The Rise and Fall of Baryons

Details The Rise and Fall of Baryons The Rise and Fall of Baryons

2009-10-26

arxiv.org/abs/0910.4947v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 13 figures, minor changes to the text

Scientific paper

We discuss the baryonic contribution to QCD thermodynamics near the QCD phase transition, which we split into "stringy excitations" and the "chiral" lowest states. Our finite-$T$ string model for the former component is inspired by the lattice data on static potentials and ideas of string survival even $above$ $T_c$: it is used to explain two sets of baryonic susceptibilities calculated on the lattice by the Bielefeld-BNL group. Two new ingredients of the model are (i) the near-$T_c$ tightening of the strings, and (ii) physical upper limit of the string length. Then we proceed to more subtle effects related to chiral restoration dynamics near $T_c$: we suggest that "melting" of the sigma terms of the lowest nucleon/$\Delta$ masses can explain these susceptibilities. In a discussion, we consider bound monopole-quark states, as a possible explanation to some deficits of contribution at $T=(1-1.4)T_c$.

Affiliated with

Also associated with

No associations

Rating

The Rise and Fall of Baryons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Rise and Fall of Baryons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Rise and Fall of Baryons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-563679