The Diphoton $q_T$ spectrum at N${}^3$LL${}^{\prime }$+NNLO

Abstract

We present a $q_T$-resummed calculation of diphoton production at order N${}^3$LL${}^{\prime }$+NNLO. To reach the primed level of accuracy we have implemented the recently published three-loop $\mathcal{O}({\alpha }_s^3)$ virtual corrections in the $q\bar{q}$ channel and the three-loop transverse momentum dependent beam functions and combined them with the existing infrastructure of CuTe-MCFM, a code performing resummation at order N${}^3$LL. While the primed predictions are parametrically not more accurate, one typically observes from lower orders and other processes that they are the dominant effect of the next order. We include in both the $q\bar{q}$ and loop-induced $gg$ channel the hard contributions consistently together at order ${\alpha }_s^3$ and find that the resummed $q\bar{q}$ channel without matching stabilizes indeed. Due to large matching corrections and large contributions and uncertainties from the $gg$ channel, the overall improvements are small though. We furthermore study the effect of hybrid-cone photon isolation and hard-scale choice on our fully matched results to describe the ATLAS 8 TeV data and find that the hybrid-cone isolation destroys agreement at small $q_T$.

11 pages, 6 figures; v2: matches version published in EPJC

References in corpus (16)

• Vector boson pair production at the LHC
• Drell-Yan production at small q_T, transverse parton distributions and the collinear anomaly
• Search for new phenomena in high-mass diphoton final states using 37 fb${}^{-1}$ of proton-proton collisions collected at $\sqrt{s}=13$ TeV with the ATLAS detector
• Optimisation of variables for studying dilepton transverse momentum distributions at hadron colliders
• NNLO QCD corrections to diphoton production with an additional jet at the LHC
• Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at sqrt(s) = 7 TeV
• Gluon-gluon contributions to the production of continuum diphoton pairs at hadron colliders
• Calculation of prompt diphoton production cross sections at Tevatron and LHC energies
• A Novel Technique for Studying the Z Boson Transverse Momentum Distribution at Hadron Colliders
• Fiducial $q_T$ resummation of color-singlet processes at N${}^3$LL+NNLO
• Di-photon amplitudes in three-loop Quantum Chromodynamics
• All-orders resummation for diphoton production at hadron colliders
• Precise predictions for photon pair production matched to parton showers in GENEVA
• Unpolarized Quark and Gluon TMD PDFs and FFs at N${}^3$LO
• Electroweak corrections to diphoton plus jets
• Scale and isolation sensitivity of diphoton distributions at the LHC

Cited by in corpus (2)

• Multiple soft radiation at one-loop order and the emission of a soft quark-antiquark pair
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist