Determination of the strong coupling constant from the inclusive jet cross section in ppbar collisions at sqrt(s)=1.96 TeV

Journal Article · Sun Nov 01 00:00:00 EDT 2009 · Phys.Rev.D80:111107,2009

DOI:https://doi.org/10.1103/PhysRevD.80.111107· OSTI ID:971012

Abazov, V M; Abbott, B; Abolins, M; Acharya, B S; Adams, M; Adams, T; Aguilo, E; Ahsan, M; Alexeev, G D; Alkhazov, G; Alton, A

We determine the strong coupling constant {alpha}{sub s} and its energy dependence from the p{sub T} dependence of the inclusive jet cross section in p{bar p} collisions at {radical}s = 1.96 TeV. The strong coupling constant is determined over the transverse momentum range 50 < p{sub T} < 145 GeV. Using perturbative QCD calculations to order {Omicron}({alpha}{sub s}{sup 3}) combined with {Omicron}({alpha}{sub s}{sup 4}) contributions from threshold corrections, we obtain {alpha}{sub s}(M{sub Z}) = 0.1173{sub -0.0049}{sup +0.0041}. This is the most precise result obtained at a hadron-hadron collider.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 971012
• Report Number(s): FERMILAB-PUB-09-558-E; arXiv eprint number arXiv:0911.2710; TRN: US1000989
• Journal Information: Phys.Rev.D80:111107,2009, Vol. 80; ISSN 1550-7998
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COUPLING CONSTANTS
CROSS SECTIONS
ENERGY DEPENDENCE
QUANTUM CHROMODYNAMICS
TRANSVERSE MOMENTUM
Experiment-HEP