The FP420 R&amp;D project: Higgs and New Physics with forward protons at the LHC

Albrow, M.; Appleby, R. B.; Arneodo, M.; Атоян, Г.; Azhgirey, I.; Barlow, R. J.; Bayshev, I.; Beaumont, W. Worby; Bonnet, L.; Brandt, A.; Bussey, P.; Buttar, C. M.; Butterworth, J. M.; Carter, M.; Cox, B.; Dattola, D.; Via, C. Da; Favereau, J. de; d’Enterria, D.; Remigis, P. De; Roeck, A. De; Wolf, E. A. De; Duarte, Pedro; Ellis, John; Florins, B.; Forshaw, Jeffrey R.; Freestone, J.; Goulianos, K.; Gronberg, J.; Grothe, M.; Gunion, J.F.; Hasi, J.; Heinemeyer, S.; Hollar, J.; Houston, S.; Issakov, Vadim; Jones, R.M.; Kelly, M.; Kenney, C.; Хозе, В. А.; Kolya, S. D.; Konstantinidis, N.; Kowalski, H.; Larsen, H.; Lemaı̂tre, V.; Liu, S.-L.; Lyapine, A.; Loebinger, F. K.; Marshall, R.; Martin, A.; Monk, J.; Nasteva, I.; Nemegeer, P.; Obertino, M. M.; Orava, R.; O’Shea, V.; Ovyn, S.; Pal, A.; Parker, S. I.; Pater, J. R.; Perrot, A. L.; Pierzchała, T.; Pilkington, A. D.; Pinfold, J. L.; Piotrzkowski, K.; Plano, W. G.; Poblaguev, A.; Popov, V.; Potter, K.; Rescia, S.; Roncarolo, Federico; Rostovtsev, A.; Rouby, X.; Ruspa, M.; Ryskin, M. G.; Santoro, A.; Schul, N.; Sellers, G.; Solano, A.; Spivey, S.; Stirling, W.J.; Swoboda, D.; Taševský, M.; Thompson, R. J.; Tsang, T.; Mechelen, P. Van; Pereira, A. Vilela; Watts, S.; Warren, M.; Weiglein, G.; Wengler, T.; White, S.; Winter, B. T.; Yao, Y.; Zaborov, D.; Zampieri, A.; Zeller, M.; Zhokin, A.

doi:10.1088/1748-0221/4/10/t10001

Cited by 148 publications

(204 citation statements)

References 150 publications

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“…It is expected that at the LHC the addition of forward proton taggers [29] will enhance the discovery and physics potential of the ATLAS, CMS, and ALICE detectors [30][31][32]. One of the possible scenarios which could be analyzed is that proposed by Randall and Sundrum [2], which predicts the radion as the lowest gravitational excitation in order to stabilize the size of the extra dimension.…”

Section: Discussionmentioning

confidence: 99%

Radion production in exclusive processes at CERN LHC

Gonçalves

Sauter

2010

Phys. Rev. D

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In the Randall-Sundrum (RS) scenario the compactification radius of the extra dimension is stabilized by the radion, which is a scalar field lighter than the graviton Kaluza-Klein states. It implies that the detection of the radion will be the first signature of the stabilized RS model. In this paper we study the exclusive production of the radion in electromagnetic and diffractive hadron - hadron collisions at the LHC. Our results demonstrate that the diffractive production of radion is dominant and should be feasible of study at CERN LHC.Comment: 6 pages, 3 figures, 1 tabl

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Section: Discussionmentioning

confidence: 99%

Radion production in exclusive processes at CERN LHC

Gonçalves

Sauter

2010

Phys. Rev. D

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“…The absence of a shower would indicate a rapidity gap and be helpful in increasing the purity of a CEP sample. More ambitiously, the deployment of semi-conductor detectors very close to the beam, within Roman pots, several hundred meters away from the interaction point, as proposed for other LHC experiments [613] would also be beneficial for LHCb. The ability to measure the directions of the deflected protons in the CEP interaction provides invaluable information in determining the quantum numbers of the centrally produced state.…”

Section: Central Exclusive Productionmentioning

confidence: 99%

Implications of LHCb measurements and future prospects

Bharucha¹,

Bigi²,

Bobeth³

et al. 2013

Eur. Phys. J. C

171

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region at a hadron collider. This document discusses the implications of these first measurements on classes of extensions to the Standard Model, bearing in mind the interplay with the results of searches for on-shell production of new particles at ATLAS and CMS. The physics potential of an upgrade to the LHCb detector, which would allow an order of magnitude more data to be collected, is emphasised.

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“…Well defined final states can be then selected, and precisely reconstructed. Moreover, detection of the two final state protons, scattered at almost zerodegree angle, in the dedicated very forward detectors (VFDs), provides another striking signature, effective also at high luminosity and with large event pile-up [2,3]. In addition, the photon energies can be then measured and used for the event kinematics reconstruction.…”

mentioning

confidence: 99%

Sensitivity to anomalous quartic gauge couplings in photon-photon interactions at the LHC

Pierzchała

Piotrzkowski

2008

Nuclear Physics B - Proceedings Supplements

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A dW γγ dW γγ .A set of VFDs at 220 m or 420 m from the LHC interaction points will be capable of tagging photon interactions within the wide photon energy range of 20 GeV < E γ < 900 GeV [5,6]. In Fig. 1 also the γγ luminosity spectrum is shown assuming double tagging (i.e. requesting both forward protons to be detected). One should note that apart from such elastic two-photon processes where both protons have survived the interaction, the inelastic production can also be considered, s W0 σ γγ dL γγ s = 14 TeV the EP predicts the photon-photon luminosity spectrum as shown in Fig. 1, where dL γγ /dW γγ is defined by the relation between the proton-proton and γγ cross-sections assuming a minimal center-of-mass energy W 0 :The cross sections of two-photon pair production are in general determined by the mass, spin and charge of the produced particles, so the rate of produced particles at the LHC can be well predicted using the Equivalent Photon Approximation for the equivalent photon fluxes [4]. For proton-proton collisions at √The exclusive two-photon production at the LHC of pairs of W and Z bosons provides a novel and unique testground for the electroweak gauge boson sector. In particular it offers, thanks to high γγ center-of-mass energies, large and direct sensitivity to the anomalous quartic gauge couplings otherwise very difficult to investigate at the LHC. An initial analysis has been performed assuming leptonic decays and generic acceptance cuts. Simulation of a simple counting experiment has shown for the integrated luminosity of 10 fb −1 at least four thousand times larger sensitivity to the genuine quartic couplings, a W 0 , a Z 0 , and a W C and a Z C , than those obtained at LEP. The impact of the unitarity constraints on the estimated limits has been studied using the dipole form-factors. Finally, differential distributions of the decay leptons have been provided to illustrate the potential for further improvements of the sensitivities. LHC as a photon colliderThe γγ exclusive production of pairs of charged particles offers interesting potential for signals of new physics at the LHC. In a recent paper [1], the initial comprehensive studies of high energy photon interactions at the LHC were reported. In the present contribution, the selected results on the gauge boson pairs discussed in Ref.[1] are introduced and supplemented by new results.The exclusive two-photon production, pp → pXp, provides clean experimental conditions, thanks to absence of the proton remnants. Well defined final states can be then selected, and precisely reconstructed. Moreover, detection of the two final state protons, scattered at almost zerodegree angle, in the dedicated very forward detectors (VFDs), provides another striking signature, effective also at high luminosity and with large event pile-up [2,3]. In addition, the photon energies can be then measured and used for the event kinematics reconstruction. Finally, virtualities of the exchanged photons are on average very small, and are limited from above due to the proton...

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The FP420 R&D project: Higgs and New Physics with forward protons at the LHC

Cited by 148 publications

References 150 publications

Radion production in exclusive processes at CERN LHC

Radion production in exclusive processes at CERN LHC

Implications of LHCb measurements and future prospects

Sensitivity to anomalous quartic gauge couplings in photon-photon interactions at the LHC

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