Počet záznamů: 1
Calculation of doublet capture rate for muon capture in deuterium within chiral effective field theory
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SYSNO ASEP 0384864 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Calculation of doublet capture rate for muon capture in deuterium within chiral effective field theory Tvůrce(i) Adam, Jiří (UJF-V) RID, ORCID, SAI
Tater, Miloš (UJF-V) RID, ORCID, SAI
Truhlík, Emil (UJF-V) RID
Epelbaum, E. (DE)
Machleidt, R. (US)
Ricci, P. (IT)Celkový počet autorů 6 Zdroj.dok. Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 709, 1-2 (2012), s. 93-100Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova negative muon capture ; deuteron ; effective field theory ; meson exchange currents Vědní obor RIV BE - Teoretická fyzika CEP LC06002 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GAP203/11/0701 GA ČR - Grantová agentura ČR Institucionální podpora UJF-V - RVO:61389005 UT WOS 000302111200014 DOI https://doi.org/10.1016/j.physletb.2012.01.065 Anotace The doublet capture rate Lambda(1/2) of the negative muon capture in deuterium is calculated employing the nuclear wave functions generated from accurate nucleon-nucleon (NN) potentials constructed at next-to-next-to-next-to-leading order of heavy-baryon chiral perturbation theory and the weak meson exchange current operator derived within the same formalism. All but one of the low-energy constants that enter the calculation were fixed from pion-nucleon and nucleon-nucleon scattering data. The low-energy constant (d) over cap (R) (c(D)). which cannot be determined from the purely two-nucleon data, was extracted recently from the triton beta-decay and the binding energies of the three-nucleon systems. The calculated values of Lambda(1/2) show a rather large spread for the used values of the (d) over cap (R). Precise measurement of Lambda(1/2) in the future will not only help to constrain the value of (d) over cap (R), but also provide a highly nontrivial test of the nuclear chiral EFT framework. Besides, the precise knowledge of the constant (d) over cap (R) will allow for consistent calculations of other two-nucleon weak processes, such as proton-proton fusion and solar neutrino scattering on deuterons, which are important for astrophysics. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2013
Počet záznamů: 1