Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Poster (a)

HK 51.5: Poster

Donnerstag, 2. April 2020, 16:30–18:30, Zelt

Σ+ production in pp collisions at s=13 TeV in ALICE — •Steven Merkel for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität Frankfurt

The ALICE experiment at the CERN LHC investigates the properties of the quark-gluon plasma (QGP) which is believed to be produced in ultra-relativistic heavy-ion collisions at high collision energies. Hadron production measurements in pp collisions provide information about the underlying QCD processes and fragmentation functions. Furthermore, pp results provide an important baseline for the interpretation of ultra-relativistic heavy-ion collisions.

A proper description of the production of strange particles still poses a challenge for Monte Carlo generators like PYTHIA. The measurement of the production of strange hadrons like Σ+ can help to better constrain the theoretical models. In the ALICE experiment, Σ+ can be measured via the decay channel Σ+→ p + π0. π0 can be measured via the two-photon decay channel, utilizing the calorimeters EMCal and PHOS; protons can be measured with the TPC.

In this poster, a new study of the measurement Σ+→ p + π0 in ALICE is presented for pp collisions at √s=13 TeV.

Supported by BMBF and the Helmholtz Association.

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