Forward Physics at the LHC: within and beyond the Standard Model

d’Enterria, D.; Jean-Philippe, Lansberg; Matagne, Nicolas

doi:10.1063/1.2987191

Cited by 6 publications

(6 citation statements)

References 29 publications

(48 reference statements)

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“…We conclude this section by recalling that dynamical effects of high parton densities have been studied [10,44] as potential contributions to forward jet events. We note that if such effects show up at the LHC, the unintegrated formulation discussed above would likely be the natural framework to implement this dynamics at parton-shower level.…”

Section: Jhep09(2009)121mentioning

confidence: 99%

“…The forward-physics program involves a wide range of topics, from new particle discovery processes [3,8,9] to new aspects of strong interaction physics [7,10,11] to heavy-ion collisions [12,13]. Owing to the large center-of-mass energy and the unprecedented experimental coverage at large rapidities, it becomes possible for the first time to investigate the forward region with high-p T probes.…”

Section: Introductionmentioning

confidence: 99%

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Forward jet production at the Large Hadron Collider

Deák

Hautmann

Jung

et al. 2009

J. High Energy Phys.

154

196

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At the Large Hadron Collider (LHC) it will become possible for the first time to investigate experimentally the forward region in hadron-hadron collisions via high-p T processes. In the LHC forward kinematics QCD logarithmic corrections in the hard transverse momentum and in the large rapidity interval may both be quantitatively significant. We analyze the hadroproduction of forward jets in the framework of QCD high-energy factorization, which allows one to resum consistently both kinds of corrections to higher orders in QCD perturbation theory. We compute the short-distance matrix elements needed to evaluate the factorization formula at fully exclusive level. We discuss numerically dynamical features of multi-gluon emission at large angle encoded in the factorizing high-energy amplitudes.

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Section: Jhep09(2009)121mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Forward jet production at the Large Hadron Collider

Deák

Hautmann

Jung

et al. 2009

J. High Energy Phys.

154

196

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show abstract

“…Soft diffraction events contribute with (∼20%) of the total inelastic proton-proton cross section and therefore must be taken into account in order to keep the background of many processes in the LHC [2,3] under control. The hard diffractive processes, responsible for the production of the states with high mass, or high p T (for example, QQ, jets, W, and Z), can be calculated from perturbative QCD.…”

Section: Introductionmentioning

confidence: 99%

Heavy meson photoproduction in peripheral AA collisions

Martins

2018

Phys. Rev. D

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The exclusive photoproduction of the heavy vector mesons ψ and Y is investigated in peripheral Pb-Pb collisions for the energies available at the LHC, ffiffi ffi s p ¼ 2.76 TeV and ffiffi ffi s p ¼ 5.02 TeV. To evaluate the robustness of the light-cone color dipole formalism, previously tested in the ultraperipheral regime, the rapidity distribution and the nuclear modification factor (R AA ) are calculated for the three centrality classes: 30%-50%, 50%-70%, and 70%-90%. The ultraperipheral to peripheral regime transition was carried out by sophisticating the photon flux description and the photonuclear cross section, taking into account the effective interaction area. In our calculations, three scenarios were considered: (scenario 1) the direct application of the usual photon flux and of the photonuclear cross section with no relevant change in relation to the ultraperipheral collision (UPCs), (scenario 2) the application of an effective photon flux keeping the photonuclear cross section unchanged, and (scenario 3) also considering an effective photonuclear cross section. The results obtained with the three different scenarios were compared with the ALICE measurements, showing a better agreement with the data (only J=ψ at the moment) in the more complete approach (scenario 3), mainly in the more central regions (30%-50% and 50%-70%) where the uncertainty is smaller.

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“…Forward physics is a subject of research both at Relativistic Heavy Ion Collider (RHIC) [1] and at LHC [2] and the new experimental data offer an opportunity to improve our knowledge on how parton distribution functions (of free protons and of bound nucleons) will behave as smaller momentum fractions x are reached. One of the issues is where saturation-such as given by the color glass condensate [3,4]-is present.…”

Section: Introductionmentioning

confidence: 99%

“…One of the issues is where saturation-such as given by the color glass condensate [3,4]-is present. When comparing nuclear collisions to proton-proton collisions, phenomena like PHENIX photon suppression [5], Cronin effect [6], and others [1,2], one can ask how nuclear effects at small x can change cross sections and which modifications seen in nuclear collisions can be accounted to initial or to final state effects.…”

Section: Introductionmentioning

confidence: 99%

Backward dilepton production in color dipole and parton models

Oliveira¹

2010

Phys. Rev. D

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The Drell-Yan dilepton production at backward rapidities is studied in proton-nucleus collisions at Relativistic Heavy Ion Collider and LHC energies by comparing two different approaches: the k T factorization at next-to-leading order with intrinsic transverse momentum and the same process formulated in the target rest frame, i.e., the color dipole approach. Our results are expressed in terms of the ratio between pðdÞ À A and p À p collisions as a function of transverse momentum and rapidity. Three nuclear parton distribution functions are used: EKS (Eskola, Kolhinen, and Ruuskanen), EPS08, and EPS09 and, in both approaches, dileptons show sensitivity to nuclear effects, specially regarding the intrinsic transverse momentum. Also, there is room to discriminate between formalisms: the color dipole approach lacks soft effects introduced by the intrinsic k T . Geometric scaling GBW (Golec-Biernat and Wusthoff) and BUW (Boer, Utermann, and Wessels) color dipole cross section models and also a DHJ (Dumitru, Hayashigaki, and Jalilian-Marian) model, which breaks geometric scaling, are used. No change in the ratio between collisions is observed, showing that this observable is not changed by the particular shape of the color dipole cross section. Furthermore, our k T factorization results are compared with color glass condensate results at forward rapidities: the results agree at Relativistic Heavy Ion Collider although disagree at LHC, mainly due to the different behavior of target gluon and quark shadowing.

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Forward Physics at the LHC: within and beyond the Standard Model

Cited by 6 publications

References 29 publications

Forward jet production at the Large Hadron Collider

Forward jet production at the Large Hadron Collider

Heavy meson photoproduction in peripheral AA collisions

Backward dilepton production in color dipole and parton models

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