Amplitude analysis of B- →d+π-π- decays

LHCb Collaboration

doi:10.1103/PhysRevD.94.072001

Amplitude analysis of B- →d+π-π- decays

LHCb Collaboration

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Abstract

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.

Original language	English
Article number	072001
Journal	Physical Review D
Volume	94
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.94.072001
Publication status	Published - 5 Oct 2016

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.94.072001Licence: Creative Commons: Attribution (CC BY)

Aaij_et_al_Amplitude_analysis_of_B_Physical_Review_D_2016
Aaij, R, Adeva, B, Adinolfi, M et al. (764 more authors) (2016) Amplitude analysis of B− → D+ π−π− decays. Physical Review D, 94 (7). 072001.
Final published version, 1.97 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

@article{4e97c50a6ef148f087f62592e6650fa2,

title = "Amplitude analysis of B- →d+π-π- decays",

abstract = "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.",

author = "{LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and P. D'Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and W. Baldini and S. Bifani and G. Chatzikonstantinidis and N. Farley and P. Griffith and Kenyon, {I. R.} and C. Lazzeroni and A. Mazurov and J. McCarthy and L. Pescatore and A. Sergi and Watson, {N. K.} and T. Williams and Zarebski, {K. A.}",

year = "2016",

month = oct,

day = "5",

doi = "10.1103/PhysRevD.94.072001",

language = "English",

volume = "94",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society (APS)",

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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.

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U2 - 10.1103/PhysRevD.94.072001

DO - 10.1103/PhysRevD.94.072001

M3 - Article

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SN - 2470-0010

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JO - Physical Review D

JF - Physical Review D

IS - 7

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ER -

Amplitude analysis of B- →d+π-π- decays

Abstract

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