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

Journal Article · · Physical Review D
 [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)
+ Show Author Affiliations
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.
Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1354870
Alternate ID(s):
OSTI ID: 1373425
Report Number(s):
FERMILAB-PUB--17-085-T; IPPP--17-25; PPP--17-25; arXiv:1703.10109; 1519996
Journal Information:
Physical Review D, Journal Name: Physical Review D Journal Issue: 1 Vol. 96; ISSN PRVDAQ; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Predictions for diphoton production at the LHC through NNLO in QCD text January 2016
Subleading Power Corrections for N-Jettiness Subtractions text January 2016
Power Corrections in the N-jettiness Subtraction Scheme text January 2016
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The NNLO QCD corrections to Z boson production at large transverse momentum text January 2016
NLO QCD+EW predictions for V + jets including off-shell vector-boson decays and multijet merging text January 2016
Two-loop QCD helicity amplitudes for $ q\overline q $ → W ±γ and $ q\overline q $ → Z 0γ text January 2012
Two-loop QCD helicity amplitudes for gg → Z g and gg →Zγ text January 2013

Cited By (11)

N -jettiness subtractions for g g → H at subleading power journal January 2018
Next-to-Next-to-Leading-Order QCD Corrections to the Transverse Momentum Distribution of Weak Gauge Bosons journal March 2018
Precise predictions for $$V+$$ V + jets dark matter backgrounds journal December 2017
The NNLO QCD soft function for 1-jettiness journal March 2018
Vector boson production in association with a jet at forward rapidities journal June 2019
Precise predictions for V plus jets dark matter backgrounds text January 2017
Next-to-Next-to-Leading-Order QCD Corrections to the Transverse Momentum Distribution of Weak Gauge Bosons text January 2018
Vector boson production in association with a jet at forward rapidities text January 2019
The NNLO QCD soft function for 1-jettiness text January 2017
Next-to-Next-to-Leading-Order QCD Corrections to the Transverse Momentum Distribution of Weak Gauge Bosons text January 2018
Vector boson production in association with a jet at forward rapidities text January 2019

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