Submitted by e.prencipe on Mon, 09/11/2015 - 11:26.
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.
D. Steinschaden,K. Dutta, L. Gruber, K. Suzuki, M. Böhm, M. Cardinali, M. Hoek, K. Kalita, K. Götzen, H. Kumawat, W. Lauth, A. Lehmann, J. Marton, H. Orth, A. Parmar, B. J. Roy, C. Sonika, L. Schmitt, C. Schwarz, C. Sfienti, M. Thiel
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:
And the talk here:
Submission deadline for the proceedings is October 15th with a maximum of 8 pages.