An upper limit on hypertriton production in collisions of Ar(1.76 AGeV)+KCl

HADES Collaboration: G. Agakishiev , D. Belver , A. Blanco , M. B\"ohmer , J. L. Boyard , P. Cabanelas , E. Castro , S. Chernenko

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M. Destefanis F. Dohrmann A. Dybczak E. Epple L. Fabbietti O. Fateev P. Finocchiaro P. Fonte J. Friese I. Fr\"ohlich T. Galatyuk J. A. Garz\'on R. Gernh\"auser C. Gilardi M. Golubeva D. Gonz\'alez-D\'iaz F. Guber M. Gumberidze T. Heinz T. Hennino R. Holzmann I. Iori A. Ivashkin M. Jurkovic B. K\"ampfer T. Karavicheva I. Koenig W. Koenig B. W. Kolb R. Kotte A. Kr\'asa F. Krizek R. Kr\"ucken H. Kuc W. K\"uhn 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. Miche E. Morini\`ere J. Mousa C. M\"untz L. Naumann Y. C. Pachmayer M. Palka V. Pechenov O. Pechenova J. Pietraszko W. Przygoda B. Ramstein L. Rehnisch A. Reshetin A. Rustamov A. Sadovsky P. Salabura T. Scheib A. Schmah H. Schuldes E. Schwab J. Siebenson Yu. G. Sobolev S. Spatarof B. Spruck H. Str\"obele J. Stroth C. Sturm A. Tarantola K. Teilab P. Tlusty M. Traxler R. Trebacz H. Tsertos V. Wagner M. Weber C. Wendisch M. Wisniowski J. W\"ustenfeld S. Yurevich Y. Zanevsky

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classification ⚛️ nucl-ex hep-ex

keywords lambdalimitupperagevhypertritonproductionallowscalculations

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A high-statistic data sample of Ar(1.76 AGeV)+KCl events recorded with HADES is used to search for a hypertriton signal. An upper production limit per centrality-triggered event of $1.04$ x $10^{-3}$ on the $3\sigma$ level is derived. Comparing this value with the number of successfully reconstructed $\Lambda$ hyperons allows to determine an upper limit on the ratio $N_{_{\Lambda}^3H}/N_{\Lambda}$, which is confronted with statistical and coalescence-type model calculations.

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An upper limit on hypertriton production in collisions of Ar(1.76 AGeV)+KCl

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