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arxiv: 1510.03720 · v4 · submitted 2015-10-13 · ✦ hep-ex · nucl-ex

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Production of Λ hyperons in inelastic p+p interactions at 158 GeV/c

A. Aduszkiewicz , Y. Ali , E. Andronov , T. Anti\'ci\'c , N. Antoniou , B. Baatar , F. Bay , A. Blondel
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M. Bogomilov A. Brandin A. Bravar J. Brzychczyk S.A. Bunyatov O. Busygina P. Christakoglou M. \'Cirkovi\'c T. Czopowicz A. Damyanova N. Davis H. Dembinski M. Deveaux F. Diakonos S. Di Luise W. Dominik J. Dumarchez K. Dynowski R. Engel A. Ereditato G.A. Feofilov Z. Fodor A. Garibov M. Ga\'zdzicki M. Golubeva K. Grebieszkow A. Grzeszczuk F. Guber A. Haesler T. Hasegawa A.E. Herv\'e M. Hierholzer S. Igolkin A. Ivashkin S.R. Johnson K. Kadija A. Kapoyannis E. Kaptur J. Kisiel T. Kobayashi V.I. Kolesnikov D. Kolev V.P. Kondratiev A. Korzenev K. Kowalik S. Kowalski M. Koziel A. Krasnoperov M. Kuich A. Kurepin D. Larsen A. L\'aszl\'o M. Lewicki V.V. Lyubushkin M. Ma\'ckowiak-Paw{\l}owska B. Maksiak A.I. Malakhov D. Mani\'c A. Marcinek A.D. Marino K. Marton H.-J. Mathes T. Matulewicz V. Matveev G.L. Melkumov B. Messerly G.B. Mills S. Morozov S. Mr\'owczy\'nski Y. Nagai T. Nakadaira M. Naskr\k{e}t M. Nirkko K. Nishikawa A.D. Panagiotou V. Paolone M. Pavin O. Petukhov C. Pistillo R. P{\l}aneta B.A. Popov M. Posiada{\l}a S. Pu{\l}awski J. Puzovi\'c W. Rauch M. Ravonel A. Redij R. Renfordt E. Richter-W\k{a}s A. Robert D. R\"ohrich E. Rondio M. Roth A. Rubbia B.T. Rumberger A. Rustamov M. Rybczynski A. Sadovsky K. Sakashita K. Schmidt T. Sekiguchi I. Selyuzhenkov A. Seryakov P. Seyboth D. Sgalaberna M. Shibata M. S{\l}odkowski P. Staszel G. Stefanek J. Stepaniak H. Str\"obele T. \v{S}u\v{s}a M. Szuba M. Tada A. Taranenko D. Tefelski V. Tereshchenko R. Tsenov L. Turko R. Ulrich M. Unger M. Vassiliou D. Veberi\v{c} V.V. Vechernin G. Vesztergombi L. Vinogradov A. Wilczek Z. W{\l}odarczyk A. Wojtaszek-Szwarc O. Wyszy\'nski L. Zambelli E.D. Zimmerman (The NA61/SHINE Collaboration)
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classification ✦ hep-ex nucl-ex
keywords hyperonsinelasticinteractionslambdamomentumproductiontransverseacceptance
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Inclusive production of $\Lambda$-hyperons was measured with the large acceptance NA61/SHINE spectrometer at the CERN SPS in inelastic p+p interactions at beam momentum of 158~\GeVc. Spectra of transverse momentum and transverse mass as well as distributions of rapidity and x$_{_F}$ are presented. The mean multiplicity was estimated to be $0.120\,\pm0.006\;(stat.)\,\pm 0.010\;(sys.)$. The results are compared with previous measurements and predictions of the EPOS, UrQMD and FRITIOF models.

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