Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays
A lattice QCD determination of the Lambda(c) -> N vector, axial vector, and tensor form factors is reported. The calculation was performed with 2 + 1 flavors of domain wall fermions at lattice spacings of a approximate to 0.11 and 0.085 fm and pion masses in the range 230 MeV less than or similar...
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AMER PHYSICAL SOC
2018
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ndltd-arizona.edu-oai-arizona.openrepository.com-10150-6271622018-04-01T03:00:31Z Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays Meinel, Stefan Univ Arizona, Dept Phys A lattice QCD determination of the Lambda(c) -> N vector, axial vector, and tensor form factors is reported. The calculation was performed with 2 + 1 flavors of domain wall fermions at lattice spacings of a approximate to 0.11 and 0.085 fm and pion masses in the range 230 MeV less than or similar to m(pi) less than or similar to 350 MeV. The form factors are extrapolated to the continuum limit and the physical pion mass using modified z expansions. The rates of the charged-current decays Lambda(c) -> ne(+)nu(e) and Lambda(c) -> n mu(+) nu(mu) are predicted to be (0.405 +/- 0.016(stat) +/- 0.020(syst))vertical bar V-cd vertical bar(2) ps(-1) and (0.396 +/- 0.016(stat) +/- 0.020(syst))vertical bar V-cd vertical bar(2) ps(-1), respectively. The phenomenology of the rare charm decay Lambda(c) -> p mu(+)mu(-) is also studied. The differential branching fraction, the fraction of longitudinally polarized dimuons, and the forward-backward asymmetry are calculated in the Standard Model and in an illustrative new-physics scenario. 2018-02-23 Article Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays 2018, 97 (3) Physical Review D 2470-0010 2470-0029 10.1103/PhysRevD.97.034511 http://hdl.handle.net/10150/627162 http://arizona.openrepository.com/arizona/handle/10150/627162 Physical Review D en https://link.aps.org/doi/10.1103/PhysRevD.97.034511 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. AMER PHYSICAL SOC |
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en |
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description |
A lattice QCD determination of the Lambda(c) -> N vector, axial vector, and tensor form factors is reported. The calculation was performed with 2 + 1 flavors of domain wall fermions at lattice spacings of a approximate to 0.11 and 0.085 fm and pion masses in the range 230 MeV less than or similar to m(pi) less than or similar to 350 MeV. The form factors are extrapolated to the continuum limit and the physical pion mass using modified z expansions. The rates of the charged-current decays Lambda(c) -> ne(+)nu(e) and Lambda(c) -> n mu(+) nu(mu) are predicted to be (0.405 +/- 0.016(stat) +/- 0.020(syst))vertical bar V-cd vertical bar(2) ps(-1) and (0.396 +/- 0.016(stat) +/- 0.020(syst))vertical bar V-cd vertical bar(2) ps(-1), respectively. The phenomenology of the rare charm decay Lambda(c) -> p mu(+)mu(-) is also studied. The differential branching fraction, the fraction of longitudinally polarized dimuons, and the forward-backward asymmetry are calculated in the Standard Model and in an illustrative new-physics scenario. |
author2 |
Univ Arizona, Dept Phys |
author_facet |
Univ Arizona, Dept Phys Meinel, Stefan |
author |
Meinel, Stefan |
spellingShingle |
Meinel, Stefan Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays |
author_sort |
Meinel, Stefan |
title |
Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays |
title_short |
Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays |
title_full |
Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays |
title_fullStr |
Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays |
title_full_unstemmed |
Λ(c) → N form factors from lattice QCD and phenomenology of Λ(c) → nℓ(+) νℓ and Λ(c) → pμ(+) μ(−) decays |
title_sort |
λ(c) → n form factors from lattice qcd and phenomenology of λ(c) → nℓ(+) νℓ and λ(c) → pμ(+) μ(−) decays |
publisher |
AMER PHYSICAL SOC |
publishDate |
2018 |
url |
http://hdl.handle.net/10150/627162 http://arizona.openrepository.com/arizona/handle/10150/627162 |
work_keys_str_mv |
AT meinelstefan lcnformfactorsfromlatticeqcdandphenomenologyoflcnlnlandlcpmmdecays |
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1718617759433097216 |