Conveners
Diffraction in hadron-hadron collisions - experiment (III)
- Risto Orava (Helsinki Inst. of Physics and Univ. of Helsinki, CERN)
Michael Albrow Albrow
(Fermilab)
06/09/2016, 11:20
Diffraction in hadron-hadron collisions (experiment)
Central exclusive production in hadron-hadron collisions at high energies, for example p + p → p + X + p where the + represents a large rapidity gap, is a valuable process for spectroscopy of mesonic states X. At collider energies the gaps can be large enough to be dominated by pomeron exchange, and then the quantum numbers of state X are limited. Isoscalar JPC = 0++ and 2++ mesons are...
Mateusz Dyndal
(ATLAS)
06/09/2016, 11:50
Diffraction in hadron-hadron collisions (experiment)
The ATLAS collaboration has carried out a study of diffractive dijet production at 7 TeV pp
collisions at the LHC, i.e. events with a hadronic system containing at least two jets in addition
to a large region of pseudorapidity devoid of hadronic activity. The data distributions are
compared with Monte Carlo models and the rapidity gap survival probability has been estimated
in the...
Mohsen Khakzad
(IPM)
06/09/2016, 12:10
Diffraction in hadron-hadron collisions (experiment)
We report a measurement of the exclusive production of pairs of charged pions in
proton-proton collisions, dominated by the process pp->p(*)pi^+pi^-p(*), where p(*)
stands for a diffractively dissociated proton, the p+p- pair is emitted at central rapidities y, and the incident protons stay intact or dissociate without detection p(*).
The measurement is performed with the CMS detector at...
Antonio Gioiosa
(LE)
06/09/2016, 12:30
Diffraction in hadron-hadron collisions (experiment)
We present new CDF data on exclusive K+ K- and p-pbar production. Data were taken at sqrt(s) = 1960 GeV and 900 GeV in low pile-up conditions. Events were selected with exactly two well-measured central tracks with PT > 300 MeV/c and |eta| < 0.8 and no evidence for other particles (including calorimeter clusters) in the range -5.3 < eta < +5.3, signifying two rapidity gaps exceeding Delta-eta...
Rafal Sikora
(AGH University of Science and Technology)
06/09/2016, 12:50
Diffraction in hadron-hadron collisions (experiment)
The STAR experiment at the Relativistic Heavy Ion Collider (RHIC) performs studies of diffractive processes with the focus on the exclusive production of particles in central range of rapidity. In 2015 STAR collected 18~pb$^{-1}$ of data in polarized proton+proton collisions at $\sqrt{s}$~=200~GeV to measure Central Exclusive Production process $pp\to pXp$ (CEP) through Double Pomeron Exchange...
Marek Tasevsky
(ATLAS)
06/09/2016, 13:10
Diffraction in hadron-hadron collisions (experiment)
Detector description and experience with first data will be reported.
