Resummation prediction on gauge boson pair production with a jet veto

Wang, Yan; Li, Chong Sheng; Liu, Ze Long

doi:10.1103/physrevd.93.094020

Cited by 13 publications

(11 citation statements)

References 48 publications

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“…(1.1) can be systematically summed up to all orders in α s . This resummation for jet vetoes in hadronic collisions has been well-developed in the context of Drell-Yan and Higgs production [14,[16][17][18][19][20][21][22][23][24][25][26][27][28][29], and the same methods have also been used to study diboson processes [30][31][32][33][34][35].…”

Section: Jhep07(2016)119mentioning

confidence: 99%

Impact of jet veto resummation on slepton searches

Tackmann

Waalewijn

Zeune

2016

J. High Energ. Phys.

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Several searches for new physics at the LHC require a fixed number of signal jets, vetoing events with additional jets from QCD radiation. As the probed scale of new physics gets much larger than the jet-veto scale, such jet vetoes strongly impact the QCD perturbative series, causing nontrivial theoretical uncertainties. We consider slepton pair production with 0 signal jets, for which we perform the resummation of jet-veto logarithms and study its impact. Currently, the experimental exclusion limits take the jet-veto cut into account by extrapolating to the inclusive cross section using parton shower Monte Carlos. Our results indicate that the associated theoretical uncertainties can be large, and when taken into account have a sizeable impact already on present exclusion limits. This is improved by performing the resummation to higher order, which allows us to obtain accurate predictions even for high slepton masses. For the interpretation of the experimental results to benefit from improved theory predictions, it would be useful for the experimental analyses to also provide limits on the unfolded visible 0-jet cross section.

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Section: Jhep07(2016)119mentioning

confidence: 99%

Impact of jet veto resummation on slepton searches

Tackmann

Waalewijn

Zeune

2016

J. High Energ. Phys.

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“…This has clearly sparked a lot of interests as a possible manifestation of new physics. However, careful analyses have shown that the excess can be largely explained within the Standard Model, if all-order resummation is taken into account when computing the measured fiducial cross-section [195][196][197][198].…”

Section: Extension To Lepton-hadron and Hadron-hadron Collisionsmentioning

confidence: 99%

QCD resummation for hadronic final states

Luisoni

Marzani

2015

J. Phys. G: Nucl. Part. Phys.

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Abstract. We review the basic concepts of all-order calculations in Quantum Chromodynamics (QCD) and their application to collider phenomenology. We start by discussing the factorization properties of QCD amplitudes and cross-sections in the soft and collinear limits and their resulting all-order exponentiation. We then discuss several applications of this formalism to observables which are of great interest at particle colliders. In this context, we describe the all-order resummation of event-shape distributions, as well as observables that probe the internal structure of hadronic jets.

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“…[13,14]). The resummation for a jet-algorithm dependent veto using p T j is known up to NNLL [1,[15][16][17][18][19] and has been applied to a number of color-singlet processes [2,[20][21][22][23][24][25][26][27].The purpose of the present paper is to provide the full two-loop corrections to the T Bj -dependent and T Cj -dependent beam and soft functions that are required to bring the resummation for T Bj and T Cj to the NNLL level. These corrections also provide the necessary fixed-order boundary conditions for the N 3 LL resummation, with the remaining missing ingredients being the three-loop clustering correction to the noncusp and the fourloop correction to the cusp anomalous dimensions.We compute, partly analytically and partly numerically, the beam and dijet soft functions for both rapidity-dependent jet veto observables in eq.…”

mentioning

confidence: 99%

Two-loop beam and soft functions for rapidity-dependent jet vetoes

Gangal

Gaunt

Stahlhofen

et al. 2017

J. High Energ. Phys.

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Jet vetoes play an important role in many analyses at the LHC. Traditionally, jet vetoes have been imposed using a restriction on the transverse momentum p T j of jets. Alternatively, one can also consider jet observables for which p T j is weighted by a smooth function of the jet rapidity y j that vanishes as |y j | → ∞. Such observables are useful as they provide a natural way to impose a tight veto on central jets but a looser one at forward rapidities. We consider two such rapidity-dependent jet veto observables, T Bj and T Cj , and compute the required beam and dijet soft functions for the jet-vetoed colorsinglet production cross section at two loops. At this order, clustering effects from the jet algorithm become important. The dominant contributions are computed fully analytically while corrections that are subleading in the limit of small jet radii are expressed in terms of finite numerical integrals. Our results enable the full NNLL resummation and are an important step towards N 3 LL resummation for cross sections with a T Bj or T Cj jet veto.

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Resummation prediction on gauge boson pair production with a jet veto

Cited by 13 publications

References 48 publications

Impact of jet veto resummation on slepton searches

Impact of jet veto resummation on slepton searches

QCD resummation for hadronic final states

Two-loop beam and soft functions for rapidity-dependent jet vetoes

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