Role of low-energy observables in precision Higgs boson analyses

Journal Article · Thu Apr 02 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.91.073001· OSTI ID:1221225

Petrov, Alexey A. ^[1]; Pokorski, Stefan ^[2]; Wells, James D. ^[3]; Zhang, Zhengkang ^[3]

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1. Wayne State Univ., Detroit, MI (United States); Univ. of Michigan, Ann Arbor, MI (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
2. Univ. of Warsaw, Warsaw (Poland)
3. Univ. of Michigan, Ann Arbor, MI (United States)

A conventional approach to precision calculations of Higgs boson observables uses quark masses m_c and m_b as inputs. However, quark masses are single numbers that hide a variety of low-energy data from which they are extracted, and also hide the various sources of theoretical uncertainties and correlations with additional input parameters such as α_s. Higher-precision calculations, which are needed to give meaning to future measurements, require more direct engagement with the low-energy data in a global analysis. As a result, we present an initial calculation in this direction, which illustrates the procedure and reveals some of the theory uncertainties that challenge subpercent determinations of Higgs boson partial widths.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1221225
• Report Number(s): MCTP-15-01; PRVDAQ; arXiv eprint number arXiv:1501.02803
• Journal Information: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 91, Issue 7; ISSN 1550-7998
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English