Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV

G. Agakishiev; A. Balanda; R. Bassini; D. Belver; A. V. Belyaev; A. Blanco; M. Böhmer; J. L. Boyard; P. Braun-Munzinger; P. Cabanelas; E. Castro; S. Chernenko; T. Christ; M. Destefanis; J. Díaz; F. Dohrmann; A. Dybczak; T. Eberl; L. Fabbietti; O. V. Fateev; P. Finocchiaro; P. Fonte; J. Friese; I. Fröhlich; T. Galatyuk; J. A. Garzón; R. Gernhäuser; A. Gil; C. Gilardi; M. Golubeva; D. González-Díaz; F. Guber; T. Hennino; R. Holzmann; I. Iori; A. Ivashkin; M. Jurkovic; B. Kämpfer; K. Kanaki; T. Karavicheva; D. Kirschner; I. Koenig; W. Koenig; B. W. Kolb; R. Kotte; F. Krizek; R. Krücken; W. Kühn; A. Kugler; A. Kurepin; S. Lang; J. S. Lange; K. Lapidus; T. Liu; L. Lopes; M. Lorenz; L. Maier; A. Mangiarotti; J. Markert; V. Metag; B. Michalska; J. Michel; D. Mishra; E. Morinière; J. Mousa; C. Müntz; L. Naumann; J. Otwinowski; Y. C. Pachmayer; M. Palka; Y. Parpottas; V. Pechenov; O. Pechenova; J. Pietraszko; W. Przygoda; B. Ramstein; A. Reshetin; M. Roy-Stephan; A. Rustamov; A. Sadovsky; B. Sailer; P. Salabura; A. Schmah; Yu G. Sobolev; S. Spataro; B. Spruck; H. Ströbele; J. Stroth; C. Sturm; M. Sudol; A. Tarantola; K. Teilab; P. Tlusty; M. Traxler; R. Trebacz; H. Tsertos; V. Wagner; M. Weber; M. Wisniowski; T. Wojcik; J. Wüstenfeld; S. Yurevich; Y. V. Zanevsky; P. Zhou; P. Zumbruch

doi:10.1103/PhysRevLett.103.132301

Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV

G. Agakishiev, A. Balanda, R. Bassini, D. Belver, A. V. Belyaev, A. Blanco, M. Böhmer, J. L. Boyard, P. Braun-Munzinger, P. Cabanelas, E. Castro, S. Chernenko, T. Christ, M. Destefanis, J. Díaz, F. Dohrmann, A. Dybczak, T. Eberl, L. Fabbietti, O. V. FateevP. Finocchiaro, P. Fonte, J. Friese, I. Fröhlich, T. Galatyuk, J. A. Garzón, R. Gernhäuser, A. Gil, C. Gilardi, M. Golubeva, D. González-Díaz, F. Guber, T. Hennino, R. Holzmann, I. Iori, A. Ivashkin, M. Jurkovic, B. Kämpfer, K. Kanaki, T. Karavicheva, D. Kirschner, I. Koenig, W. Koenig, B. W. Kolb, R. Kotte, F. Krizek, R. Krücken, W. Kühn, A. Kugler, A. Kurepin, S. Lang, J. S. Lange, K. Lapidus, T. Liu, L. Lopes, M. Lorenz, L. Maier, A. Mangiarotti, J. Markert, V. Metag, B. Michalska, J. Michel, D. Mishra, E. Morinière, J. Mousa, C. Müntz, L. Naumann, J. Otwinowski, Y. C. Pachmayer, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, J. Pietraszko, W. Przygoda, B. Ramstein, A. Reshetin, M. Roy-Stephan, A. Rustamov, A. Sadovsky, B. Sailer, P. Salabura, A. Schmah, Yu G. Sobolev, S. Spataro, B. Spruck, H. Ströbele, J. Stroth, C. Sturm, M. Sudol, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, R. Trebacz, H. Tsertos, V. Wagner, M. Weber, M. Wisniowski, T. Wojcik, J. Wüstenfeld, S. Yurevich, Y. V. Zanevsky, P. Zhou, P. Zumbruch

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

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Abstract

We report first results on a deep subthreshold production of the doubly strange hyperon Ξ- in a heavy-ion reaction. At a beam energy of 1.76AGeV the reaction Ar+KCl was studied with the High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Λ sample was collected, allowing for the investigation of the decay channel Ξ-→Λπ-. The deduced Ξ-/(Λ+Σ0) production ratio of (5.6±1.2-1.7+1. 8)×10-3 is significantly larger than available model predictions.

Original language	English
Article number	132301
Journal	Physical Review Letters
Volume	103
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.103.132301
State	Published - 23 Sep 2009

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10.1103/PhysRevLett.103.132301

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Agakishiev, G., Balanda, A., Bassini, R., Belver, D., Belyaev, A. V., Blanco, A., Böhmer, M., Boyard, J. L., Braun-Munzinger, P., Cabanelas, P., Castro, E., Chernenko, S., Christ, T., Destefanis, M., Díaz, J., Dohrmann, F., Dybczak, A., Eberl, T., Fabbietti, L., ... Zumbruch, P. (2009). Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV. Physical Review Letters, 103(13), Article 132301. https://doi.org/10.1103/PhysRevLett.103.132301

@article{e20f410c4296495387bf15ea84c46b60,

title = "Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV",

abstract = "We report first results on a deep subthreshold production of the doubly strange hyperon Ξ- in a heavy-ion reaction. At a beam energy of 1.76AGeV the reaction Ar+KCl was studied with the High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Λ sample was collected, allowing for the investigation of the decay channel Ξ-→Λπ-. The deduced Ξ-/(Λ+Σ0) production ratio of (5.6±1.2-1.7+1. 8)×10-3 is significantly larger than available model predictions.",

author = "G. Agakishiev and A. Balanda and R. Bassini and D. Belver and Belyaev, {A. V.} and A. Blanco and M. B{\"o}hmer and Boyard, {J. L.} and P. Braun-Munzinger and P. Cabanelas and E. Castro and S. Chernenko and T. Christ and M. Destefanis and J. D{\'i}az and F. Dohrmann and A. Dybczak and T. Eberl and L. Fabbietti and Fateev, {O. V.} and P. Finocchiaro and P. Fonte and J. Friese and I. Fr{\"o}hlich and T. Galatyuk and Garz{\'o}n, {J. A.} and R. Gernh{\"a}user and A. Gil and C. Gilardi and M. Golubeva and D. Gonz{\'a}lez-D{\'i}az and F. Guber and T. Hennino and R. Holzmann and I. Iori and A. Ivashkin and M. Jurkovic and B. K{\"a}mpfer and K. Kanaki and T. Karavicheva and D. Kirschner and I. Koenig and W. Koenig and Kolb, {B. W.} and R. Kotte and F. Krizek and R. Kr{\"u}cken and W. K{\"u}hn and A. Kugler and A. Kurepin and S. Lang and Lange, {J. S.} and K. Lapidus and T. Liu and L. Lopes and M. Lorenz and L. Maier and A. Mangiarotti and J. Markert and V. Metag and B. Michalska and J. Michel and D. Mishra and E. Morini{\`e}re and J. Mousa and C. M{\"u}ntz and L. Naumann and J. Otwinowski and Pachmayer, {Y. C.} and M. Palka and Y. Parpottas and V. Pechenov and O. Pechenova and J. Pietraszko and W. Przygoda and B. Ramstein and A. Reshetin and M. Roy-Stephan and A. Rustamov and A. Sadovsky and B. Sailer and P. Salabura and A. Schmah and Sobolev, {Yu G.} and S. Spataro and B. Spruck and H. Str{\"o}bele and J. Stroth and C. Sturm and M. Sudol and A. Tarantola and K. Teilab and P. Tlusty and M. Traxler and R. Trebacz and H. Tsertos and V. Wagner and M. Weber and M. Wisniowski and T. Wojcik and J. W{\"u}stenfeld and S. Yurevich and Zanevsky, {Y. V.} and P. Zhou and P. Zumbruch",

year = "2009",

month = sep,

day = "23",

doi = "10.1103/PhysRevLett.103.132301",

language = "English",

volume = "103",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "13",

}

Agakishiev, G, Balanda, A, Bassini, R, Belver, D, Belyaev, AV, Blanco, A, Böhmer, M, Boyard, JL, Braun-Munzinger, P, Cabanelas, P, Castro, E, Chernenko, S, Christ, T, Destefanis, M, Díaz, J, Dohrmann, F, Dybczak, A, Eberl, T, Fabbietti, L, Fateev, OV, Finocchiaro, P, Fonte, P, Friese, J, Fröhlich, I, Galatyuk, T, Garzón, JA, Gernhäuser, R, Gil, A, Gilardi, C, Golubeva, M, González-Díaz, D, Guber, F, Hennino, T, Holzmann, R, Iori, I, Ivashkin, A, Jurkovic, M, Kämpfer, B, Kanaki, K, Karavicheva, T, Kirschner, D, Koenig, I, Koenig, W, Kolb, BW, Kotte, R, Krizek, F, Krücken, R, Kühn, W, Kugler, A, Kurepin, A, Lang, S, Lange, JS, Lapidus, K, Liu, T, Lopes, L, Lorenz, M, Maier, L, Mangiarotti, A, Markert, J, Metag, V, Michalska, B, Michel, J, Mishra, D, Morinière, E, Mousa, J, Müntz, C, Naumann, L, Otwinowski, J, Pachmayer, YC, Palka, M, Parpottas, Y, Pechenov, V, Pechenova, O, Pietraszko, J, Przygoda, W, Ramstein, B, Reshetin, A, Roy-Stephan, M, Rustamov, A, Sadovsky, A, Sailer, B, Salabura, P, Schmah, A, Sobolev, YG, Spataro, S, Spruck, B, Ströbele, H, Stroth, J, Sturm, C, Sudol, M, Tarantola, A, Teilab, K, Tlusty, P, Traxler, M, Trebacz, R, Tsertos, H, Wagner, V, Weber, M, Wisniowski, M, Wojcik, T, Wüstenfeld, J, Yurevich, S, Zanevsky, YV, Zhou, P & Zumbruch, P 2009, 'Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV', Physical Review Letters, vol. 103, no. 13, 132301. https://doi.org/10.1103/PhysRevLett.103.132301

TY - JOUR

T1 - Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV

AU - Agakishiev, G.

AU - Balanda, A.

AU - Bassini, R.

AU - Belver, D.

AU - Belyaev, A. V.

AU - Blanco, A.

AU - Böhmer, M.

AU - Boyard, J. L.

AU - Braun-Munzinger, P.

AU - Cabanelas, P.

AU - Castro, E.

AU - Chernenko, S.

AU - Christ, T.

AU - Destefanis, M.

AU - Díaz, J.

AU - Dohrmann, F.

AU - Dybczak, A.

AU - Eberl, T.

AU - Fabbietti, L.

AU - Fateev, O. V.

AU - Finocchiaro, P.

AU - Fonte, P.

AU - Friese, J.

AU - Fröhlich, I.

AU - Galatyuk, T.

AU - Garzón, J. A.

AU - Gernhäuser, R.

AU - Gil, A.

AU - Gilardi, C.

AU - Golubeva, M.

AU - González-Díaz, D.

AU - Guber, F.

AU - Hennino, T.

AU - Holzmann, R.

AU - Iori, I.

AU - Ivashkin, A.

AU - Jurkovic, M.

AU - Kämpfer, B.

AU - Kanaki, K.

AU - Karavicheva, T.

AU - Kirschner, D.

AU - Koenig, I.

AU - Koenig, W.

AU - Kolb, B. W.

AU - Kotte, R.

AU - Krizek, F.

AU - Krücken, R.

AU - Kühn, W.

AU - Kugler, A.

AU - Kurepin, A.

AU - Lang, S.

AU - Lange, J. S.

AU - Lapidus, K.

AU - Liu, T.

AU - Lopes, L.

AU - Lorenz, M.

AU - Maier, L.

AU - Mangiarotti, A.

AU - Markert, J.

AU - Metag, V.

AU - Michalska, B.

AU - Michel, J.

AU - Mishra, D.

AU - Morinière, E.

AU - Mousa, J.

AU - Müntz, C.

AU - Naumann, L.

AU - Otwinowski, J.

AU - Pachmayer, Y. C.

AU - Palka, M.

AU - Parpottas, Y.

AU - Pechenov, V.

AU - Pechenova, O.

AU - Pietraszko, J.

AU - Przygoda, W.

AU - Ramstein, B.

AU - Reshetin, A.

AU - Roy-Stephan, M.

AU - Rustamov, A.

AU - Sadovsky, A.

AU - Sailer, B.

AU - Salabura, P.

AU - Schmah, A.

AU - Sobolev, Yu G.

AU - Spataro, S.

AU - Spruck, B.

AU - Ströbele, H.

AU - Stroth, J.

AU - Sturm, C.

AU - Sudol, M.

AU - Tarantola, A.

AU - Teilab, K.

AU - Tlusty, P.

AU - Traxler, M.

AU - Trebacz, R.

AU - Tsertos, H.

AU - Wagner, V.

AU - Weber, M.

AU - Wisniowski, M.

AU - Wojcik, T.

AU - Wüstenfeld, J.

AU - Yurevich, S.

AU - Zanevsky, Y. V.

AU - Zhou, P.

AU - Zumbruch, P.

PY - 2009/9/23

Y1 - 2009/9/23

N2 - We report first results on a deep subthreshold production of the doubly strange hyperon Ξ- in a heavy-ion reaction. At a beam energy of 1.76AGeV the reaction Ar+KCl was studied with the High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Λ sample was collected, allowing for the investigation of the decay channel Ξ-→Λπ-. The deduced Ξ-/(Λ+Σ0) production ratio of (5.6±1.2-1.7+1. 8)×10-3 is significantly larger than available model predictions.

AB - We report first results on a deep subthreshold production of the doubly strange hyperon Ξ- in a heavy-ion reaction. At a beam energy of 1.76AGeV the reaction Ar+KCl was studied with the High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Λ sample was collected, allowing for the investigation of the decay channel Ξ-→Λπ-. The deduced Ξ-/(Λ+Σ0) production ratio of (5.6±1.2-1.7+1. 8)×10-3 is significantly larger than available model predictions.

UR - http://www.scopus.com/inward/record.url?scp=70349456311&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.103.132301

DO - 10.1103/PhysRevLett.103.132301

M3 - Article

AN - SCOPUS:70349456311

SN - 0031-9007

VL - 103

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 132301

ER -

Deep Subthreshold Ξ- Production in Ar+KCl Reactions at 1.76AGeV

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