Conveners
WG2/4: Diffraction and QCD: Joint QCD/HFS - Low x/Diff session
- Claudia Glasman (Universidad Autonoma de Madrid)
- Andrea Banfi (University of Sussex)
- Bogdan Malaescu (Univ. P. et Marie Curie (Paris VI) (FR))
- Halina Abramowicz (Tel Aviv University (IL))
- Jonathan Hollar (Lawrence Livermore National Laboratory)
- Samuel Wallon
Oldrich Kepka
(Acad. of Sciences of the Czech Rep. (CZ))
25/04/2013, 08:30
QCD and Hadronic Final States
Talk in Parallel Session at DIS2013
Particle distributions sensitive to the underlying event in calorimeter jet events have been measured with the ATLAS detector at the LHC. Charged particle multiplicity, charged and inclusive sum transverse momentum (pT) densities and mean charged-particle pT in the regions of each event, azimuthally transverse to the hardest jet, are also presented.
The underlying event properties are...
Piotr Lebiedowicz
(Institute of Nuclear Physics PAN)
25/04/2013, 08:50
QCD and Hadronic Final States
Talk in Parallel Session at DIS2013
The amplitudes for $p p \to p p \pi^{0}$ process at high energy discussed given.
Both diffractive bremsstrahlung and diffractive $\pi^{0}$-rescattering
(Drell-Hiida-Deck (DHD) type model) as well as
photon-photon and photon-omega exchange mechanisms are
included in the calculation and discussed in detail.
Fairly large cross sections of the order of mb are predicted.
The corresponding...
Daniel Fagundes
25/04/2013, 09:10
QCD and Hadronic Final States
Talk in Parallel Session at DIS2013
We present an update of a simple parametrization of the elastic differential cross-section,originally based on two exponential terms and a relative phase. Previous analyses of TOTEM data at LHC7 had shown the model to be able to reproduce well the region before, through and after the dip, however missing by 10-20 % the optical point. We show that inclusion of a multiplicative factor,...
Albert Knutsson
(University of Antwerp (BE))
25/04/2013, 09:30
Small-x, Diffraction and Vector Mesons
Talk in Parallel Session at DIS2013
We present results on forward and forward+central jet production, and on the properties of dijet events as a function of rapidity separation. The measurements are compared to model predictions to look for new effects in small-x interactions.
Radek Zlebcik
25/04/2013, 09:50
Small-x, Diffraction and Vector Mesons
Talk in Parallel Session at DIS2013
The cross section of diffractive photoproduction processes e+p -> eXp is measured, where the system X contains at least 2 jets and the proton is tagged in the Very Forward Proton Spectrometer (VFPS) of the H1 detector. The measurement is performed for untagged photoproduction with Q2 <2 GeV2 in photon virtuality. The results are compared to next-to-leading order QCD calculations based on...
Bertrand Ducloue
(LPT Orsay)
25/04/2013, 10:10
Small-x, Diffraction and Vector Mesons
Talk in Parallel Session at DIS2013
Mueller Navelet jets were proposed 25 years ago as a decisive test of BFKL dynamics at hadron colliders. We here present a next-to-leading BFKL study of the cross section and azimuthal decorrelation of these jets. This includes both next-to-leading corrections to the Green's function and next-to-leading corrections to the Mueller Navelet vertices. We compare our results with the same...
