Observation of the B+ →D∗-K+π+ decay
- Aaij, R.
- Adeva, B.
- Ajaltouni, Z.
- Akar, S.
- Alessio, F.
- Alexander, M.
- Ali, S.
- Alkhazov, G.
- Alvarez Cartelle, P.
- Alves, A. A.
- Amato, S.
- Amerio, S.
- Amhis, Y.
- An, L.
- Anderlini, L.
- Andreassi, G.
- Andreotti, M.
- Andrews, J. E.
- Appleby, R. B.
- Archilli, F.
- D'Argent, P.
- Arnau Romeu, J.
- Artamonov, A.
- Artuso, M.
- Aslanides, E.
- Auriemma, G.
- Baalouch, M.
- Babuschkin, I.
- Bachmann, S.
- Back, J. J.
- Badalov, A.
- Baesso, C.
- Baker, S.
- Carvalho Akiba, K.
- Coco, V.
- De Bruyn, K.
- Ferro-Luzzi, M.
- Ketel, T.
- Van Leerdam, J.
- Merk, M.
- Onderwater, C. J.G.
- Raven, G.
- Schiller, M.
- Serra, N.
- Storaci, B.
- Syropoulos, V.
- Van Tilburg, J.
- Tolk, S.
- Tsopelas, P.
- Tuning, N.
Publication date
July 2017
DOIAbstract
The B+→D∗-K+π+ decay potentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. A clear signal is observed, and the ratio of its branching fraction to that of the B+→D∗-π+π+ normalization channel is measured to be B(B+→D∗-K+π+)/B(B+→D∗-π+π+)=(6.39±0.27±0.48)×10-2, where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+→D∗-K+π+ decay
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