Extending the study of the Higgs sector at the LHC by proton tagging

Kaǐdalov, A. B.; Khoze, V.A.; Martin, A.; Ryskin, M.G.

doi:10.1140/epjc/s2003-01566-8

Cited by 124 publications

(212 citation statements)

References 37 publications

(99 reference statements)

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“…Studies in [16,28] have considered these uncertainties in detail and they indicate a factor 2 to 3 uncertainty in the total rate. The main uncertainties arise from the lack of a detailed understanding of the luminosity of the fusing gluons (which is computed using unintegrated gluon densities) and from the difficulty to compute the gap survival factor.…”

Section: Jhep04(2008)090mentioning

confidence: 99%

Reinstating the `no-lose' theorem for NMSSM Higgs discovery at the LHC

Forshaw¹,

Gunion²,

Hodgkinson³

et al. 2008

J. High Energy Phys.

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The simplest supersymmetric model that solves the µ problem and in which the GUT-scale parameters need not be finely tuned in order to predict the correct value of the Z boson mass at low scales is the Next-to-Minimal Supersymmetric Standard Model (NMSSM). However, in order that fine tuning be absent, the lightest CP-even Higgs boson h should have mass ∼ 100 GeV and SM couplings to gauge bosons and fermions. The only way that this can be consistent with LEP limits is if h decays primarily via h → aa → τ + τ − τ + τ − or 4j but not 4b, where a is the lighter of the two pseudo-scalar Higgses that are present in the NMSSM. Interestingly, m a < 2m b is natural in the NMSSM with m a > 2m τ somewhat preferred. Thus, h → τ + τ − τ + τ − becomes a key mode of interest. Meanwhile, all other Higgs bosons of the NMSSM are typically quite heavy. Detection of any of the NMSSM Higgs bosons at the LHC in this preferred scenario will be very challenging using conventional channels. In this paper, we demonstrate that the h → aa → τ + τ − τ + τ − decay chain should be visible if the Higgs is produced in the process pp → p + h + p with the final state protons being measured using suitably installed forward detectors. Moreover, we show that the mass of both the h and the a can be determined on an event-by-event basis.

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Section: Jhep04(2008)090mentioning

confidence: 99%

Reinstating the `no-lose' theorem for NMSSM Higgs discovery at the LHC

Forshaw¹,

Gunion²,

Hodgkinson³

et al. 2008

J. High Energy Phys.

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“…In this section we briefly review the main features of the standard QCD approach [5][6][7][8][9][10][11] to the hard part of the exclusive Higgs boson production in pp collisions.…”

Section: The Hard Amplitude For Exclusive Higgs Productionmentioning

confidence: 99%

“…In the series of papers [5][6][7][8][9][10][11], the authors discussed extensively the theoretical and phenomenological aspects of the exclusive production of heavy particle in pp collisions in perturbative QCD, and their approach will be used as the basis of our study. The mechanism of the considered process is illustrated in the diagram in Fig.…”

Section: Introductionmentioning

confidence: 99%

Exclusive Higgs boson production at the CERN LHC: Hard rescattering corrections

Bartels¹,

Bondarenko²,

Kutak

et al. 2006

Phys. Rev. D

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We examine, as a correction to the central exclusive Higgs boson production in pp collisions at the Large Hadron Collider, the rescattering of gluonic ladders off the proton. As usual, at the lowest order the hard part of this process can be described as a fusion of two hard gluonic ladders. We calculate corrections to this hard amplitude which are due to rescattering of these ladders. These corrections, which contain high mass diffractive excitations of the proton, have not yet been taken into account by the usual soft survival probabilities. We find that the correction due to the exchange of a single hard rescattering is negative, large, and infrared sensitive. As a first step towards a more reliable description we therefore replace the rescattering exchange by a unitarized amplitude using the Balitsky-Kovchegov equation which generates the saturation scale Q s x. We also include a soft gap survival probability factor. We discuss the results and outline possible future strategies.

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“…The physics program of this new instrumentation covers soft and hard diffraction, high energy photon-induced interactions, low-x dynamics with forward jet studies, large rapidity gaps between forward jets, and luminosity monitoring [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. One of the main features of these forward detectors is to tag the protons with some momentum fraction loss, ¼ ðjpj À jp 0 jÞ=jpj.…”

Section: Introductionmentioning

confidence: 99%