Baryonic resonances close to the (K)over-barN threshold: The case of Lambda (1405) in pp collisions

Publication Type

Journal Article

Year of Publication

2013

Editor

Agakishiev, G.

Balanda, A.

Belver, D.

Belyaev, A.

Berger-Chen, J. C.

Blanco, A.

Bohmer, M.

Boyard, J. L.

Cabanelas, P.

Castro, E.

Chernenko, S.

Christ, T.

Destefanis, M.

Dohrmann, F.

Dybczak, A.

Epple, E.

Fabbietti, L.

Fateev, O.

Finocchiaro, P.

Fonte, P.

Friese, J.

Frohlich, I.

Galatyuk, T.

Garzon, J. A.

Gernhauser, R.

Gilardi, C.

Golubeva, M.

Gonzalez-Diaz, D.

Guber, F.

Gumberidze, M.

Heinz, T.

Hennino, T.

Holzmann, R.

Ierusalimov, A.

Iori, I.

Ivashkin,A.

Jurkovic, M.

Kampfer, B.

Kanaki, K.

Karavicheva, T.

Koenig, I.

Koenig, W.

Kolb, B. W.

Kotte, R.

Krasa, A.

Krizek, F.

Krucken, R.

Kuc, H.

Kuhn, W.

Kugler, A.

Kurepin, A.

Lalik, R.

Lang, S.

Lange, J. S.

Lapidus, K.

Liu, T.

Lopes, L.

Lorenz, M.

Maier, L.

Mangiarotti, A.

Markert, J.

Metag, V.

Michalska, B.

Michel, J.

Moriniere, E.

Mousa, J.

Muntz, C.

Munzer, R.

Naumann, L.

Otwinowski, J.

Pachmayer, Y. C.

Palka, M.

Parpottas, Y.

Pechenov, V.

Pechenova, O.

Pietraszko, J.

Przygoda, W.

Ramstein, B.

Reshetin, A.

Rustamov, A.

Sadovsky, A.

Salabura, P.

Schmah, A.

Schwab, E.

Siebenson, J.

Sobolev, Y. G.

Spataro, S.

Spruck, B.

Strobele, H.

Stroth, J.

Sturm, C.

Tarantola, A.

Teilab, K.

Tlusty, P.

Traxler, M.

Trebacz, R.

Tsertos, H.

Wagner, V.

Weber, M.

Wendisch, C.

Wustenfeld, J.

Yurevich, S.

Zanevsky, Y.

Collaboration, Hades

Name of Publication

Physical Review C

Volume

Issue

Date Published

Feb

Short Title

Baryonic resonances close to the (K)over-barN threshold: The case of Lambda (1405) in pp collisions

Accession Number

WOS:000314683900002

ISBN Number

0556-2813

DOI

10.1103/PhysRevC.87.025201

Abstract

We present an analysis of the Lambda(1405) resonance produced in the reaction p + p -> Sigma(+/-) + pi(-/+) + K+ + p at 3.5 GeV kinetic beam energy measured with the High Acceptance Dielectron Spectrometer (HADES) at the Gesellschaft fur Schwerionenforschung (GSI). The two charged decay channels Lambda (1405) -> Sigma(+/-) + pi(-/+) have been reconstructed for the first time in p + p collisions. The efficiency and acceptance- corrected spectral shapes show a peak position clearly below 1400MeV/c(2). We find a total production cross section of sigma(Lambda(1405)) = (1405) = 9.2 +/- 0.9 +/- 0.7(-1.0)(+3.3)mu b . The analysis of its polar angle distribution suggests that the Lambda(1405) is produced isotropically in the p - p center-of-mass system (CMS). DOI: 10.1103/ PhysRevC.87.025201