Search for technipions in exclusive production of diphotons with large invariant masses at the LHC

Lebiedowicz, Piotr; Pasechnik, Roman; Szczurek, Antoni

doi:10.1016/j.nuclphysb.2014.02.008

Cited by 43 publications

(72 citation statements)

References 78 publications

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“…Therefore it is the best suited for the study of anomalous triple and quartic boson couplings. Similarly interesting is exclusive production of diphotons, where one can study light-by-light scattering as well as effects beyond the Standard Model [54][55][56].…”

Section: Discussionmentioning

confidence: 99%

W + W − pair production in proton-proton collisions: small missing terms

Łuszczak

Szczurek

Royon

2015

J. High Energ. Phys.

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W + W − production is one of the golden channels for testing the Standard Model as well for searches beyond the Standard Model. We discuss many new subleading processes for inclusive production of W + W − pairs generally not included in the literature so far. We focus on photon-photon induced processes. We include elastic-elastic, elastic-inelastic, inelastic-elastic and inelastic-inelastic contributions. We also calculate the contributions with resolved photons including the partonic substructure of the virtual photon. Predictions for the total cross section and differential distributions in W -boson rapidity and transverse momentum as well as W W invariant mass are presented. The γγ components constitute only about 1-2 % of the inclusive W + W − cross section but increases up to about 10 % at large W ± transverse momenta, and are even comparable to the dominant qq component at large M W W , i.e. are much larger than the gg → W + W − one.

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Section: Discussionmentioning

confidence: 99%

W + W − pair production in proton-proton collisions: small missing terms

Łuszczak

Szczurek

Royon

2015

J. High Energ. Phys.

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“…Previous studies using proton-tagging at the LHC for New Physics searches can be found in refs. [3,4,[9][10][11][12][13][14][15][16][17][18][19]. We refer to [20] for a study of light-by-light scattering at the LHC without proton tagging.…”

Section: Jhep02(2015)165 1 Introductionmentioning

confidence: 99%

Light-by-light scattering with intact protons at the LHC: from standard model to new physics

Fichet

Gersdorff

Lenzi

et al. 2015

J. High Energ. Phys.

121

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Abstract:We discuss the discovery potential of light-by-light scattering at the Large Hadron Collider (LHC), induced by the Standard Model (SM) and by new exotic charged particles. Our simulation relies on intact proton detection in the planned forward detectors of CMS and ATLAS. The full four-photon amplitudes generated by any electrically charged particles of spins 1/2 and 1, including the SM processes involving loops of leptons, quarks and W bosons are implemented in the Forward Physics Monte Carlo generator. Our method provides model-independent bounds on massive charged particles, only parametrized by the spin, mass and "effective charge" Q eff of the new particle. We find that a new charged vector (fermion) with Q eff = 4 can be discovered up to m = 700 GeV (m = 370 GeV) with an integrated luminosity of 300 fb −1 at the LHC. We also discuss the sensitivities to neutral particles such as a strongly-interacting heavy dilaton and warped Kaluza-Klein gravitons, whose effects could be discovered for masses in the multi-TeV range.

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“…Experimental results on exclusive twophoton production of W + W − and + − pairs in γ γ interactions reported by the CMS and ATLAS Collaborations [9][10][11][12] have demonstrated that it is possible to measure such events with the experimental apparatus already available at the LHC, allowing for novel studies of QCD at very high energies and searches for Beyond Standard Model Physics (see, e.g., Ref. [49][50][51][52][53][54][55][56][57][58][59]). This motivates us to revisit the analysis of double vector meson production in ultra peripheral heavy ion collisions performed some time ago in Refs.…”

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confidence: 99%

Double vector meson production in $$\gamma \gamma $$ γ γ interactions at hadronic colliders

2016

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In this paper we revisit the double vector meson production in γ γ interactions at heavy ion collisions and present, by the first time, predictions for the ρρ and J/ J/ production in proton-nucleus and proton-proton collisions. In order to obtain realistic predictions for rapidity distributions and total cross sections for the double vector production in ultra peripheral hadronic collisions we take into account the description of γ γ → V V cross section at low energies as well as its behavior at large energies, associated to the gluonic interaction between the color dipoles. Our results demonstrate that the double ρ production is dominated by the low energy behavior of the γ γ → V V cross section. In contrast, for the double J/ production, the contribution associated to the description of the QCD dynamics at high energies contributes significantly, mainly in pp collisions. Predictions for the RHIC, LHC, FCC, and CEPC-SPPC energies are shown.In recent years a series of experimental results from RHIC [1,2], Tevatron [3] and LHC [4][5][6][7][8][9][10][11][12] demonstrated that the study of photon-induced interactions in hadronic colliders is feasible and that it can be used to, among other things, improve our knowledge on the nuclear gluon distribution [13][14][15][16][17][18][19], on details of QCD dynamics [20][21][22][23][24][25][26][27][28][29][30], on the mechanism of quarkonium production [29][30][31][32][33][34][35][36], on the Odderon [37,38] and on the photon flux of the proton [39,40]. These data have stimulated the development of the theoretical description of these processes as well as the proposal of new forward detectors to be installed in the LHC [41,42].The basic idea in the photon-induced processes is that an ultra relativistic charged hadron (proton or nucleus) creates strong electromagnetic fields. A photon stemming from the electromagnetic field of one of the two colliding hadrons can interact with one photon coming from the other hadron a e-mails: barros@ufpel.edu.br;victor.goncalves@thep.lu.se (photon-photon process) or it can interact directly with the other hadron (photon-hadron process) [43][44][45][46][47][48]. In these processes the total cross section can be factorized in terms of the flux of equivalent photons from the hadron projectile and the photon-photon or photon-target production cross section. In this paper we will focus on two-photon interactions in hadronic collisions. Experimental results on exclusive twophoton production of W + W − and + − pairs in γ γ interactions reported by the CMS and ATLAS Collaborations [9][10][11][12] have demonstrated that it is possible to measure such events with the experimental apparatus already available at the LHC, allowing for novel studies of QCD at very high energies and searches for Beyond Standard Model Physics (see, e.g., Ref. [49][50][51][52][53][54][55][56][57][58][59]). This motivates us to revisit the analysis of double vector meson production in ultra peripheral heavy ion collisions performed some time ago in Refs. [60][61][62...

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Search for technipions in exclusive production of diphotons with large invariant masses at the LHC

Cited by 43 publications

References 78 publications

W + W − pair production in proton-proton collisions: small missing terms

W + W − pair production in proton-proton collisions: small missing terms

Light-by-light scattering with intact protons at the LHC: from standard model to new physics

Double vector meson production in $$\gamma \gamma $$ γ γ interactions at hadronic colliders

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