Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/12463
Renormalization group improvement of the nonrelativistic RQCD Lagrangian and heavy quarkonium spectrum
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
We complete the leading-log renormalization group scaling of the nonrelativistic (NRQCD) Lagrangian at
O
(
1
/
m
2
)
.
The next-to-next-to-leading-log renormalization group scaling of the potential NRQCD Lagrangian (as far as the singlet is concerned) is also obtained in the situation
m
α
s
≫
Λ
QCD
.
As a by-product, we obtain the heavy quarkonium spectrum with the same accuracy in the situation
m
α
2
s
≳
Λ
QCD
.
When
Λ
QCD
≪
m
α
2
s
,
this is equivalent to obtain the whole set of
O
(
m
α
(
n
+
4
)
s
ln
n
α
s
)
terms in the heavy quarkonium spectrum. The implications of our results in the nonperturbative situation
m
α
s
∼
Λ
QCD
are also mentioned.
Citació
Citació
PINEDA, Antonio (Pineda Ruiz). Renormalization group improvement of the nonrelativistic RQCD Lagrangian and heavy quarkonium spectrum. Physical Review D. 2002. Vol. 65, num. 7, pags. 074007-1-074007-10. ISSN 0556-2821. [consulted: 27 of May of 2026]. Available at: https://hdl.handle.net/2445/12463