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At the borderline between exclusive and inclusive physics: Study of Drell-Yan fragments in the PANDA experiment (a preliminary simulation)

BIANCONI, Andrea
2010-01-01
2010
2010
Ateneo di appartenenza
PE2_2 Particle physics
THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI
sì
2-s2.0-77951975419
WOS:000277182900015
Sì, ma tipo non specificato
Inglese
Internazionale
44
313
319
6
Here a preliminary study is presented concerning the detection of the normally unseen Drell-Yan fragments, possible in the PANDA experiment. To work as a multi-purpose apparatus, this experiment will record all the particles produced in the collisions between the antiproton beam and the target, with a rather wide acceptance. So detecting Drell-Yan dileptons with or without analyzing the other fragments is just a matter of applying cutoffs in the data analysis stage. The distribution of the products of 50000 typical Drell-Yan events is here simulated using a well-known generator code (Pythia-8). The resulting distributions are inserted within the PANDA acceptance region to analyze the chances of missing some searched fragment combinations, or of confusing different sets of particles. The most interesting result is that, due to the reduced phase space, the produced states are much simpler than one could imagine: i) almost 50% of the events just consist of a dilepton plus a nucleon-antinucleon pair; ii) practically all events present a nucleon-antinucleon pair; iii) the number of light particles (photons over an infrared cutoff and pions) is pretty small. The presented simulations show that it is possible to study experimentally some, or some aspects, of the most relevant final states, with good statistics and precision.
Enti pubb. di ricerca ital.
1
info:eu-repo/semantics/article
262
Bianconi, Andrea
1 Contributo su Rivista::1.1 Articolo in rivista
none
1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/36426
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