117090913
sigma+/- lifetimes and longitudinal acceleration
117777421
sigma- Production and decay properties in K-p --> sigma-pi+
123564276
Production of K∗(892) in K+N interactions at 3 GeV/c
We have studied the reactions K+d→K+π−pp,K+d→Koπopp,K+d→Koπ+pp, obtained from an exposure of the Saclay 81-cm bubble chamber filled with deuterium and exposed at CERN to a separated 3 GeV/c K+ beam. 
 
In reactions (1) and (2) there is abundant production of K∗0(892) and some production of K∗(1420). From the density matrix elements, it is found that K∗0(892) is produced mainly by pion exchange. The K∗(892) four-momentum-transfer distribution in reaction (1) agrees with the predictions of the OPE model, as modified by Durr and Pilkuhn. A marked asymmetry of the decay distribution of the K+π− system is observed and discussed in the framework of a unitarized Veneziano model. In reaction (3), on the other hand, the production of K∗+(892) and N∗+(1236) is found to proceed mainly by vector exchange.
122292810
A total energy trigger at large angles used in a calorimetric study of 150 GeV and 300 GeV pion and proton interactions on hydrogen
Abstract Hard hadronic scattering was studied by selecting 150 GeV and 300 GeV π − p and pp events with large energy in a 240 cell calorimeter covering 45† to 135† in the c.m.s. polar angle and the full 2 π azimuth. A downstream calorimeter measured the remaining energy flow at smaller angles. For large energy deposited in the segmented calorimeter the proton induced cross section drops below the pion induced cross section, as expected in a constituent scattering picture. However, neither a simple energy scaling of the cross section nor a dominant jet structure of the events is observed. No evidence was found for recently proposed higher-twist mechanisms leading to events
122039401
Long-range correlations in hadron-nucleus interactions
An analysis of correlations in rapidity of charged particles produced in proton and antiproton interactions on hydrogen, argon and xenon at 200 GeV is presented. Positive long-range correlations are observed in interactions on heavy targets. The dependence of rapidity correlations between the forward and backward hemisphere on the number of projectile collisions is discussed.
188188770
The reaction k+ d ---> k0 p p at 4.6 gev/c
118602031
A LINEAR SIGMA MODEL WITH THREE FLAVORS AND VECTOR AND AXIAL-VECTOR MESONS
We outline the extension of the globally chirally invariant Nf = 2 linear sigma model with vector and axial-vector degrees of freedom to Nf = 3. We present preliminary results concerning the scalar meson masses.
119310978
Role of Φ decays for K- yields in relativistic heavy-ion collisions
The production of strange mesons in collisions of Ar+KCl at a kinetic beam energy of 1.756A GeV is studied within a transport model of Boltzmann-Uehling-Uhlenbeck type. In particular, phi,K{sup +}, and K{sup -} yields and spectra are compared to the data measured recently by the HADES Collaboration and the phi yield measured previously by the FOPI Collaboration. Our results are in agreement with these data, thus presenting an interpretation of the subleading role of phi decays into K{sup -}'s and confirming the importance of the strangeness-exchange channels for K{sup -} production.
122345306
Description of the nuclear stopping process within anisotropic thermo-hydrodynamics
Abstract A generalized hydrodynamics is presented, which takes into account the anisotropy of the nucleon momentum distribution. The dynamics of the nuclear stopping process is studied in this framework.
17589793
Dilepton Decays of Baryon Resonances
Dalitz decay of baryon resonances is studied and expressions for the decay width are derived for resonances with arbitrary spin and parity. Contributions of the various terms in the transition matrix element are compared and relevance of spin-parity and the resonance mass is discussed. Explicit algebraic expressions are cited for spin ≤5/2 resonances. The results can be used in models of dielectron production in elementary reactions and heavy ion collisions.
118507340
Masses of Axial‐Vector Resonances in a Linear Sigma Model with Nf = 3
We discuss an Nf = 3 linear sigma model with vector and axial‐vector mesons (extended Linear Sigma Model–eLSM). We present first results regarding the masses of axial‐vector mesons determined from the extended model.