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Title: QCD corrections to Higgs pair production in bottom quark fusion

Abstract

We present a complete next-to-leading-order (NLO) calculation for the total cross section of inclusive Higgs pair production via bottom-quark fusion (bb{yields}hh) at the CERN Large Hadron Collider (LHC) in the standard model. The NLO QCD corrections lead to less dependence on the renormalization scale ({mu}{sub R}) and the factorization scale ({mu}{sub F}) than the leading-order (LO) cross section, and they significantly increase the LO cross section. The rate for inclusive Higgs pair production is small in the standard model, but can be large in models with enhanced couplings of the b quark to the Higgs bosons.

Authors:
 [1];  [2];  [3]; ;  [4]
  1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
  3. (United States)
  4. Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019 (United States)
Publication Date:
OSTI Identifier:
20933210
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.75.013007; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B QUARKS; CERN; CERN LHC; CORRECTIONS; FACTORIZATION; HIGGS BOSONS; HIGGS MODEL; INTERMEDIATE BOSONS; PAIR PRODUCTION; QUANTUM CHROMODYNAMICS; QUARK-QUARK INTERACTIONS; RENORMALIZATION; STANDARD MODEL; TOTAL CROSS SECTIONS

Citation Formats

Dawson, Sally, Kao, Chung, Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019, Wang Yili, and Williams, Peter. QCD corrections to Higgs pair production in bottom quark fusion. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.013007.
Dawson, Sally, Kao, Chung, Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019, Wang Yili, & Williams, Peter. QCD corrections to Higgs pair production in bottom quark fusion. United States. doi:10.1103/PHYSREVD.75.013007.
Dawson, Sally, Kao, Chung, Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019, Wang Yili, and Williams, Peter. Mon . "QCD corrections to Higgs pair production in bottom quark fusion". United States. doi:10.1103/PHYSREVD.75.013007.
@article{osti_20933210,
title = {QCD corrections to Higgs pair production in bottom quark fusion},
author = {Dawson, Sally and Kao, Chung and Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019 and Wang Yili and Williams, Peter},
abstractNote = {We present a complete next-to-leading-order (NLO) calculation for the total cross section of inclusive Higgs pair production via bottom-quark fusion (bb{yields}hh) at the CERN Large Hadron Collider (LHC) in the standard model. The NLO QCD corrections lead to less dependence on the renormalization scale ({mu}{sub R}) and the factorization scale ({mu}{sub F}) than the leading-order (LO) cross section, and they significantly increase the LO cross section. The rate for inclusive Higgs pair production is small in the standard model, but can be large in models with enhanced couplings of the b quark to the Higgs bosons.},
doi = {10.1103/PHYSREVD.75.013007},
journal = {Physical Review. D, Particles Fields},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
  • We present a complete next-to-leading order (NLO) calculation for the total cross section of inclusive Higgs pair production via bottom-quark fusion (b{bar b} {yields} hh) at the CERN Large Hadron Collider (LHC) in the Standard Model. The NLO QCD corrections lead to less dependence on the renormalization scale ({mu}{sub R}) and the factorization scale ({mu}{sub F}) than the leading-order (LO) cross section, and they significantly increase the LO cross section. The rate for inclusive Higgs pair production is small in the Standard Model, but can be large in models with enhanced couplings of the b quark to the Higgs bosons.
  • We present a complete next-to-leading order calculation for the total cross section for inclusive Higgs pair production via bottom-quark fusion at the CERN Large Hadron Collider in the minimal supersymmetric standard model and the minimal supergravity model. We emphasize the contributions of s quark and gluino loops and the decoupling properties of our results for heavy s quark and gluino masses. The enhanced couplings of the b quark to the Higgs bosons in supersymmetric models with large tan{beta} yield large next-to-leading order supersymmetry QCD corrections in some regions of parameter space.
  • The associated production of a Higgs boson with a b quark is a discovery mode for a minimal supersymmetric standard model (MSSM) Higgs boson at large tan{beta}. We compute the SUSY QCD corrections from gluino and squark loops to this process and combine them with the O({alpha}{sub s}{sup 2}) next-to-leading order (NLO) QCD corrections to obtain reliable predictions for the rate. Finally, we compare our results with an effective Lagrangian approximation which includes only the low energy corrections from squark and gluino loops to the bb Higgs vertices.
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