Study of B-0 -> D*(-) pi(+)pi(-)pi(+) and B-0 -> D*K--(+)pi(-)pi(+) decays

R. Aaij*, C.A. Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P.A. Cartelle, A.A. Alves, S. Amato, Y. Amhis, L. Anderlini, J. Anderson, R. AndreassenR.B. Appleby, O.A. Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J.J. Back, C. Baesso, V. Balagura, W. Baldini, R.J. Barlow, C. Barschel, S. Barsuk, W. Barter, T. Bauer, A. Bay, J. Beddow, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, J. van den Brand

*Corresponding author for this work

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Abstract

Using proton-proton collision data collected by the LHCb experiment at root s = 7 TeV, corresponding to an integrated luminosity of 1.0 fb(-1), the ratio of branching fractions of the B-0 -> D*(-)pi(+)pi(-)pi(+) decay relative to the B-0 -> D*(-)pi(+) decay is measured to be B(B-0 -> D*(-)pi(+)pi(-)pi(+))/B(B-0 -> D*(-)pi(+)) = 2.64 +/- 0.4(stat) +/- 0.13(syst). The Cabibbo-suppressed decay B-0 -> D*K--(+)pi(-)pi(+) is observed for the first time, and the measured ratio of branching fractions is B(B-0 -> D*K--(+)pi(-)pi(+))/B(B-0 -> D*K--(+)pi(-)pi(+)) = (6.47 +/- 0.37(stat) +/- 0.35(syst)) x 10(-2). A search for orbital excitations of charm mesons contributing to the B-0 -> D*(-)pi(+)pi(-)pi(+) final state is also performed, and the first observation of the B-0 -> (D) over bar (1)(2420)(0)pi(+)pi(-) decay is reported with the ratio of branching fractions B(B-0 ->(D-1(2420)(0)-> D*(-)pi(+))pi(-)pi(+))/B(B-0 -> D*(-)pi(+)pi(-)pi(+)) = (2.04 +/- 0.42(stat) +/- 0.22(syst)) x 10(-2), where the numerator represents a product of the branching fractions B(B-0 -> (D) over bar (1)(2420)(0)pi(-)pi(+)) and B(D-1(2420)(0) -> D*(-)pi(+)).
Original languageEnglish
Article number092001
Number of pages10
JournalPhysical Review D
Volume87
Issue number9
DOIs
Publication statusPublished - 3 May 2013
Externally publishedYes

Keywords

  • TOOL

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