The FP420 R&D Project: Higgs and New Physics with forward protons at the LHC
Abstract
We present the FP420 R&D project, which has been studying the key aspects of the development and installation of a silicon tracker and fast-timing detectors in the LHC tunnel at 420 m from the interaction points of the ATLAS and CMS experiments. These detectors would measure precisely very forward protons in conjunction with the corresponding central detectors as a means to study Standard Model (SM) physics, and to search for and characterise New Physics signals. This report includes a detailed description of the physics case for the detector and, in particular, for the measurement of Central Exclusive Production, pp --> p + phi + p, in which the outgoing protons remain intact and the central system phi may be a single particle such as a SM or MSSM Higgs boson. Other physics topics discussed are gamma-gamma and gamma-p interactions, and diffractive processes. The report includes a detailed study of the trigger strategy, acceptance, reconstruction efficiencies, and expected yields for a particular p p --> p H p measurement with Higgs boson decay in the b-bbar mode. The document also describes the detector acceptance as given by the LHC beam optics between the interaction points and the FP420 location, the machine backgrounds, the new proposed connection cryostat and the moving ("Hamburg") beam-pipe at 420 m, and the radio-frequency impact of the design on the LHC. The last part of the document is devoted to a description of the 3D silicon sensors and associated tracking performances, the design of two fast-timing detectors capable of accurate vertex reconstruction for background rejection at high-luminosities, and the detector alignment and calibration strategy.
Cite
@article{arxiv.0806.0302,
title = {The FP420 R&D Project: Higgs and New Physics with forward protons at the LHC},
author = {M. G. Albrow and R. B. Appleby and M. Arneodo and G. Atoian and I. L. Azhgirey and R. Barlow and I. S. Bayshev and W. Beaumont and L. Bonnet and A. Brandt and P. Bussey and C. Buttar and J. M. Butterworth and M. Carter and B. E. Cox and D. Dattola and C. Da Via and J. de Favereau and D. d'Enterria and P. De Remigis and A. De Roeck and E. A. De Wolf and P. Duarte and J. R. Ellis and B. Florins and J. R. Forshaw and J. Freestone and K. Goulianos and J. Gronberg and M. Grothe and J. F. Gunion and J. Hasi and S. Heinemeyer and J. J. Hollar and S. Houston and V. Issakov and R. M. Jones and M. Kelly and C. Kenney and V. A. Khoze and S. Kolya and N. Konstantinidis and H. Kowalski and H. E. Larsen and V. Lemaitre and S. -L. Liu and A. Lyapine and F. K. Loebinger and R. Marshall and A. D. Martin and J. Monk and I. Nasteva and P. Nemegeer and M. M. Obertino and R. Orava and V. O'Shea and S. Ovyn and A. Pal and S. Parker and J. Pater and A. -L. Perrot and T. Pierzchala and A. D. Pilkington and J. Pinfold and K. Piotrzkowski and W. Plano and A. Poblaguev and V. Popov and K. M. Potter and S. Rescia and F. Roncarolo and A. Rostovtsev and X. Rouby and M. Ruspa and M. G. Ryskin and A. Santoro and N. Schul and G. Sellers and A. Solano and S. Spivey and W. J. Stirling and D. Swoboda and M. Tasevsky and R. Thompson and T. Tsang and P. Van Mechelen and A. Vilela Pereira and S. J. Watts and M. R. M. Warren and G. Weiglein and T. Wengler and S. N. White and B. Winter and Y. Yao and D. Zaborov and A. Zampieri and M. Zeller and A. Zhokin},
journal= {arXiv preprint arXiv:0806.0302},
year = {2014}
}
Comments
178 pages, 128 figures. Updated Timing section. Figures compressed to marginal resolution due to arxiv.org file size requirements. A higher quality document accessible at http://www.fp420.com/papers.html