Electroweak gauge boson production at hadron colliders through<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="script">O</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:msubsup><mml:mi>α</mml:mi><mml:mi>s</mml:mi><mml:mn>2</mml:mn></mml:msubsup><mml:mo stretchy="false">)</mml:mo></mml:math>

Melnikov, Kirill; Petriello, Frank

doi:10.1103/physrevd.74.114017

Cited by 655 publications

(630 citation statements)

References 51 publications

Supporting

Mentioning

622

Contrasting

Order By: Relevance

“…The MLM matching scheme is used to remove overlaps between the n and n þ 1 parton samples [38]. The CTEQ6L1 PDF [39,40] set is used and the cross-section is normalized to the NNLO prediction [41]. Parton showering and hadronization are modeled by Herwig and the underlying event is simulated by Jimmy.…”

Section: Atlas Detector and Data Samplesmentioning

confidence: 99%

Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis ats=7 TeVusing the ATLAS detector

Aad¹,

Abbott²,

Abdallah³

et al. 2016

Phys. Rev. D

View full text Add to dashboard Cite

A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t andt quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 4.6 fb −1 at a center-of-mass energy of ffiffi ffi s p ¼ 7 TeV collected during 2011. Candidate events are selected in the dilepton topology with large missing transverse momentum and at least two jets. The angles θ 1 and θ 2 between the charged leptons and the direction of motion of the parent quarks in the tt rest frame are sensitive to the spin information, and the distribution of cos θ 1 · cos θ 2 is sensitive to the spin correlation between the t andt quarks. The distribution is unfolded to parton level and compared to the next-to-leading order prediction. A good agreement is observed.

show abstract

Section: Atlas Detector and Data Samplesmentioning

confidence: 99%

Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis ats=7 TeVusing the ATLAS detector

Aad¹,

Abbott²,

Abdallah³

et al. 2016

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…To minimise model-dependent theoretical uncertainties, the cross-section is not extrapolated to the full phase space but is reported in a phase space only slightly extended with respect to the fiducial acceptance of the e + and e − . The results are compared to NNLO pQCD calculations with next-to-leading-order (NLO) electroweak corrections from the FEWZ 3.1 [10,11] framework and to the predictions from three event generators. …”

mentioning

confidence: 99%

Measurement of the high-mass Drell–Yan differential cross-section in pp collisions at s=7 TeV with the ATLAS detector

Aad¹,

Abajyan²,

Abbott³

et al. 2013

Physics Letters B

View full text Add to dashboard Cite

This Letter reports a measurement of the high-mass Drell-Yan differential cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC. Based on an integrated luminosity of 4.9 fb −1 , the differential cross-section in the Z /γ * → e + e − channel is measured with the ATLAS detector as a function of the invariant mass, m ee , in the range 116 < m ee < 1500 GeV, for a fiducial region in which both the electron and the positron have transverse momentum p T > 25 GeV and pseudorapidity |η| < 2.5.A comparison is made to various event generators and to the predictions of perturbative QCD calculations at next-to-next-to-leading order.© 2013 CERN. Published by Elsevier B.V. All rights reserved. IntroductionAt hadron colliders, the Drell-Yan (DY) process [1], proceeding at tree level via the s-channel exchange of a virtual photon or Z boson, can produce charged lepton pairs over a wide range of invariant mass. The differential cross-section as a function of the invariant mass is described by perturbative QCD (pQCD) calculations at next-to-next-to-leading order (NNLO). Given the simple experimental signature and the low backgrounds, a small experimental uncertainty can be achieved on the measured invariant mass distribution allowing for a precision test of pQCD. The mass spectrum is also sensitive to the parton distribution functions (PDFs), in particular to the poorly known distribution of antiquarks at large x [2], where x can be interpreted, at leading order, as the fraction of the proton momentum carried by the interacting parton. Additionally, the production of DY dilepton pairs is a source of background for other Standard Model (SM) measurements, and the mass spectrum may be modified by new physics phenomena giving rise to, e.g., narrow resonances or an excess of high-mass pairs inconsistent with the known PDFs.The differential cross-section for DY dilepton pair production in the high-mass range has been reported previously by the CMS [3], CDF [4] and D0 [5] Collaborations. With the ATLAS detector, total and differential cross-sections in a mass window of 66-116 GeV have been measured using the 2010 dataset [6]. In addition, searches for new physics in the high-mass range have been performed [7][8][9] and no deviations from the SM expectation were observed. This Letter reports an extension of these previous ✩ © CERN for the benefit of the ATLAS Collaboration.E-mail address: atlas.publications@cern.ch.analyses by providing a measurement of the DY cross-section, fully corrected for detector effects, in the dielectron channel as a function of the e + e − invariant mass, m ee , up to 1500 GeV. To minimise model-dependent theoretical uncertainties, the cross-section is not extrapolated to the full phase space but is reported in a phase space only slightly extended with respect to the fiducial acceptance of the e + and e − . The results are compared to NNLO pQCD calculations with next-to-leading-order (NLO) electroweak corrections from the FEWZ 3.1 [10,11] framework and to the predictions from ...

show abstract

“…However, CDR is also used in existing fully differential next-to-next-to-leading order (NNLO) computations [13][14][15][16][17][18][19]. Its use in such situations is much less natural.…”

mentioning

confidence: 99%

Four-dimensional helicity scheme and dimensional reconstruction

2011

Self Cite

View full text Add to dashboard Cite

The four-dimensional helicity regularization scheme is often used in one-loop QCD computations. It was recently argued in Ref.[1] that this scheme is inconsistent beyond the one-loop order in perturbation theory. In this paper, we clarify the reason for this inconsistency by studying the perturbative expansion of the vector current correlator in one-flavor QED through three-loop order. We develop a simple, practical way to fix the four-dimensional helicity scheme using the idea of dimensional reconstruction, and demonstrate its application in several illustrative examples.

show abstract

Electroweak gauge boson production at hadron colliders throughO(αs2)

Cited by 655 publications

References 51 publications

Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis ats=7 TeVusing the ATLAS detector

Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis ats=7 TeVusing the ATLAS detector

Measurement of the high-mass Drell–Yan differential cross-section in pp collisions at s=7 TeV with the ATLAS detector

Four-dimensional helicity scheme and dimensional reconstruction

Contact Info

Product

Resources

About