TY - JOUR
T1 - Amplitude analysis of B- →d+π-π- decays
AU - LHCb Collaboration
AU - Aaij, R.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Alvarez Cartelle, P.
AU - Alves, A. A.
AU - Amato, S.
AU - Amerio, S.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andreassi, G.
AU - Andreotti, M.
AU - Andrews, J. E.
AU - Appleby, R. B.
AU - Aquines Gutierrez, O.
AU - Archilli, F.
AU - D'Argent, P.
AU - Arnau Romeu, J.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Baalouch, M.
AU - Babuschkin, I.
AU - Bachmann, S.
AU - Back, J. J.
AU - Badalov, A.
AU - Baesso, C.
AU - Baker, S.
AU - Baldini, W.
AU - Bifani, S.
AU - Chatzikonstantinidis, G.
AU - Farley, N.
AU - Griffith, P.
AU - Kenyon, I. R.
AU - Lazzeroni, C.
AU - Mazurov, A.
AU - McCarthy, J.
AU - Pescatore, L.
AU - Sergi, A.
AU - Watson, N. K.
AU - Williams, T.
AU - Zarebski, K. A.
PY - 2016/10/5
Y1 - 2016/10/5
N2 - The Dalitz plot analysis technique is used to study the resonant substructures of B-→D+π-π- decays in a data sample corresponding to 3.0 fb-1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. A model-independent analysis of the angular moments demonstrates the presence of resonances with spins 1, 2 and 3 at high D+π- mass. The data are fitted with an amplitude model composed of a quasi-model-independent function to describe the D+π- S wave together with virtual contributions from the D∗(2007)0 and B∗0 states, and components corresponding to the D2∗(2460)0, D1∗(2680)0, D3∗(2760)0 and D2∗(3000)0 resonances. The masses and widths of these resonances are determined together with the branching fractions for their production in B-→D+π-π- decays. The D+π- S wave has phase motion consistent with that expected due to the presence of the D0∗(2400)0 state. These results constitute the first observations of the D3∗(2760)0 and D2∗(3000)0 resonances, with significances of 10σ and 6.6σ, respectively.
AB - The Dalitz plot analysis technique is used to study the resonant substructures of B-→D+π-π- decays in a data sample corresponding to 3.0 fb-1 of pp collision data recorded by the LHCb experiment during 2011 and 2012. A model-independent analysis of the angular moments demonstrates the presence of resonances with spins 1, 2 and 3 at high D+π- mass. The data are fitted with an amplitude model composed of a quasi-model-independent function to describe the D+π- S wave together with virtual contributions from the D∗(2007)0 and B∗0 states, and components corresponding to the D2∗(2460)0, D1∗(2680)0, D3∗(2760)0 and D2∗(3000)0 resonances. The masses and widths of these resonances are determined together with the branching fractions for their production in B-→D+π-π- decays. The D+π- S wave has phase motion consistent with that expected due to the presence of the D0∗(2400)0 state. These results constitute the first observations of the D3∗(2760)0 and D2∗(3000)0 resonances, with significances of 10σ and 6.6σ, respectively.
UR - http://www.scopus.com/inward/record.url?scp=84992043935&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.94.072001
DO - 10.1103/PhysRevD.94.072001
M3 - Article
AN - SCOPUS:84992043935
VL - 94
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 7
M1 - 072001
ER -