Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131478
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DC Field | Value | Language |
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dc.contributor.author | Pineda, Antonio (Pineda Ruiz) | - |
dc.contributor.author | Ynduráin, F. J. | - |
dc.date.accessioned | 2019-04-04T14:18:26Z | - |
dc.date.available | 2019-04-04T14:18:26Z | - |
dc.date.issued | 1998-10-02 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131478 | - |
dc.description.abstract | We include two loop, relativistic one loop and second order relativistic tree level corrections, plus leading nonperturbative contributions, to obtain a calculation of the lower states in the heavy quarkonium spectrum correct up to, and including, O ( α 4 s ) and leading Λ 4 / m 4 terms. This allows us, in particular, to obtain a model-independent determination of the pole masses of the b,c quarks, m b = 5015 + 110 − 70 MeV , m c = 1884 + 222 − 133 MeV , to which correspond the ¯ MS masses m b ( m 2 b ) = 4453 + 50 − 32 MeV , m c ( m 2 c ) = 1547 + 169 − 102 MeV . The decay Γ ( → Υ e + e − ) is found to be in agreement with experiment, Γ ( → Υ e + e − ) = 1.135 + 0.27 − 0.29 keV ( expt . = 1.320 ± 0.04 keV ) , and the hyperfine splitting is predicted to be M ( Υ ) − M ( η ) = 48.5 + 15.7 − 12.2 MeV . | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.58.094022 | - |
dc.relation.ispartof | Physical Review D, 1998, vol. 58, num. 9, p. 094022 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.58.094022 | - |
dc.rights | (c) American Physical Society, 1998 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Quarks | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Quarks | - |
dc.title | Calculation of the quarkonium spectrum and mb, mc to order α4s | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 508364 | - |
dc.date.updated | 2019-04-04T14:18:26Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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508364.pdf | 179.92 kB | Adobe PDF | View/Open |
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