Resummed Drell-Yan cross-section at N$^3$LL

Ajjath, A. H.; Das, Goutam; Kumar, M. C.; Mukherjee, Pooja; Ravindran, V.; Samanta, Kajal

doi:10.48550/arxiv.2001.11377

Cited by 3 publications

(3 citation statements)

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“…Finally, at the last row, we present cross sections, multiplying respective K-factors in order to take care of higher order effects. Similar K-factors are used for signal process and t t process, whereas for DY process it is taken to be 1.3 [96]. For electroweak processes, W+jets, WW+jets, WZ+jets K-factors are considered to be 1.42 [97], 1.8 [98] and 2.07 [99] respectively.…”

Section: Resultsmentioning

confidence: 99%

Light Singlino Dark Matter at the LHC

Guchait,

Roy

2020

Preprint

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Light singlino-like neutralino is found to be a very promising candidate for DM in the allowed parameter space of the NMSSM. The DM annihilation process takes place via light Higgs bosons which are natural in this model. Identifying the allowed region of parameter spaces including various constraints, the detection prospect of such light DM candidate and Higgs bosons are explored at the LHC with its high luminosity options. Light Higgs bosons and the DM candidate, the lightest singlino-like neutralino are indirectly produced at the LHC via the SM Higgs production and its subsequent decays. Jet substructure techniques are used to tag boosted Higgs. We observed that a reasonable signal significance, more than 5σ can be achieved corresponding to integrated luminosity options L =300 fb −1 and 3000 fb −1 , for the range of Higgs bosons and neutralino masses compatible with low mass DM solution.

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Section: Resultsmentioning

confidence: 99%

Light Singlino Dark Matter at the LHC

Guchait,

Roy

2020

Preprint

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“…This collinear improvement is taken into account in RESUMMINO for higgsino, gaugino and slepton pair production [38,45]. Since we have given a detailed discussion of the collinear improvement as well as the theoretical status of exponentiating contributions in the C-function [86][87][88] in a previous publication [69], we do not repeat it here. The same holds for the matching of resummed cross section σ (res.)…”

Section: Analytical Approachmentioning

confidence: 99%

Higgsino and gaugino pair production at the LHC with aNNLO+NNLL precision

Fiaschi

Klasen

2020

Phys. Rev. D

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We present a calculation of higgsino and gaugino pair production at the LHC at next-to-nextto-leading logarithmic (NNLL) accuracy, matched to approximate next-to-next-to-leading order (aNNLO) QCD corrections. We briefly review the formalism for the resummation of large threshold logarithms and highlight the analytical results required at aNNLO+NNLO accuracy. Our numerical results are found to depend on the mass and nature of the produced charginos and neutralinos. The differential and total cross sections for light higgsinos, which like sleptons are produced mostly at small x and in the s-channel, are found to be again moderately increased with respect to our previous results. The differential and total cross sections for gauginos are, however, not increased any more due to the fact that gauginos, like squarks, are now constrained by ATLAS and CMS to be heavier than about 1 TeV, so that also t-and u-channels play an important role.The valence quarks probed at large x then also induce substantially different cross sections for positively and negatively charged gauginos. The higgsino and gaugino cross sections are both further stabilized at aNNLO+NNLL with respect to the variation of renormalization and factorization scales. We also now take mixing in the squark sector into account and study the dependence of the total cross sections on the squark and gluino masses as well as the trilinear coupling controlling the mixing in particular in the sbottom sector.

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“…In the seminal works by Sterman [21] and by Catani and Trentadue [22] the contributions from large logarithms from soft gluons were shown to exponentiate in a systematic fashion. Remarkable success [23][24][25][26][27][28] in the resummation of soft gluons lead to questions related to summing up of subleading threshold logarithms, for example logarithms resulting from next to soft-virtual (NSV) contributions. In QCD and in soft collinear effective theory there have been significant developments to resum NSV terms to all orders [29][30][31][32][33][34][35][36][37][38][39][40][41].…”

mentioning

confidence: 99%

Going beyond Soft plus Virtual

Ajjath,

Mukherjee,

Ravindran

2022

Preprint

Self Cite

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We present a formalism that sums up the soft-virtual (SV) and next-to-SV (NSV) diagonal contributions to inclusive colorless productions in hadron colliders to all orders in perturbative QCD. Using factorisation theorem, renormalisation group invariance and employing the transcendental structure of perturbative results, we show the exponential behavior of soft-collinear function. This allows us to predict certain SV and NSV terms to all orders from lower order information. We also present an integral representation for the coefficient functions which is suitable for Mellin N -space resummation.

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Resummed Drell-Yan cross-section at N$^3$LL

Cited by 3 publications

References 0 publications

Light Singlino Dark Matter at the LHC

Light Singlino Dark Matter at the LHC

Higgsino and gaugino pair production at the LHC with aNNLO+NNLL precision

Going beyond Soft plus Virtual

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