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Title: Precision probes of QCD at high energies

Abstract

New physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at the LHC.We use energetic QCD processes to perform novel measurements of the Standard Model (SM) Effective Field Theory. We show that the dijet invariant mass spectrum, and the inclusive jet transverse momentum spectrum, are sensitive to a dimension 6 operator that modifies the gluon propagator at high energies. The dominant effect is constructive or destructive interference with SM jet production. Here, we compare differential next-to-leading order predictions from POWHEG to public 7TeV jet data, including scale, PDF, and experimental uncertainties and their respective correlations. Furthermore, we constrain a New Physics (NP) scale of 3.5TeV with current data. We project the reach of future 13 and 100TeV measurements, which we estimate to be sensitive to NP scales of 8 and 60TeV, respectively. As an application, we apply our bounds to constrain heavy vector octet colorons that couple to the QCD current. We conclude that effective operators will surpass bump hunts, in terms of coloron mass reach, even for sequential couplings.

Authors:
 [1];  [2];  [3];  [3]
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theory Division
  2. Rutgers Univ., Piscataway, NJ (United States). New High Energy Theory Center
  3. New York Univ. (NYU), NY (United States). Center for Cosmology and Particle Physics
Publication Date:
Research Org.:
Rutgers Univ., Piscataway, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1392994
Grant/Contract Number:  
SC0010008
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 7; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Jets

Citation Formats

Alioli, Simone, Farina, Marco, Pappadopulo, Duccio, and Ruderman, Joshua T. Precision probes of QCD at high energies. United States: N. p., 2017. Web. doi:10.1007/JHEP07(2017)097.
Alioli, Simone, Farina, Marco, Pappadopulo, Duccio, & Ruderman, Joshua T. Precision probes of QCD at high energies. United States. doi:10.1007/JHEP07(2017)097.
Alioli, Simone, Farina, Marco, Pappadopulo, Duccio, and Ruderman, Joshua T. Thu . "Precision probes of QCD at high energies". United States. doi:10.1007/JHEP07(2017)097. https://www.osti.gov/servlets/purl/1392994.
@article{osti_1392994,
title = {Precision probes of QCD at high energies},
author = {Alioli, Simone and Farina, Marco and Pappadopulo, Duccio and Ruderman, Joshua T.},
abstractNote = {New physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at the LHC.We use energetic QCD processes to perform novel measurements of the Standard Model (SM) Effective Field Theory. We show that the dijet invariant mass spectrum, and the inclusive jet transverse momentum spectrum, are sensitive to a dimension 6 operator that modifies the gluon propagator at high energies. The dominant effect is constructive or destructive interference with SM jet production. Here, we compare differential next-to-leading order predictions from POWHEG to public 7TeV jet data, including scale, PDF, and experimental uncertainties and their respective correlations. Furthermore, we constrain a New Physics (NP) scale of 3.5TeV with current data. We project the reach of future 13 and 100TeV measurements, which we estimate to be sensitive to NP scales of 8 and 60TeV, respectively. As an application, we apply our bounds to constrain heavy vector octet colorons that couple to the QCD current. We conclude that effective operators will surpass bump hunts, in terms of coloron mass reach, even for sequential couplings.},
doi = {10.1007/JHEP07(2017)097},
journal = {Journal of High Energy Physics (Online)},
number = 7,
volume = 2017,
place = {United States},
year = {Thu Jul 20 00:00:00 EDT 2017},
month = {Thu Jul 20 00:00:00 EDT 2017}
}

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Cited by: 5 works
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