Widhalm, L;
Abe, K;
Abe, K;
Adachi, I;
Aihara, H;
Arinstein, K;
Asano, Y;
... Belle Collaboration; + view all
(2006)
Measurement of D-0 ->pi l nu(Kl nu) form factors and absolute branching fractions.
PHYS REV LETT
, 97
(6)
, Article 061804. 10.1103/PhysRevLett.97.061804.
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Abstract
Using a 282 fb(-1) data sample collected by the Belle experiment at the KEKB e(+)e(-) collider, we study D-0 decays to K-center dot(+)nu and pi(-)center dot(+)nu final states. The D-0 flavor and momentum are tagged through a full reconstruction of the recoiling charm meson and additional mesons from fragmentation. The reconstruction method provides very good resolution in neutrino momentum and in q(2)=(p(center dot)+p(nu))(2). Normalizing to the total number of D-0 tags, we measure the absolute branching fractions to be B(D-0 -> K center dot nu)=(3.45 +/- 0.07(stat)+/- 0.20(syst))% and B(D-0 ->pi center dot nu)=(0.255 +/- 0.019(stat)+/- 0.016(syst))% and the semileptonic form factors (within the modified pole model) f(+)(K)(0)=0.695 +/- 0.007(stat)+/- 0.022(syst) and f(+)(pi)(0)=0.624 +/- 0.020(stat)+/- 0.030(syst).
| Type: | Article |
|---|---|
| Title: | Measurement of D-0 ->pi l nu(Kl nu) form factors and absolute branching fractions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.97.061804 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.97.061804 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| Keywords: | SEMILEPTONIC DECAYS, LATTICE QCD, MESONS, HEAVY |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1308514 |
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