Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 7: Heavy Ions I

HK 7.6: Talk

Monday, March 8, 2004, 17:30–17:45, F

Energy dependence of transverse mass spectra of kaons produced in p+p and p+p interactions. A compilation. — •Benjamin Lungwitz, Michael Kliemant, and Marek Gaździcki — IKF Universität Frankfurt

The data on m_T spectra of K_S⁰, K⁺ and K⁻ mesons produced in all inelastic p+p and p+p interactions in the energy range √s_NN=4.7−1800 GeV are compiled and analyzed. The spectra are parameterized by a single exponential function, dN/m_Tdm_T=C· e^−m_T/T, and the inverse slope parameter T is the main object of study. The T parameter is found to be similar for K_s⁰, K⁺ and K⁻ mesons. It increases monotonically with collision energy from T≈130 MeV at √s_NN=4.7 GeV to T≈220 MeV at √s_NN=1800 GeV. The T parameter measured in p+p(p) interactions is significantly lower than the corresponding parameter obtained for central Pb+Pb collisions at all studied energies. Also the shape of the energy dependence of T is different for central Pb+Pb collisions and p+p(p) interactions. Partial support by Bundesministerium für Bildung und Forschung and by Polish Committee of Scientific Research under grant 2P03B04123 (M. G.) is acknowledged.