skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Driving missing data at the LHC: NNLO predictions for the ratio of γ + j and Z + j

Abstract

In this paper we present a calculation of the $$\gamma+j$$ process at next-to-next-to-leading order (NNLO) in QCD and compare the resulting predictions to 8 TeV CMS data. We find good agreement with the shape of the photon $$p_T$$ spectrum, particularly after the inclusion of additional electroweak corrections, but there is a tension between the overall normalization of the theoretical prediction and the measurement. We use our results to compute the ratio of $$Z(\to \ell^+\ell^-)+j$$ to $$\gamma+j$$ events as a function of the vector boson transverse momentum at NNLO, a quantity that is used to normalize $$Z(\rightarrow\nu\overline{\nu}) +j$$ backgrounds in searches for dark matter and supersymmetry. Our NNLO calculation significantly reduces the theoretical uncertainty on this ratio, thus boosting its power for future searches of new physics.

Authors:
 [1];  [2];  [3]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Univ. of Durham, Durham (United Kingdom)
  3. Univ. at Buffalo The State Univ. of New York, Buffalo, NY (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1354870
Alternate Identifier(s):
OSTI ID: 1373425
Report Number(s):
PPP-17-25; IPPP-17-25; FERMILAB-PUB-17-085-T; arXiv:1703.10109
Journal ID: ISSN 2470-0010; PRVDAQ; 1519996
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Campbell, John M., Ellis, R. Keith, and Williams, Ciaran. Driving missing data at the LHC: NNLO predictions for the ratio of γ+j and Z+j. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.014037.
Campbell, John M., Ellis, R. Keith, & Williams, Ciaran. Driving missing data at the LHC: NNLO predictions for the ratio of γ+j and Z+j. United States. doi:10.1103/PhysRevD.96.014037.
Campbell, John M., Ellis, R. Keith, and Williams, Ciaran. Mon . "Driving missing data at the LHC: NNLO predictions for the ratio of γ+j and Z+j". United States. doi:10.1103/PhysRevD.96.014037. https://www.osti.gov/servlets/purl/1354870.
@article{osti_1354870,
title = {Driving missing data at the LHC: NNLO predictions for the ratio of γ+j and Z+j},
author = {Campbell, John M. and Ellis, R. Keith and Williams, Ciaran},
abstractNote = {In this paper we present a calculation of the $\gamma+j$ process at next-to-next-to-leading order (NNLO) in QCD and compare the resulting predictions to 8 TeV CMS data. We find good agreement with the shape of the photon $p_T$ spectrum, particularly after the inclusion of additional electroweak corrections, but there is a tension between the overall normalization of the theoretical prediction and the measurement. We use our results to compute the ratio of $Z(\to \ell^+\ell^-)+j$ to $\gamma+j$ events as a function of the vector boson transverse momentum at NNLO, a quantity that is used to normalize $Z(\rightarrow\nu\overline{\nu}) +j$ backgrounds in searches for dark matter and supersymmetry. Our NNLO calculation significantly reduces the theoretical uncertainty on this ratio, thus boosting its power for future searches of new physics.},
doi = {10.1103/PhysRevD.96.014037},
journal = {Physical Review D},
number = 1,
volume = 96,
place = {United States},
year = {2017},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Direct Photon Production at Next-to–Next-to-Leading Order
journal, May 2017


Two-loop QCD helicity amplitudes for gg → Z g and gg →Zγ
journal, April 2013

  • Gehrmann, Thomas; Tancredi, Lorenzo; Weihs, Erich
  • Journal of High Energy Physics, Vol. 2013, Issue 4
  • DOI: 10.1007/JHEP04(2013)101

Using γ + jets production to calibrate the Standard Model $ Z\left( { \to v\bar{v}} \right) $ + jets background to new physics processes at the LHC
journal, October 2011

  • Ask, S.; Parker, M. A.; Sandova, T.
  • Journal of High Energy Physics, Vol. 2011, Issue 10
  • DOI: 10.1007/JHEP10(2011)058

New parton distribution functions from a global analysis of quantum chromodynamics
journal, February 2016


The anti- k t jet clustering algorithm
journal, April 2008


W -Boson Production in Association with a Jet at Next-to-Next-to-Leading Order in Perturbative QCD
journal, August 2015


LHAPDF6: parton density access in the LHC precision era
journal, March 2015


The gluon jet function at two-loop order
journal, January 2011


N -jettiness soft function at next-to-next-to-leading order
journal, May 2015


One-loop weak corrections to hadronic production of Z bosons at large transverse momenta
journal, October 2005


Z -Boson Production in Association with a Jet at Next-To-Next-To-Leading Order in Perturbative QCD
journal, April 2016


The quark beam function at two loops
journal, April 2014

  • Gaunt, Jonathan R.; Stahlhofen, Maximilian; Tackmann, Frank J.
  • Journal of High Energy Physics, Vol. 2014, Issue 4
  • DOI: 10.1007/JHEP04(2014)113

An effective field theory for collinear and soft gluons: Heavy to light decays
journal, May 2001


Logarithmic electroweak corrections to hadronic <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>Z</mml:mi><mml:mo>+</mml:mo><mml:mn>1</mml:mn></mml:math> jet production at large transverse momentum
journal, March 2005


Cross section of isolated prompt photons in hadron-hadron collisions
journal, May 2002

  • Catani, Stefano; Fontannaz, Michel; Guillet, Jean-Philippe
  • Journal of High Energy Physics, Vol. 2002, Issue 05
  • DOI: 10.1088/1126-6708/2002/05/028

Measurement of the triple-differential cross section for photon + jets production in proton-proton collisions at $ \sqrt{s} $ = 7 TeV
journal, June 2014

  • Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.
  • Journal of High Energy Physics, Vol. 2014, Issue 6
  • DOI: 10.1007/JHEP06(2014)009

Electroweak corrections to hadronic photon production at large transverse momenta
journal, March 2006


A complete (ααs)calculation of the photon + 1 jet rate in e+ e− annihilation
journal, April 1998


A general algorithm for calculating jet cross sections in NLO QCD
journal, February 1997


Dark matter evidence, particle physics candidates and detection methods
journal, August 2012


Addendum to “Electroweak Sudakov effects in W , Z and γ production at large transverse momentum”
journal, October 2015


N Jettiness: An Inclusive Event Shape to Veto Jets
journal, August 2010


Isolating prompt photons with narrow cones
journal, September 2013

  • Catani, S.; Fontannaz, M.; Guillet, J. Ph.
  • Journal of High Energy Physics, Vol. 2013, Issue 9
  • DOI: 10.1007/JHEP09(2013)007

The NNLO QCD corrections to Z boson production at large transverse momentum
journal, July 2016

  • Ridder, A. Gehrmann-De; Gehrmann, T.; Glover, E. W. N.
  • Journal of High Energy Physics, Vol. 2016, Issue 7
  • DOI: 10.1007/JHEP07(2016)133

Higher-order corrections to jet cross sections in hadron colliders
journal, August 1993


Invariant operators in collinear effective theory
journal, September 2001


Toward a NNLO calculation of the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mover accent="true"><mml:mi>B</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mo>→</mml:mo><mml:msub><mml:mi>X</mml:mi><mml:mi>s</mml:mi></mml:msub><mml:mi>γ</mml:mi></mml:math> decay rate with a cut on photon energy: II. Two-loop result for the jet function
journal, June 2006


The gluon beam function at two loops
journal, August 2014

  • Gaunt, Jonathan R.; Stahlhofen, Maximilian; Tackmann, Frank J.
  • Journal of High Energy Physics, Vol. 2014, Issue 8
  • DOI: 10.1007/JHEP08(2014)020

Summing Sudakov logarithms in B X s γ in effective field theory
journal, December 2000


Phenomenology of the Z boson plus jet process at NNLO
journal, October 2016


Electroweak corrections to dilepton + jet production at hadron colliders
journal, June 2011

  • Denner, Ansgar; Dittmaier, Stefan; Kasprzik, Tobias
  • Journal of High Energy Physics, Vol. 2011, Issue 6
  • DOI: 10.1007/JHEP06(2011)069

Comparison of the Z/γ ∗ + jets to γ + jets cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
journal, October 2015

  • Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.
  • Journal of High Energy Physics, Vol. 2015, Issue 10
  • DOI: 10.1007/JHEP10(2015)128

Quantitative constraints on the gluon distribution function in the proton from collider isolated-photon data
journal, July 2012


Precise QCD Predictions for the Production of a Z Boson in Association with a Hadronic Jet
journal, July 2016


Jet photoproduction at HERA
journal, December 1997


Driving missing data at next-to-leading order
journal, December 2011


NLO QCD+EW predictions for V + jets including off-shell vector-boson decays and multijet merging
journal, April 2016

  • Kallweit, S.; Lindert, J. M.; Maierhöfer, P.
  • Journal of High Energy Physics, Vol. 2016, Issue 4
  • DOI: 10.1007/JHEP04(2016)021

Two-loop QCD helicity amplitudes for $ q\overline q $ → W ±γ and $ q\overline q $ → Z 0γ
journal, February 2012

  • Gehrmann, Thomas; Tancredi, Lorenzo
  • Journal of High Energy Physics, Vol. 2012, Issue 2
  • DOI: 10.1007/JHEP02(2012)004

Sensitivity of the LHC isolated-γ + jet data to the parton distribution functions of the proton
journal, March 2013


Searching for dark matter at hadron colliders
journal, September 2014

  • Askew, Andrew; Chauhan, Sushil; Penning, Björn
  • International Journal of Modern Physics A, Vol. 29, Issue 23
  • DOI: 10.1142/S0217751X14300415

Hard scattering factorization from effective field theory
journal, July 2002


Precision diboson observables for the LHC
journal, March 2016

  • Frye, Christopher; Freytsis, Marat; Scholtz, Jakub
  • Journal of High Energy Physics, Vol. 2016, Issue 3
  • DOI: 10.1007/JHEP03(2016)171

Predictions for diphoton production at the LHC through NNLO in QCD
journal, July 2016

  • Campbell, John M.; Ellis, R. Keith; Li, Ye
  • Journal of High Energy Physics, Vol. 2016, Issue 7
  • DOI: 10.1007/JHEP07(2016)148

Electroweak Sudakov effects in W , Z and γ production at large transverse momentum
journal, July 2013


Top-Quark Decay at Next-to-Next-to-Leading Order in QCD
journal, January 2013


Subleading power corrections for N -jettiness subtractions
journal, April 2017


Measurement of the inclusive isolated prompt photon cross section in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector
journal, August 2016

  • Aad, G.; Abbott, B.; Abdallah, J.
  • Journal of High Energy Physics, Vol. 2016, Issue 8
  • DOI: 10.1007/JHEP08(2016)005

N-jettiness subtractions for NNLO QCD calculations
journal, September 2015

  • Gaunt, Jonathan R.; Stahlhofen, Maximilian; Tackmann, Frank J.
  • Journal of High Energy Physics, Vol. 2015, Issue 9
  • DOI: 10.1007/JHEP09(2015)058

Power corrections in the N -jettiness subtraction scheme
journal, March 2017

  • Boughezal, Radja; Liu, Xiaohui; Petriello, Frank
  • Journal of High Energy Physics, Vol. 2017, Issue 3
  • DOI: 10.1007/JHEP03(2017)160

Two-loop QED and QCD corrections to massless fermion–boson scattering
journal, May 2002


Soft-collinear factorization in effective field theory
journal, February 2002


Measurement of the Isolated Prompt Photon Production Cross Section in p p Collisions at s = 7 TeV
journal, February 2011


    Works referencing / citing this record:

    Vector boson production in association with a jet at forward rapidities
    journal, June 2019


    Vector boson production in association with a jet at forward rapidities
    journal, June 2019