1,574 research outputs found
Results on ultra-peripheral interactions in Pb-Pb and p-Pb collisions in ALICE
Ultra-relativistic heavy ions generate strong electromagnetic fields which
offer the possibility to study -nucleus and -proton
interactions at the LHC in the so called ultra-peripheral collisions (UPC).
Here we report ALICE results on J/psi photoproduction measured in Pb-Pb
collisions at = 2.76 TeV and in p-Pb collisions at
= 5.02 TeV.Comment: Presented at EDS Blois 2013 (arXiv:1309.5705
Study of neutrino induced upgoing muon energy
An estimate of the energy of neutrino-induced muons in MACRO is provided by a multiple Coulomb scattering measurement. The MACRO original upward-muon data sample has been subdivided according to the reconstructed muon energy. The results are interpreted in terms of neutrino oscillation
NOE: a neutrino experiment for the CERN-Gran Sasso Long Base line project
The project of a large underground experiment (NOE) devoted to long baseline
neutrino oscillation measurement is presentedComment: 7 pages, 9 figures, Talk at 5th International Workshop on Tau Lepton
Physics (TAU98), To be published in Nucl. Phys. B, Proc. Supp
Review of Cosmic Ray experiments with underground detectors
The most important underground detectors addressing Cosmic Ray physics are
described, with a special emphasis on the description of the used technology.Comment: Invited talk at 6th International Conference on advanced Technology
and Particle Physics, Villa Olmo, Como, Italy, October 5-9, 1998, To be
published in Nucl. Phys. B, Proc. Supp
Performance of a large limited streamer tube cell in drift mode
The performance of a large (3x3 ) streamer tube cell in drift mode is
shown. The detector space resolution has been studied using cosmic muons
crossing an high precision silicon telescope. The experimental results are
compared with a GARFIELD simulation.Comment: 18 pages, 7 figures. Accepted by Nucl. Instr. and Methods
The Physics of Ultraperipheral Collisions at the LHC
We discuss the physics of large impact parameter interactions at the LHC:
ultraperipheral collisions (UPCs). The dominant processes in UPCs are
photon-nucleon (nucleus) interactions. The current LHC detector configurations
can explore small hard phenomena with nuclei and nucleons at photon-nucleon
center-of-mass energies above 1 TeV, extending the range of HERA by a
factor of ten. In particular, it will be possible to probe diffractive and
inclusive parton densities in nuclei using several processes. The interaction
of small dipoles with protons and nuclei can be investigated in elastic and
quasi-elastic and production as well as in high
production accompanied by a rapidity gap. Several of these phenomena
provide clean signatures of the onset of the new high gluon density QCD regime.
The LHC is in the kinematic range where nonlinear effects are several times
larger than at HERA. Two-photon processes in UPCs are also studied. In
addition, while UPCs play a role in limiting the maximum beam luminosity, they
can also be used a luminosity monitor by measuring mutual electromagnetic
dissociation of the beam nuclei. We also review similar studies at HERA and
RHIC as well as describe the potential use of the LHC detectors for UPC
measurements.Comment: 229 Pages, 121 figure
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