904

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：

phi and K- mesons from Ni + Ni collisions at the beam energy of 1.91A GeV have been measured by the FOPI spectrometer, with a trigger selecting central and semicentral events amounting to 52% of the total cross section. The phase-space distributions, and the total yield of K-, as well as the kinetic energy distribution and the total yield of f mesons are presented. The phi/K- ratio is found to be 0.44 +/- 0.07 (stat)(-0.10)(+0.16)(syst), meaning that about 22% of K- mesons originate from the decays of f mesons, occurring mostly in vacuum. The inverse slopes of direct kaons are up to about 15 MeV larger than the ones extracted within the one-source model, signaling that a considerable share of gap between the slopes of K+ and K- could be explained by the contribution of f mesons to negative kaons.

引用

页数：8

共 7 条

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Piasecki, K.
Herrmann, N.
Averbeck, R.
Andronic, A.
Barret, V.
Basrak, Z.
Bastid, N.
Benabderrahmane, M. L.
Berger, M.
Buehler, P.
Cargnelli, M.
Aplar, R. C.
Cordier, E.
Crochet, P.
Czerwiakowa, O.
Deppner, I.
Dupieux, P.
Dzelalija, M.
Fabbietti, L.
Fodor, Z.
Gasik, P.
Gasparic, I.
Grishkin, Y.
Hartmann, O. N.
Hildenbrand, K. D.
Hong, B.
Kang, T. I.
Kecskemeti, J.
Kim, Y. J.
Kirejczyk, M.
Kis, M.
Koczon, P.
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Lebedev, A.
Leifels, Y.
Le Fevre, A.
Liu, J. L.
Lopez, X.
Mangiarotti, A.
Manko, V.
Marton, J.
Matulewicz, T.
Merschmeyer, M.
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