NNLO QCD corrections to the Drell–Yan cross section in models of TeV-scale gravity

Ahmed, Taushif; Banerjee, Pulak; Dhani, Prasanna K.; Kumar, M. C.; Mathews, Prakash; Rana, N. C.; Ravindran, V.

doi:10.1140/epjc/s10052-016-4587-6

Cited by 20 publications

(26 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where the SM results are known exactly upto NNLO level for long time (see [35][36][37][38]) and result at N 3 LO in the soft gluon approximation is also available, see [39]. For the spin-2 case with universal coupling, namely κ G = κ Q = κ, the results upto NNLO level can be found in [13,28]. In this article, we have extended this computation to NNLO QCD for the case of non-universal couplings i.e., when κ G and κ Q are different.…”

Section: Lepton Pair Invariant Mass Distribution Dσ/dqmentioning

confidence: 99%

“…This involved various steps: to begin with NLO corrections were evaluated [13], followed by the two loop quark and gluon form factors [26], which lead to the computation of NNLO QCD corrections to the graviton production in models of TeV-scale gravity, within the soft-virtual approximation [27]. Finally the complete NNLO QCD corrections to the production of di-leptons at hadron colliders in large extra dimension models with spin-2 particles are reported in [28].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

NNLO QCD corrections to production of a spin-2 particle with nonuniversal couplings in the Drell-Yan process

et al. 2018

Self Cite

View full text Add to dashboard Cite

We study the phenomenological impact of the interaction of spin-2 fields with those of the Standard Model in a model independent framework up to next-to-next-to-leading order in perturbative quantum chromodynamics. We use the invariant mass distribution of the pair of leptons produced at the Large Hadron Collider to demonstrate this. A minimal scenario where the spin-2 fields couple to two gauge invariant operators with different coupling strengths has been considered. These operators not being conserved show very different ultraviolet behavior increasing the searches options of spin-2 particles at the colliders. We find that our results using the higher order quantum corrections stabilize the predictions with respect to renormalization and factorization scales. We also find that corrections are appreciable which need to be taken into account in such searches at the colliders.

show abstract

Section: Lepton Pair Invariant Mass Distribution Dσ/dqmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

NNLO QCD corrections to production of a spin-2 particle with nonuniversal couplings in the Drell-Yan process

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…The computation of S Λ,(i) a for a = g, q; Λ = G, J, GJ, JG, i = 0, 1, 2 closely follows the steps used in [67][68][69][70][71][72][73][74]. We briefly describe the main steps involved.…”

Section: Matrix Elementsmentioning

confidence: 99%

Two loop QCD corrections for the process pseudo-scalar Higgs → 3 partons

Banerjee

Dhani

Ravindran

2017

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

We present virtual contributions up to two loop level in perturbative Quantum Chromodynamic (QCD) to the decay of pseudo-scalar Higgs boson (A) to three gluons (g) and also to quark (q), anti-quark (q) and a gluon. With appropriate crossing, they are well suited for predicting the differential distribution of A in association with a jet in hadron colliders up to next-to-next-to-leading order (NNLO) in strong coupling constant and also for the subsequent decay of A to hadrons. We use effective field theory approach to integrate out the top quarks in the heavy top limit. The resulting theory involves two pseudo-scalar composite operators describing the interaction of A with gluons as well as with quark and anti-quark. We perform our computation in dimensional regularisation and use minimal subtraction (M S) scheme to renormalise strong coupling constant as well as the composite operators. The ultraviolet (UV) finite amplitudes contain infrared (IR) divergences that are found to be in agreement with the predictions by Catani. For both the amplitudes namely A → ggg and A → qqg, the leading transcendental terms at one and two loops are found to be identical to those in a three point form factor (FF) of the half-BPS operator in N = 4 Supersymmetric Yang Mills (SYM) theory when the QCD color factors are adjusted in a specific way. We present our results in terms of harmonic polylogs well suited for further numerical study.

show abstract

“…ADD and RS for most of the di-final state process [28][29][30][31][32][33][34][35] and this has been extended to NLO+PS accuracy [36][37][38]. Recently, for the di-lepton production to NNLO order in QCD for the ADD model was computed [39].…”

Section: Introductionmentioning

confidence: 99%

Three loop form factors of a massive spin-2 particle with nonuniversal coupling

et al. 2017

Self Cite

View full text Add to dashboard Cite

We investigate the interaction of spin-2 fields with those of the Standard Model in a model independent framework. We have considered interactions where the spin-2 fields couple to two sets of gauge invariant tensorial operators that are not conserved unlike the energy momentum tensor with different coupling strengths. Such interactions not only change the ultraviolet behaviour of the couplings but also expand the scope of the searches of spin-2 particles at the colliders. We present all the relevant renormalisation constants up to three loop level in QCD and also the form factors that contribute to potential observables. This sets the ground to investigate the phenomenological consequences of these interactions with spin-2 fields through more than one tensorial operator.

show abstract

NNLO QCD corrections to the Drell–Yan cross section in models of TeV-scale gravity

Cited by 20 publications

References 90 publications

NNLO QCD corrections to production of a spin-2 particle with nonuniversal couplings in the Drell-Yan process

NNLO QCD corrections to production of a spin-2 particle with nonuniversal couplings in the Drell-Yan process

Two loop QCD corrections for the process pseudo-scalar Higgs → 3 partons

Three loop form factors of a massive spin-2 particle with nonuniversal coupling

Contact Info

Product

Resources

About