Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Determination of the bottom quark mass from the Upsilon(1S) system
Autore:
Pineda, A;
Indirizzi:
Univ Karlsruhe, Inst Theoret Teilchenphys, D-76128 Karlsruhe, Germany UnivKarlsruhe Karlsruhe Germany D-76128 hys, D-76128 Karlsruhe, Germany
Titolo Testata:
JOURNAL OF HIGH ENERGY PHYSICS
fascicolo: 6, volume: 2001, anno: 2001,
pagine: NIL_589 - NIL_625
SICI:
1029-8479(200106)2001:6<NIL_589:DOTBQM>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
EFFECTIVE-FIELD-THEORY; TO-LEADING ORDER; HEAVY-QUARKONIUM; POLE MASS; PRECISION DETERMINATION; NONRELATIVISTIC QCD; PERTURBATIVE QCD; NEAR-THRESHOLD; BOUND-STATES; WILSON LOOP;
Keywords:
renormalization regularization and renormalons; QCD; NLO computations;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
82
Recensione:
Indirizzi per estratti:
Indirizzo: Pineda, A Univ Karlsruhe, Inst Theoret Teilchenphys, Kaiserstr 12, D-76128Karlsruhe, Germany Univ Karlsruhe Kaiserstr 12 Karlsruhe Germany D-76128 , Germany
Citazione:
A. Pineda, "Determination of the bottom quark mass from the Upsilon(1S) system", J HIGH EN P, 2001(6), 2001, pp. NIL_589-NIL_625

Abstract

We approximately compute the normalization constant of the first infrared renormalon of the pole mass (and the singlet static potential). Estimates of higher order terms in the perturbative relation between the pole mass andthe MS mass (and in the relation between the singlet static potential and alpha (s)) are given. We define a matching scheme (the renormalon subtracted scheme) between QCD and any effective field theory with heavy quarks where, besides the usual perturbative matching, the first renormalon in the Borel plane of the pole mass is subtracted. A determination of the bottom MS quark mass from the Y (1S) system is performed with this new scheme and the errors studied. Our result reads m(b,(MS) over bar)(m(b,(MS) over bar)) = 4210(-90)(+90)(theory)(+25)(-25) (alpha (s)) MeV. Using the mass differencebetween the B and D meson, we also obtain a value for the charm quark mass: m(c,(MS) over bar)(m(c,(MS) over bar)) = 1 210(-70)(+70)(theory)(-65)(+65)(m(b,(MS) over bar))(+45)(-45)(lambda (1)) MeV. We finally discuss upon eventual improvements of these determinations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 21:41:01