The role of finite-size effects on the spectrum of equivalent photons in proton-proton collisions at the LHC

Abstract

Photon-photon interactions represent an important class of physics processes at the LHC, where quasi-real photons are emitted by both colliding protons. These reactions can result in the exclusive production of a final state $X$, $p+p\to p+p+X$. When computing such cross sections, it has already been shown that finite size effects of colliding protons are important to consider for a realistic estimate of the cross sections. These first results have been essential in understanding the physics case of heavy-ion collisions in the low invariant mass range, where heavy ions collide to form an exclusive final state like a $J/\Psi$ vector meson. In this paper, our purpose is to present some calculations that are valid also for the exclusive production of high masses final states in proton-proton collisions, like the production of a pair of $W$ bosons or the Higgs boson. Therefore, we propose a complete treatment of the finite size effects of incident protons irrespective of the mass range explored in the collision. Our expectations are shown to be in very good agreement with existing experimental data obtained at the LHC.

14 pages, 7 figures, 1 table, submitted to Phys. Lett. B

References in corpus (7)

• Herwig++ Physics and Manual
• Measurement of the total cross section from elastic scattering in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Exclusive $J/\psi$ and $\psi (2S)$ production in $pp$ collisions at $\sqrt{s}=7$ TeV
• Generalized parton distributions and rapidity gap survival in exclusive diffractive pp scattering
• FPMC: a generator for forward physics
• Peripheral, ultrarelativistic production of particles in heavy ion collisions
• Two-Photon Interactions with Nuclear Breakup in Relativistic Heavy Ion Collisions

Cited by in corpus (37)

• Scattering Light by Light at 750 GeV at the LHC
• Light-by-light scattering with intact protons at the LHC: from Standard Model to New Physics
• Lepton Pair Production Through Two Photon Process in Heavy Ion Collisions
• Exclusive physics at the LHC with SuperChic 2
• A new approach to modelling elastic and inelastic photon-initiated production at the LHC: SuperChic 4
• Observation of proton-tagged, central (semi)exclusive production of high-mass lepton pairs in pp collisions at 13 TeV with the CMS-TOTEM precision proton spectrometer
• Measurement of the exclusive $\gamma \gamma \to {\mu }^{+}{\mu }^{-}$ process in proton--proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• gamma-UPC: Automated generation of exclusive photon-photon processes in ultraperipheral proton and nuclear collisions with varying form factors
• Measurement of exclusive $\gamma \gamma \to {\ell }^{+}{\ell }^{-}$ production in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Observation and measurement of forward proton scattering in association with lepton pairs produced via the photon fusion mechanism at ATLAS
• Multiple interactions and rapidity gap survival
• Equivalent photons in proton-proton and ion-ion collisions at the LHC
• Elastic photon-initiated production at the LHC: the role of hadron-hadron interactions
• Observation of photon-induced $W^{+}{W}^{-}$ production in $pp$ collisions at $\sqrt{s}=13$ TeV using the ATLAS detector
• Challenging exclusive top quark pair production at low and high luminosity LHC
• ${\eta }_c$ production in photon - induced interactions at the LHC
• Photon-photon physics at the LHC and laser beam experiments, present and future
• Quasistable charginos in ultraperipheral proton-proton collisions at the LHC
• Rapidity gap survival factors caused by remnant fragmentation for $W^{+}{W}^{-}$ pair production via ${\gamma }^{\ast }{\gamma }^{\ast }\to W^{+}{W}^{-}$ subprocess with photon transverse momenta
• Exclusive production of heavy charged Higgs boson pairs in the $pp\to pp{H}^{+}{H}^{-}$ reaction at the LHC and a future circular collider
• $pp$ scattering at the LHC with the lepton pair production and one proton tagging
• Production of heavy charged particles in proton-proton ultraperipheral collisions at the Large Hadron Collider: survival factor
• Exclusive and diffractive ${\mu }^{+}{\mu }^{-}$ production in $pp$ collisions at the LHC
• Ultraperipheral nuclear interactions
• Electroweak, QCD and flavour physics studies with ATLAS data from Run 2 of the LHC
• Exclusive and semiexclusive production of ${\mu }^{+}{\mu }^{-}$ pairs with $\Delta$ isobars and other resonances in the final state and the size of absorption effects
• Exclusive doubly charged Higgs boson pair production in $pp$ collisions at the LHC
• LHC as a photon-photon collider: bounds on ${\Gamma }_{X\to \gamma \gamma }$
• Constraining the monochromatic gamma-rays from dark matter annihilation by the LHC
• Non-exclusive particle production by $\gamma \gamma$ interactions in $pp$ collisions at the LHC
• Thresholds of ultraperipheral processes
• Semiexclusive dilepton production in proton-proton collisions with one forward proton measurement at the LHC
• LHC as a photon-photon collider
• libepa -- a C++/Python library for calculations of cross sections of ultraperipheral collisions
• Ultraperipheral vs ordinary nuclear interactions
• Standard Model soft QCD at ATLAS and CMS
• Weak interaction corrections to muon pair production via the photon fusion at the LHC