Search

We use fast silicon detectors and the fast sampling method originally developed for high energy physics for two applications: cosmic ray measurements in collaboration with NASA and dose measurements during flash beam cancer treatment. The cosmic ray measurement will benefit from the fast sampling method to measure the Bragg peak where the particle stops in the silicon detector and the dose measurement is performed by counting the number of particles that enter the detector. [ABSTRACT FROM AUTHOR]

We study the LHC sensitivity to new broad neutral resonances produced in two-photon fusion and decaying to a top quark pair, γγ → t t ¯ . This is probed in central exclusive t t ¯ production in proton-proton collisions, pp → pt t ¯ p . We use the tagging of the intact protons by PPS (CMS) and AFP (ATLAS) and consider the semi-leptonic t t ¯ channel. The sensitivity is also mapped onto a set of dimension-8 γγt t ¯ operators in the large mass limit. Using the kinematical correlations between the intact protons and the reconstructed t t ¯ system, we obtain a sensitivity to the couplings of the dimension-8 operators of 1.4 10−11 GeV−4 at 95% CL. The sensitivity to the anomalous couplings is significantly improved down to about 7 10−12 GeV−4 if the proton time-of-flight is known with a precision of 20 ps in future measurements. The 95% CL sensitivity to broad neutral resonances reaches masses of order 1500 GeV when using timing information. [ABSTRACT FROM AUTHOR]

We present the project to install new forward proton detectors in the CMS and ATLAS experiments called CT-PPS and AFP respectively. [ABSTRACT FROM AUTHOR]

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. [ABSTRACT FROM AUTHOR]