10.3204/DESY-PROC-2012-02/72
Ruzicka, Pavel
Pavel
Ruzicka
Diffraction and rapidity gap measurements in ATLAS.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
2013
ConferencePaper
Physics
2013
en
Abstract
Proc. of DIS 2012, 549-552; DESY
Pseudorapidity gap distributions in Large Hadron Collider proton-proton
collisions at \sqsen\ are studied using a minimum bias data sample
of integrated luminosity $7.1 \ {\rm \mu b^{-1}}$. Cross sections
are measured differentially in the size \detaf of the larger of the
pseudorapidity regions extending to the limits of the \mbox{ATLAS}
acceptance, at $\eta = \pm 4.9$, in which no final state particles
are produced above a transverse momentum threshold \ptcut. The measurements
span the region $0 < \detaf < 8$ for $200 < \ptcut < 800$~MeV.
The measured data, at large \detaf, constrain value of pomeron intercept
appropriate to triple Regge models while at small \detaf, data test
reliability of hadronisation models in describing rapidity and transverse
momentum fluctuations in final state particle production.
Proc. of DIS 2012, 549 - 552; DESY-PROC-2012-02; ISSN 1435-8077