Properties of the specific heat and chemical potentials of hadronic matter from CERN/RHIC experiments at relativistic and ultrarelativistic collision energies

The specific heat, mean hadronic mass excited and its fluctuation are connected to particle production yields and properties of baryon and electric charge chemical potentials (value, slope and curvature). A possible divergence of the specific heat as 1/(T0-T)2 is discussed. A Hagedorn model with rho~m-tauexp(betahm) is studied and restriction on tau are analyzed. Limitations imposed by a Q-g transition are mentioned

Obtaining the Specific Heat of Hadronic Matter from CERN/RHIC Experiments

The specific heat of hot hadronic matter is related to particle production yields from experiments done at CERN/RHIC. The mass fluctuation of excited hadrons plays an important role. Connections of the specific heat, mean hadronic mass excited and its fluctuation with properties of baryon and electric chemical potentials (value, slope and curvature) are also developed. A possible divergence of the specific heat as 1/(To-T)^2 is discussed. Some connections with net charge fluctuations are noted.Comment: 10 page

Beyond Collins and Sivers: further measurements of the target transverse spin-dependent azimuthal asymmetries in semi-inclusive DIS from COMPASS

In semi-inclusive DIS of polarized leptons on a transversely polarized target eight azimuthal modulations appear in the cross-section. Within QCD parton model four azimuthal asymmetries can be interpreted at leading order, two of them being the already measured Collins and Sivers asymmetries. The other two leading twist asymmetries, related to different transverse momentum dependent quark distribution functions, and also additional four asymmetries which can be interpreted as twist-three contributions have been measured for the first time at COMPASS, using a 160 GeV/c longitudinally polarized ($P_{beam}\simeq -0.8$) muon beam and a transversely polarized $^6LiD$ target. We present here the preliminary results from the 2002-2004 data.Comment: Talk given on XV Internetional Workshop on Deep-Inelastic Scattering and Related Subjects, April 16-20, 2007, Munich, German