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

Banerjee, Pulak; Dhani, Prasanna K.; Kumar, M. C.; Mathews, Prakash; Ravindran, V.

doi:10.1103/physrevd.97.094028

Cited by 16 publications

(11 citation statements)

References 58 publications

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“…5] are computed. The details of computational procedure can be found in [57,58]. Beyond the leading order (LO), the partonic channels consists of one-and two-loop virtual subprocesses, realvirtual and single and double-real emissions, some of which are presented in Figs.…”

Section: A Methodologymentioning

confidence: 99%

NNLO QCD⊕QED corrections to Higgs production in bottom quark annihilation

et al. 2019

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We present next-to-next-to leading order (NNLO) quantum electrodynamics (QED) corrections to the production of the Higgs boson in bottom quark annihilation at the Large Hadron Collider (LHC) in the five flavor scheme. We have systematically included the NNLO corrections resulting from the interference of quantum chromodynamics (QCD) and QED interactions. We have investigated the infrared (IR) structure of the bottom quark form factor up to two-loop level in QED and in QCD × QED using K þ G equation. We find that the IR poles in the form factor are controlled by the universal cusp, collinear and soft anomalous dimensions. In addition, we derive the QED as well as QCD × QED contributions to soft distribution function as well as to the ultraviolet renormalization constant of the bottom Yukawa coupling up to second order in strong coupling and fine structure constant. Finally, we report our findings on the numerical impact of the NNLO results from QED and QCD × QED at the LHC energies taking into account the dominant NNLO QCD corrections.

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Section: A Methodologymentioning

confidence: 99%

NNLO QCD⊕QED corrections to Higgs production in bottom quark annihilation

et al. 2019

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“…There it has been found that the NNLO correction changes the cross-section by 21% over NLO results and constrains the scale uncertainty to 1.6%. Similar accuracy is also available for non-universal spin-2 production [82] where spin-2 couples with different coupling to the SM fields. The first attempt in calculating the SV corrections beyond NNLO can be seen [83] in the context of ADD model in DY invariant mass distribution after the completion of three-loop quark and gluon form factor [84].…”

Section: Introductionmentioning

confidence: 92%

Resummed inclusive cross-section in Randall-Sundrum model at NNLO+NNLL

Das

Kumar

Samanta

2020

J. High Energ. Phys.

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The complete next-to-next-to leading order (NNLO) QCD correction has been studied to the di-lepton invariant mass distribution within the Randall-Sundrum (RS) framework. In addition, the soft-virtual (SV) cross-section at next-to-next-to-next-to leading order (N3LO) as well as threshold resummation to next-to-next-to leading logarithms (NNLL) level have been presented. The analytical coefficient for SV production has been obtained up to three loops very recently along with the process-dependent coefficients needed to perform resummation up to NNLL. These coefficients are universal for any universal spin-2 model where spin-2 particle couples to the Standard Model (SM) particles with equal strength. We use these coefficients in predicting N3LO SV results as well as matched NNLO+NNLL results for invariant mass distribution for Drell-Yan (DY) production in RS model. We performed a detailed phenomenological analysis and present our results in terms of mass dependent K-factors for the 13 TeV centre-of-mass energy at the Large Hadron Collider (LHC) for the search of such RS Kaluza-Klein (KK) resonances. The NNLO cross-section adds about 21% correction to the next-to-leading order (NLO) results. We found that the SV correction at the N3LO order decreases the cross-section by 0.7% near the first KK resonance (M1 = 1500 GeV) whereas the resummed result shows an increment over NNLO by 7% of LO. We performed a detailed analysis including scale variation and parton distribution function (PDF) variations. These new results provide an opportunity to stringently constrain the parameters of the model in particular in the search of heavy spin-2 resonances at the LHC.

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“…This necessitates further higher order QCD corrections for this model. The first complete next-to-next-to leading order (NNLO) computation has been performed [15] in the dilepton channel. A detailed analysis has been presented there along with the comparison with universal scenario.…”

Section: Jhep04(2021)111mentioning

confidence: 99%

“…All the relevant anomalous dimensions (γ IJ ) are extracted to three loops [15] from the bare quark and gluon form factors and by simply claiming the universality of the infrared divergences at the same order. For the sake of completeness we have collected those in the appendix A.…”

Section: Jhep04(2021)111mentioning

confidence: 99%

Precision QCD phenomenology of exotic spin-2 search at the LHC

Das

Kumar

Samanta

2021

J. High Energ. Phys.

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The complete next-to-next-to leading order (NNLO) QCD correction matched with next-to-next-to leading logarithm (NNLL) has been studied for Drell-Yan production via spin-2 particle at the Large hadron collider (LHC). We consider generic spin-2 particle which couples differently to quarks and gluons (non-universal scenario). The threshold enhanced analytical coefficient has been obtained up to third order using the universal soft function and the process dependent form factors at the same order. We performed a detailed phenomenological analysis and gave a prediction for the 13 TeV LHC for the search of such BSM signature. We found that the resummed result gives sizeable corrections over a wide range of invariant mass of the lepton pair. The scale variation also stabilizes at this order and reduces to 4%. As a by-product, we also provide ingredients for third-order soft-virtual (SV) prediction as well as resummation and study the impact on LHC searches.

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

Cited by 16 publications

References 58 publications

NNLO QCD⊕QED corrections to Higgs production in bottom quark annihilation

NNLO QCD⊕QED corrections to Higgs production in bottom quark annihilation

Resummed inclusive cross-section in Randall-Sundrum model at NNLO+NNLL

Precision QCD phenomenology of exotic spin-2 search at the LHC

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