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| 001 | 202895 | ||
| 005 | 20210129220245.0 | ||
| 024 | 7 | _ | |a 10.1103/PhysRevD.91.014503 |2 doi |
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| 024 | 7 | _ | |a 1089-4918 |2 ISSN |
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| 100 | 1 | _ | |a Bali, Gunnar S. |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a D s → η , η ′ semileptonic decay form factors with disconnected quark loop contributions |
| 260 | _ | _ | |a [S.l.] |c 2015 |b Soc. |
| 264 | _ | 1 | |3 online |2 Crossref |b American Physical Society (APS) |c 2015-01-14 |
| 264 | _ | 1 | |3 print |2 Crossref |b American Physical Society (APS) |c 2015-01-01 |
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| 520 | _ | _ | |a We calculate for the first time the form factors of the semileptonic decays of the Ds meson to η and η′ using lattice techniques. As a by-product of the calculation we obtain the masses and leading distribution amplitudes of the η and η′ mesons. We use Nf=2+1 nonperturbatively improved clover fermions on configurations with a lattice spacing a∼0.075 fm. We are able to obtain clear signals for relevant matrix elements, using several noise reduction techniques, for both the connected and the disconnected contributions. This includes a new method for reducing the variance of pseudoscalar disconnected two-point functions. At zero momentum transfer, we obtain for the scalar form factors, |fDs→η0|=0.564(11) and |fDs→η′0|=0.437(18) at Mπ≈470 MeV, as well as |fDs→η0|=0.542(13) and |fDs→η′0|=0.404(25) at Mπ≈370 MeV, where the errors are statistical only. |
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| 700 | 1 | _ | |a Collins, Sara |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Dürr, Stephan |0 P:(DE-Juel1)132580 |b 2 |
| 700 | 1 | _ | |a Kanamori, Issaku |0 P:(DE-HGF)0 |b 3 |e Corresponding author |
| 773 | 1 | 8 | |a 10.1103/physrevd.91.014503 |b : American Physical Society (APS), 2015-01-14 |n 1 |p 014503 |3 journal-article |2 Crossref |t Physical Review D |v 91 |y 2015 |x 1550-7998 |
| 773 | _ | _ | |a 10.1103/PhysRevD.91.014503 |g Vol. 91, no. 1, p. 014503 |0 PERI:(DE-600)2844732-3 |n 1 |p 014503 |t Physical review / D |v 91 |y 2015 |x 1550-7998 |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/202895/files/PhysRevD.91.014503.pdf |
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