Central diffractive resonance production at the LHC

Abstract

Abstract. Central production of resonances resulting from the scattering of Pomerons in the central rapidity region of proton-proton scattering is studied. Estimates for relevant cross sections are presented.

Entropy production during hadronization of a quark-gluon plasma

“…Similar fits for other mesonic and baryonic trajectories were performed in Refs. [27,28] and, more recently, in [39] where a hypothetical glueball trajectory was also suggested. We are particularly interested in the onset of saturation, where the rise of the real part of the trajectory terminates.…”

“…It is by far not a trivial problem to combine the nearly linear real part (spectrum of masses) with the highly non-linear imaginary part, connected to finite resonance widths. Attempts in this direction date back to the papers [26] and [27,28], where the real and imaginary parts of the trajectories were connected by dispersion relations. In more pragmatic approaches [30,31,32,33] explicit models compatible with theoretical constraints have been suggested and compared to the data.…”

“…Fig.3) can be found in [30,31,32,33]. More ambitious models [26,27,28] use dispersion relations to relate the real and imaginary parts of the trajectories. In Ref.…”

“…used in eq. (27). While in the following section we shall concentrate on hadronization ideas dealing with the production and properties of the NBD, here we just give a brief review of the physical interpretation of the spectral parameters T and q for general distributions and its connections to thermodynamics.…”

“…In Ref. [25] the f trajectory was calculated according to [27], while for the Pomeron it was approximated by a sum of square-root thresholds as advocated by [30] in their study of meson and baryon resonances.…”