CERN Accelerating science

Article
Report number	arXiv:0806.0302 ; FERMILAB-FN-0825-E
Title	The FP420 R&D Project: Higgs and New Physics with forward protons at the LHC
Related title	cern
Author(s)	Albrow, M.G. (Fermilab) ; Appleby, R.B. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Arneodo, Michele (INFN, Turin) ; Atoian, G. (Yale U.) ; Barlow, R. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Beaumont, W. (Antwerp U., WISINF) ; Bonnet, L. (Louvain U.) ; Brandt, A. (Texas U., Arlington) ; Bussey, P. (Glasgow U.) ; Buttar, C. (Glasgow U.) ; Butterworth, J.M. (University Coll. London) ; Carter, M. (Mullard Space Sci. Lab.) ; Cox, B.E. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Dattola, D. (INFN, Turin) ; Da Via, C. (Manchester U.) ; de Favereau, J. (Louvain U.) ; D'Enterria, David (CERN) ; De Remigis, P. (INFN, Turin) ; De Roeck, Albert (CERN) ; De Wolf, Eddi A. (Antwerp U., WISINF) ; Duarte, P. (CERN) ; Ellis, John R. (CERN) ; Florins, B. (Louvain U.) ; Forshaw, J.R. (Manchester U.) ; Freestone, J. (Manchester U.) ; Goulianos, Konstantin A. (Rockefeller U.) ; Gronberg, J. (LLNL, Livermore) ; Grothe, M. (Wisconsin U., Madison) ; Gunion, J.F. (UC, Davis) ; Hasi, J. (Manchester U.) ; Heinemeyer, S. (Cantabria Inst. of Phys.) ; Hollar, Jonathan J. (LLNL, Livermore) ; Houston, S. (Glasgow U.) ; Issakov, V. (Yale U.) ; Jones, Roger M. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Kelly, M. (Manchester U.) ; Kenney, C. (Stanford U., Phys. Dept.) ; Khoze, V.A. (Durham U., IPPP) ; Kolya, S. (Manchester U.) ; Konstantinidis, N. (University Coll. London) ; Kowalski, H. (DESY) ; Lanni, F. (Brookhaven) ; Larsen, H.E. (INFN, Turin) ; Liu, S.L. (Alberta U.) ; Lyapine, A. (University Coll. London) ; Loebinger, Frederick K. (Manchester U.) ; Marshall, R. (Manchester U.) ; Martin, A.D. (Durham U., IPPP) ; Monk, James William (University Coll. London) ; Nasteva, Irina (Manchester U.) ; Nemegeer, P. (Louvain U.) ; Obertino, M.M. (INFN, Turin) ; Orava, R. (Helsinki Inst. of Phys.) ; O'Shea, V. (Glasgow U.) ; Pal, A. (Texas U., Arlington) ; Parker, S. (Stanford U., Phys. Dept.) ; Pater, J. (Manchester U.) ; Perrot, A.L. (CERN) ; Pierzchala, T. (Louvain U.) ; Pilkington, A.D. (Manchester U.) ; Pinfold, James L. (Alberta U.) ; Piotrzkowski, Krzysztof (Louvain U.) ; Plano, W. (Manchester U.) ; Poblaguev, A. (Yale U.) ; Popov, V. (Moscow, ITEP) ; Potter, K.M. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Radeka, V. (Brookhaven) ; Rescia, S. (Brookhaven) ; Roncarolo, F. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Rostovtsev, A. (Moscow, ITEP) ; Rouby, X. (Louvain U.) ; Ruspa, M. (INFN, Turin) ; Ryskin, M.G. (Durham U., IPPP) ; Santoro, A. (Rio de Janeiro State U.) ; Schul, N. (Louvain U.) ; Sellers, G. (Cockcroft Inst. Accel. Sci. Tech. ; Manchester U.) ; Solano, A. (INFN, Turin) ; Spivey, S. (Texas U., Arlington) ; Stirling, W.J. (Durham U., IPPP) ; Swoboda, D. (CERN) ; Tasevsky, M. (Prague, Inst. Phys.) ; Thompson, R. (Manchester U.) ; Tsang, T. (Brookhaven) ; Van Mechelen, P. (Antwerp U., WISINF) ; Vilela Pereira, A. (INFN, Turin) ; Watts, S.J. (Manchester U.) ; Warren, M.R.M. (University Coll. London) ; Weiglein, G. (Durham U., IPPP) ; Wengler, T. (Manchester U.) ; White, Sebastian N. (Brookhaven) ; Winter, B. (Mullard Space Sci. Lab.) ; Yao, Y. (Alberta U.) ; Zaborov, D. (Moscow, ITEP) ; Zampieri, A. (INFN, Turin) ; Zeller, M. (Yale U.) ; Zhokin, A. (Moscow, ITEP ; Antwerp U., WISINF)
Publication	2009
Imprint	03 Jun 2008
Number of pages	176
Note	Comments: 176 pages, 129 figures. Figures compressed to marginal resolution due to arxiv.org file size requirements. A higher quality document accessible at http://www.fp420.com/papers.html 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
In:	JINST 4 (2009) T10001
DOI	10.1088/1748-0221/4/10/T10001
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
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 th e 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.
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