827 research outputs found
Structure of the final states in Higgs production at Hadronic Colliders
We quantify the rate and the signal-to-background ratio for Higgs detection in double-diffractive events at the Tevatron and the LHC.
The signal is predicted to be very small at the Tevatron, but observable at the
LHC. We exemplify the diagnostic power of hadronic antenna pattern by
considering the topology of hadronic flow corresponding to Higgs
events.Comment: 4 pages, talk given at XXXI International Symposium on Multiparticle
Dynamics, Sept 1-7, 2001, Datong China. URL http://ismd31.ccnu.edu.cn
Rapidity Gap Higgs Signal at the Tevatron and the LHC
We quantify the rate and the signal-to-background ratio for Higgs --> b
anti-b detection in double-diffractive events at the Tevatron and the LHC. The
signal is predicted to be very small at the Tevatron, but observable at the
LHC. We show that the double-diffractive dijet production may serve as a unique
gluon factory. This process can be used also as a Pomeron-Pomeron luminosity
monitor.Comment: 12 pages, 1 figure, Late
Hunting a light CP-violating Higgs via diffraction at the LHC
We study the central diffractive production of the (three neutral) Higgs
bosons, with a rapidity gap on either side, in an MSSM scenario with
CP-violation. We consider the bb-bar and tautau-bar decay for the light H_1
boson and the four b-jet final state for the heavy H_2 and H_3 bosons, and
discuss the corresponding backgrounds. A direct indication of the existence of
CP-violation can come from the observation of either an azimuthal asymmetry in
the angular distribution of the tagged forward protons (for the exclusive pp ->
p+H+p process) or of a sin(2phi) contribution in the azimuthal correlation
between the transverse energy flows in the proton fragmentation regions for the
process with the diffractive dissociation of both incoming protons (pp ->
X+H+Y). We emphasise the advantage of reactions with the rapidity gaps (that is
production by the pomeron-pomeron fusion) to probe CP parity and to determine
the quantum numbers of the produced central object.Comment: 11 pages, 3 figure
Diffractive gamma-gamma production at hadron colliders
We compute the cross section for exclusive double-diffractive gamma-gamma
production at the Tevatron, , and
the LHC. We evaluate both the gluon-gluon and quark-antiquark t-channel
exchange contributions to the process. The observation of exclusive gamma-gamma
production at the Tevatron will provide a check on the model predictions, and
offer an opportunity to confirm the expectations for exclusive
double-diffractive Higgs production at the LHC.Comment: 16 pages, 7 figure
Lessons from LHC elastic and diffractive data
In the light of LHC data, we discuss the global description of all high
energy elastic and diffractive data, using a one-pomeron model, but including
multi-pomeron interactions. The LHC data indicate the need of a
behaviour, where is the gluon transverse momentum along the partonic
ladder structure which describes the pomeron. We also discuss tensions in the
data, as well as the dependence of the slope of in the
small domain.Comment: 5 pages, 3 figures, Proceedings of Diffraction 2014, Primosten,
Croatia, Sept. 10-1
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