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Title: Extrapolating W -associated jet-production ratios at the LHC

Abstract

Electroweak vector-boson production, accompanied by multiple jets, is an important background to searches for physics beyond the standard model. A precise and quantitative understanding of this process is helpful in constraining deviations from known physics. We study four key ratios in W + n -jet production at the LHC. We compute the ratio of cross sections for W + n - to W + (n-1)-jet production as a function of the minimum jet transverse momentum. We also study the ratio differentially, as a function of the W-boson transverse momentum; as a function of the scalar sum of the jet transverse energy, H$$jets\atop{T}$$; and as a function of certain jet transverse momenta. We show how to use such ratios to extrapolate differential cross sections to W + 6 -jet production at next-to-leading order, and we cross-check the method against a direct calculation at leading order. We predict the differential distribution in H$$jets\atop{T}$$ for W + 6 jets at next-to-leading order using such an extrapolation. We use the BlackHat software library together with SHERPA to perform the computations.

Authors:
 [1];  [2];  [3];  [2];  [4];  [5];  [6]
  1. Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
  3. Albert-Ludwigs-Univ. Freiburg, Freiburg (Germany); Univ. Simón Bolívar, Caracas (Venezuela)
  4. Albert-Ludwigs-Univ. Freiburg, Freiburg (Germany)
  5. Alternative Energies and Atomic Energy Commission (CEA), Saclay (France). Inst. de Physique Théorique
  6. Univ. of Durham, Durham (United Kingdom). Dept. of Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1502952
Alternate Identifier(s):
OSTI ID: 1198676
Report Number(s):
SLAC-PUB-16144
Journal ID: ISSN 1550-7998; PRVDAQ
Grant/Contract Number:  
AC02-76SF00515; SC0009937; AC02-05CH11231; ERC-AdG-8301; PHY-0705682; PITN-GA-2010-264564
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Bern, Z., Dixon, L. J., Febres Cordero, F., Höche, S., Ita, H., Kosower, D. A., and Maître, D. Extrapolating W -associated jet-production ratios at the LHC. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.92.014008.
Bern, Z., Dixon, L. J., Febres Cordero, F., Höche, S., Ita, H., Kosower, D. A., & Maître, D. Extrapolating W -associated jet-production ratios at the LHC. United States. doi:10.1103/PhysRevD.92.014008.
Bern, Z., Dixon, L. J., Febres Cordero, F., Höche, S., Ita, H., Kosower, D. A., and Maître, D. Tue . "Extrapolating W -associated jet-production ratios at the LHC". United States. doi:10.1103/PhysRevD.92.014008. https://www.osti.gov/servlets/purl/1502952.
@article{osti_1502952,
title = {Extrapolating W -associated jet-production ratios at the LHC},
author = {Bern, Z. and Dixon, L. J. and Febres Cordero, F. and Höche, S. and Ita, H. and Kosower, D. A. and Maître, D.},
abstractNote = {Electroweak vector-boson production, accompanied by multiple jets, is an important background to searches for physics beyond the standard model. A precise and quantitative understanding of this process is helpful in constraining deviations from known physics. We study four key ratios in W + n -jet production at the LHC. We compute the ratio of cross sections for W + n - to W + (n-1)-jet production as a function of the minimum jet transverse momentum. We also study the ratio differentially, as a function of the W-boson transverse momentum; as a function of the scalar sum of the jet transverse energy, H$jets\atop{T}$; and as a function of certain jet transverse momenta. We show how to use such ratios to extrapolate differential cross sections to W + 6 -jet production at next-to-leading order, and we cross-check the method against a direct calculation at leading order. We predict the differential distribution in H$jets\atop{T}$ for W + 6 jets at next-to-leading order using such an extrapolation. We use the BlackHat software library together with SHERPA to perform the computations.},
doi = {10.1103/PhysRevD.92.014008},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {1550-7998},
number = 1,
volume = 92,
place = {United States},
year = {2015},
month = {7}
}

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