Quarkonium spectroscopy and perturbative QCD: A new perspective

N. Brambilla; Y. Sumino; A. Vairo

doi:10.1016/S0370-2693(01)00611-6

Quarkonium spectroscopy and perturbative QCD: A new perspective

N. Brambilla, Y. Sumino, A. Vairo

Research output: Contribution to journal › Article › peer-review

97 Scopus citations

Abstract

We study the energy spectrum of bottomonium in perturbative QCD, taking α_s(M_Z) = 0.1181 ± 0.0020 as input and fixing m_b^MS (m_b^MS on the γ(1S) mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as long as the coupling constant remains smaller than one. We perform a detailed analysis and discuss the size of nonperturbative effects. A new qualitative picture on the structure of the bottomonium spectrum is provided. The lowest-lying cc̄ and bc̄ states are also examined.

Original language	English
Pages (from-to)	381-390
Number of pages	10
Journal	Physics Letters B
Volume	513
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(01)00611-6
State	Published - 2 Aug 2001
Externally published	Yes

Access to Document

10.1016/S0370-2693(01)00611-6

Cite this

@article{81a55fd1724a4a6d99254f33b18f89ab,

title = "Quarkonium spectroscopy and perturbative QCD: A new perspective",

abstract = "We study the energy spectrum of bottomonium in perturbative QCD, taking αs(MZ) = 0.1181 ± 0.0020 as input and fixing mbMS (mbMS on the γ(1S) mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as long as the coupling constant remains smaller than one. We perform a detailed analysis and discuss the size of nonperturbative effects. A new qualitative picture on the structure of the bottomonium spectrum is provided. The lowest-lying c{\=c} and b{\=c} states are also examined.",

author = "N. Brambilla and Y. Sumino and A. Vairo",

year = "2001",

month = aug,

day = "2",

doi = "10.1016/S0370-2693(01)00611-6",

language = "English",

volume = "513",

pages = "381--390",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

TY - JOUR

T1 - Quarkonium spectroscopy and perturbative QCD

T2 - A new perspective

AU - Brambilla, N.

AU - Sumino, Y.

AU - Vairo, A.

PY - 2001/8/2

Y1 - 2001/8/2

N2 - We study the energy spectrum of bottomonium in perturbative QCD, taking αs(MZ) = 0.1181 ± 0.0020 as input and fixing mbMS (mbMS on the γ(1S) mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as long as the coupling constant remains smaller than one. We perform a detailed analysis and discuss the size of nonperturbative effects. A new qualitative picture on the structure of the bottomonium spectrum is provided. The lowest-lying cc̄ and bc̄ states are also examined.

AB - We study the energy spectrum of bottomonium in perturbative QCD, taking αs(MZ) = 0.1181 ± 0.0020 as input and fixing mbMS (mbMS on the γ(1S) mass. Contrary to wide beliefs, perturbative QCD reproduces reasonably well the gross structure of the spectrum as long as the coupling constant remains smaller than one. We perform a detailed analysis and discuss the size of nonperturbative effects. A new qualitative picture on the structure of the bottomonium spectrum is provided. The lowest-lying cc̄ and bc̄ states are also examined.

UR - http://www.scopus.com/inward/record.url?scp=0035797635&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(01)00611-6

DO - 10.1016/S0370-2693(01)00611-6

M3 - Article

AN - SCOPUS:0035797635

SN - 0370-2693

VL - 513

SP - 381

EP - 390

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -

Quarkonium spectroscopy and perturbative QCD: A new perspective

Abstract

Access to Document

Other files and links

Fingerprint

Cite this