Primakoff Physics for CERN COMPASS Hadron Beam: Hadron Polarizabilities, Hybrid Mesons, Chiral Anomaly, Meson Radiative Transitions

We describe a hadron physics program attainable with a partially instrumented CERN COMPASS spectrometer, involving tracking detectors and moderate-size ECAL2/HCAL2 calorimeters. COMPASS can realize a state-of-the-art hadron beam physics program based on hadron polarizability, hybrid mesons, chiral anomaly, and meson radiative transition studies. We review here the physics motivation for this hadron beam program. We describe the beam, detector, trigger requirements, and hardware/software requirements for this program. The triggers for all this physics can be implemented for simultaneous data taking. The program is based on using a hadron beam (positive/negative pion, kaon, proton) in COMPASS.Comment: Contribution to the Proceedings of the Charles U./JINR and International U. (Dubna) CERN COMPASS Summer School, Charles University, Prague, Czech Republic, August 1997, Eds. M. Chavleishvili and M. Finger Tel Aviv U. Preprint TAUP TAUP-2473-98. 26 pages, 11 figures, late

Hadron-Photon Interactions in COMPASS

The COMPASS experiment at CERN SPS will use hadron beams (pion, kaon and proton) and muons at 50-280 GeV/c and virtual photon targets to investigate, via Primakoff effect, important hadron properties: polarizability, chiral anomaly, radiative transitions and hybrid meson production. We present simulation studies to optimize the beam, detector setup and trigger for measuring with high statistics above topics.Comment: 10 pages, 3 figures, 3 macro

Color Transparency at COMPASS - Feasibility Study

We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this important prediction of perturbative QCD.Comment: Expanded version of the talk presented at the Workshop on "Nucleon Structure and Meson Spectroscopy", Dubna, Russia, 10-11 October 200

Color Transparency at COMPASS via Exclusive Coherent Vector Meson Production

We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive coherent vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this important prediction of perturbative QCD.Comment: Contribution to Proceedings of 2002 Praha Advanced Study Institute "Symmetries and Spin" Workshop, Praha-SPIN-2002, July 2002, Prague, Czech Republic. File has 13 pages, four figures. Conference site is http://mfinger.home.cern.ch/mfinger/praha200

How to Search for Doubly Charmed Baryons and Tetraquarks

Possible experimental searches of doubly charmed baryons and tetraquarks at fixed target experiments with high energy hadron beams and a high intensity spectrometer are considered here. The baryons considered are: $\Xi_{cc}^{+}$ (ccd), $\Xi_{cc}^{++}$ (ccu), and $\Omega_{cc}^{+}$ (ccs); and the tetraquark is T ($cc\bar{u}\bar{d}$). Estimates are given of masses, lifetimes, internal structure, production cross sections, decay modes, branching ratios, and yields. Experimental requirements are given for optimizing the signal and minimizing the backgrounds. The discussion is in the spirit of an experimental and theoretical review, as part of the planning for a CHarm Experiment with Omni-Purpose Setup (CHEOPS) at CERN. The CHEOPS objective is to achieve a state-of-the-art very charming experiment, in the spirit of the aims of the recent CHARM2000 workshop.Comment: 18 pages text (latex), 16 March 1995, presented at "Physics with Hadron Beams with a High Intensity Spectrometer", revised 10 May for more complete bibliography and appropriate references to S. Paul et al., Letter of Intent, CHEOPS