Lambda and (lambda)over-bar reconstruction in central Pb+Pb collisions using a time projection chamber (CROSBI ID 77400)
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Podaci o odgovornosti
Yates, T ; Afanasiev, S.V ; Alber, T ; Appelshäuser, H ; Bächler, J ; Bailey, S.J ; Barnby, L.S ; Bartke, J ; Bialkowska, H ; Blyth, C.O ; Bock, R ; Bormann, C ; Brady, F.P ; Brockmann, R ; Bunčić, N ; Bunčić, P ; Caines, H.L ; Cebra, D ; Chan, P ; Cooper, G.E ; Cramer, J.G ; Cramer, P.B ; Csato, P ; Dietz, O ; Dunn, J ; Eckardt, V ; Eckhardt, F ; Ferguson, M.I ; Fischer, H.G ; Flierl, D ; Fodor, Z ; Foka, P ; Freund, P ; Friese, V ; Fuchs, M ; Gabler, F ; Gal, J ; Gazdzicki, M ; Gladysz, E ; Grebieszkow, J ; Günther, J ; Harris, J.W ; Hegyi, S ; Henkel, T ; Hill, L.A ; Huang, I ; Howe, M.A ; Hümmler, H ; Igo, G ; Irmscher, D ; Jacobs, P ; Jones, P.G ; Kadija, Krešo ; Kolesnikov, V.I ; Kowalski, M ; Lasiuk, B ; Lévai, P ; Malakhov, A.I ; Margetis, S ; Markert, C ; Melkumov, G.L ; Mock, A ; Molnár, J ; Nelson, J.M ; Odyniec, G ; Palla, G ; Panagiotou, A.D ; Petridis, A ; Piper, A ; Porter, R.J ; Poskanzer, A.M ; Poziombka, S ; Prindle, D.J ; Pühlhofer, F ; Rauch, W ; Reid, J.G ; Renfordt, R ; Retyk, W ; Ritter, H.G ; Röhrich, D ; Roland, C ; Roland, G ; Rudolph, H ; Rybicki, A ; Sakrejda, I
engleski
Lambda and (lambda)over-bar reconstruction in central Pb+Pb collisions using a time projection chamber
The large acceptance time projection chambers of the NA49 experiment are used to record the trajectory of charged particles from Pb-Pb collisions at 158 GeV per nucleon. Neutral strange hadrons have been reconstructed from their charged decay products. To obtain distributions of lambda, anti-lambda and k0-short in discrete bins of rapidity, y, and transverse momentum, pT, calculations have been performed to determine the acceptance of the detector and the efficiency of the reconstruction software as a function of both variables. The lifetime distributions obtained give values of ct=7.8+-0.6 cm for lambda and ct=2.5+-0.3 cm for k0-short, consistent with data book values.
NA49; heavy ion; lambda; TPC; time projection chamber; Pb+Pb
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