August 23, 2021 to October 7, 2021
Venue: OAC conference center, Kolymbari, Crete, Greece. Participation is possible also via internet.
Europe/Athens timezone

Study of the central exclusive production of $\pi^+\pi^-$, $K^+K^-$ and $p \bar{p}$ pairs in proton-proton collisions at $\sqrt{s} = 510$ GeV with the STAR detector at RHIC

Sep 1, 2021, 5:30 PM
Room 1

Room 1


Tomáš Truhlář


We report on the measurement of the central exclusive production process $pp \ \rightarrow \ pXp$ in proton-proton collisions at RHIC with the STAR detector at $\sqrt{\mathrm{s}} = 510$ GeV. At this energy, this process is dominated by a double Pomeron exchange mechanism. The tracks of the centrally produced system $X$ were reconstructed in the central detector of STAR, the Time Projection Chamber and the Time of Flight systems, and were identified using the ionization energy loss and the time of flight method. The diffractively scattered protons, moving intact inside the RHIC beam pipe after the collision, were measured in the Roman Pots system allowing full control of the interaction's kinematics and verification of its exclusivity. The preliminary results on the invariant mass distributions of centrally produced $\pi^+ \pi^-$, $K^+ K^-$ and $p \bar{p}$ pairs measured within the STAR acceptance are presented.


Tomas Truhlar
Czech Republic

Is this abstract from experiment? Yes
Name of experiment and experimental site The STAR collaboration
Is the speaker for that presentation defined? Yes
Internet talk Maybe

Primary author

Tomáš Truhlář

Presentation materials