Proceedings (PRO)

Dear all,

Please find attached the version of proceedings that was submitted to organizers for my talk at the Hadron2015 conference. I will update if I receive feedback from them.

Regards,

Ermias,

Charm and charmonium physics have gained renewed interest in the past decade. Recent spectroscopic observations strongly motivate these studies. Among the several possible reactions, measurements in proton-antiproton annihilation play an important role, complementary to the studies performed at B-factories. The fix-target PANDA experiment at FAIR (Darmstadt, Germany) will investigate fundamental questions of hadron and nuclear physics in the interactions of antiprotons with nucleons and nuclei. With reaction rates as large as 2 * 10^7 interactions/s, and a mass resolution 20 times better as compared with the most recent B-factories, PANDA is in a privileged position to successfully perform the measurement of the width of narrow states such as the X(3872). PANDA will investigate also high spin particles, whose observation was forbidden at B-factories, i.e. F-wave charmonium states. Original contributions are expected for the ppbar annihilation cross section measurements to open charm, too, for which several theoretical models exist, leading to different expectations. Extrapolations on cross sections and rates with PANDA are given, with evidence on the original contribution that PANDA will be able to deliver in the study of the X-Y-Z-family states above the DD^* threshold.

The PANDA experiment addresses fundamental questions in hadron and nuclear physics via interactions of antiprotons with nucleus / nuclei. The experiment is currently under construction at the Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany. The High Energy Storage Ring (HESR) will provide an antiproton beam with a momentum range of 1.5 - 15 GeV/c and an average collision rate on the fixed target of 20 MHz is envisaged. The barrel-shaped time-of-flight (TOF) detector is planned as a scintillator tile hodoscope covering the central region of the PANDA detector and plays a crucial role in determining the time origin of the track. An online data reduction of about a factor 1000 is necessary and therefore the timing information of the scintillator tile hodoscope will be one of the key components. The detector provides particle identification also for slow particles below the momentum threshold of the DIRC. In order to fulfill the requirements, plastic scintillator tiles with minimum material budget read out by Silicon Photomultipliers (SiPMs) have been selected and the time resolution will be sigma < 100 ps.

The physics program of the PANDA experiment at FAIR is illustrated, with a particular attention to the planned activity in the field of the doubly strange systems. The investigation of these systems can help, among others, to shed light on the role of the hyperons in the composition of the neutron stars. The great advantages that can be reached in the field of the charmed systems and nucleon structure by using high quality and intense antiproton beams are also recalled.

Proceedings for the talk at the DSPIN-15 workshop.

The corresponding release note can be found here:
https://panda.gsi.de/publication/rn-hyp-2015-009

And the talk here:
https://panda.gsi.de/publication/ta-con-2015-053

Submission deadline for the proceedings is October 15th with a maximum of 8 pages.

Monte Carlo simulations for charmonium(-like) states at the planned PANDA experiment are presented, in particular the search for the h_c', the search for the ^3F_4 state and the search for the rare decay Y(4260)→e+e−.

Proceedings for the FewBody conference in 2015. The corresponding talked focused on spin observables in antihyperon-hyperon production as well as highlighting the activities of the Uppsala group in terms of software development for PANDA.
The discussion for the talk can be found here: https://panda.gsi.de/publication/ta-con-2015-011

The barrel time-of-flight detector for the PANDA experiment at FAIR is foreseen as a Scintillator Tile (SciTil) Hodoscope based on several thousand small plastic scintillator tiles read-out with directly attached Silicon Photomultipliers (SiPMs). The main tasks of the system are an accurate determination of the time origin of particle tracks to avoid event mixing at high collission rates, relative time-of-flight measurements as well as particle identification in the low momentum regime. The main requirements are a minimum use of material and a time resolution of $\sigma < 100\,\mathrm{ps}$. We have performed extensive optimization studies and prototype tests to prove the feasibility of the SciTil design and finalize the R\&D phase. In a 2.7\,GeV/c proton beam at Forschungszentrum J\"ulich a time resolution of about 80\,ps has been achieved using SiPMs from KETEK and Hamamatsu with an active area of $3\times3\,\mathrm{mm^2}$. Employing the Digital Photon Counter from Philips a time resolution of about 30\,ps has been reached.