2,521 research outputs found
Exclusive High Mass Di-leptons in CDF
In the Collider Detector at Fermilab, CDF, we have measured central exclusive
production, p+pbar --> p+X+pbar, where X is a pair of leptons or photons and
nothing else. In this talk I focus on central masses M(X) > 8 GeV/c2. We
measured QED production photon+photon --> e+e-,mu+mu- up to M(l+l-) = 75
GeV/c2, and candidates for photoproduction of Upsilons, photon+pomeron -->
Y(1S),Y(2S),Y(3S). I report a search for exclusive photoproduction of Z-bosons,
and the status of searches for exclusive two-photons: p+pbar -->
p+gamma+gamma+pbar. These measurements constrain the cross section sigma(p+p to
p+H+p) at the LHC.Comment: 7 pages, 2 figures, Talk at 13th Conference on Elastic and
Diffractive Scattering, June 200
Precision proton spectrometers for CMS
We plan to add high precision tracking- and timing-detectors at z = +/- 240 m
to CMS to study exclusive processes p + p -- p + X + p at high luminosity. This
enables the LHC to be used as a tagged photon-photon collider, with X = l+l-
and W+W-, and as a "tagged" gluon-gluon collider (with a spectator gluon) for
QCD studies with jets. A second stage at z = 240 m would allow observations of
exclusive Higgs boson production.Comment: Presented at EDS Blois 2013 (arXiv:1309.5705
Double Pomeron Exchange: from the ISR to the LHC
I discuss Double Pomeron Exchange processes from their first observation at
the CERN Intersecting Storage Rings, focusing on glueball searches, through the
observations of exclusive chi_c, photon-photon, and di-jets at the Tevatron, to
prospects at the LHC for exclusive Higgs boson production.Comment: 5 pages, no figures, talk at Diffraction 2010, Otranto, Italy
(September 2010
Fast timing detectors for forward protons at the LHC
I discuss the development of high precision timing detectors for high
momentum protons at the LHC, and their application in studying exclusive Higgs
boson production.Comment: 5 pages, talk at Workshop on Timing Detectors, Krakow, Dec 201
Double Pomeron Physics at the LHC
I discuss central exclusive production, otherwise known as Double Pomeron
Exchange, DPE, from the ISR through the Tevatron to the LHC. There I emphasize
the interest of exclusive Higgs and WW/ZZ production.Comment: Contribution to DIS05. 6 pages, no fig
- …