5,529 research outputs found
Mueller Navelet jets, jet gap jets and anomalous couplings in -induced processes at the LHC
We describe two different important measurements to be performed at the LHC.
The Mueller Navelet jet and jet gap jet cross section represent a test of BFKL
dynamics and we perform a NLL calculation of these processes and compare it
with recent Tevatron measurements. The study of the couplings
at the LHC using the forward detectors proposed in the ATLAS Forward Physics
project as an example allows to probe higgsless and extradimension models via
anomalous quartic couplings since the reach is improved by four orders of
magnitude with respect to the LEP results.Comment: Proceedings of the Forward Physics at LHC Workshop, Elba Island,
Italy, May 27-29 201
Diffraction at HERA, Tevatron and LHC
In this short review, we describe some of the results on diffraction from the
Tevatron and give some prospects for the LHC. In particular, we discuss the
search for exclusive events at the Tevatron and their importance for the LHC
program/ We finish by presenting the project of installing forward detectors in
the ATLAS collaboration at 220 and 420 m.Comment: Contribution to the proceedings of the Cracow epiphany conference on
hadron interactions at the dawn of the LHC in honour of Prof. Jan Kwiecinski,
5-7 January 2009, Craco
Forward physics with tagged protons at the LHC: QCD and anomalous couplings
We present some physics topics that can be studied at the LHC using proton
tagging. We distinguish the QCD (Pomeron structure, BFKL analysis...) from the
exploratory physics topics (HIggs boson, anomalous couplings between photons
and bosonsComment: Proceedings of the Low x 2013 workshop, May 30 - June 4 2013, Rehovot
and Eilat, Israe
Project to install roman pot detectors at 220 m in ATLAS
We give a short description of the project to install roman pot detectors at
220 m from the interaction point in ATLAS. This project is dedicated to hard
diffractive measurements at high luminosity.Comment: Proceedings for the DIS 2007 workshop, Munich, April 200
A phenomenological study of BFKL evolution
The QCD dipole picture allows to build an unified theoretical description
-based on BFKL dynamics- of the total and diffractive nucleon structure
functions measured at HERA. We use a four parameter fit to describe the 1994 H1
proton structure function data in the low x, moderate range.
The diffractive dissociation processes are discussed within the same framework,
and a 6 parameter fit of the 1994 H1 diffractive structure function data is
performed.
The BFKL dynamics can also be successfully tested at the collider
LEP and a future high energy linear collider. The total
cross-section is calculated in the Leading Order QCD dipole picture of BFKL
dynamics, and compared with the one from 2-gluon exchange. Next to Leading
order corrections to the BFKL evolution have been determined
phenomenologically, and are found to give very large corrections to the BFKL
cross-section, leading to a reduced sensitivity for observing BFKL effects. The
Y dependence of the cross-section remains a powerful tool to increase the ratio
between the BFKL and the 2-gluon cross-sections and is more sensitive to BFKL
effects, even in the presence of large higher order corrections.Comment: 10 pages, 2 figures, Invited talk given at the Hadron 13 Conference,
Mumbai, 13-20 January 199
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