Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 17: Hadronenstruktur und -spektroskopie
HK 17.6: Vortrag
Dienstag, 18. März 2014, 15:15–15:30, HZ 1+2
Hadron Multiplicities at COMPASS — •Nicolas du Fresne von Hohenesche — For the COMPASS collaboration — Institut für Kernphysik, Universität Mainz, Johann-Joachim-Becher-Weg 45, 55128 Mainz
Quark fragmentation functions (FF) Dqh(z,Q2) describe final-state hadronization 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 newest results from COMPASS on pion and kaon multiplicities will be presented.
Supported by BMBF