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HK: Fachverband Physik der Hadronen und Kerne

HK 9: Hadron Structure and Spectroscopy II

HK 9.3: Talk

Monday, March 14, 2016, 17:15–17:30, S1/01 A5

Measurement of Charged Kaon Multiplicities at COMPASS — •Nicolas du Fresne von Hohenesche — For the COMPASS collaboration — Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Johann-Joachim-Becher-Weg 45, 55128 Mainz

Quark fragmentation functions (FF) D_q^h(z,Q²) describe final-state hadronisation of quarks q into hadrons h. The FFs can be extracted from hadron multiplicities produced in semi-inclusive deep inelastic scattering. The COMPASS collaboration has recently measured charged hadron multiplicities for identified pions and kaons using a 160 GeV/c muon beam impinging on an isoscalar target. The data cover a large kinematical range and provide an important input for global QCD analyses of world data at NLO, aiming at the determination of FFs in particular in the strange quark sector. The most recent results from COMPASS on kaon multiplicities will be presented.
Supported by BMBF