Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays

J.Y. Chen; K. Peters; L.L. Zhang; S. Chen; W. Wang; X.H. Li; M.A. Baak; G. Raven; H. Snoek; P. David; H. Schroder; N. de Groot; H. Liu; N. van Bakel; Z. Yu

doi:10.1103/PhysRevD.75.031101

Branching fraction measurement of (B)over-bar(0)-> D()+pi(-) and B--> D-()0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays

J.Y. Chen, K. Peters, L.L. Zhang, S. Chen, W. Wang, X.H. Li, M.A. Baak, G. Raven, H. Snoek, P. David, H. Schroder, N. de Groot, H. Liu, N. van Bakel, Z. Yu

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Abstract

Using 65×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B(B̄0→D+π- )=(2.55±0.05±0.16)×10-3, B(B̄0→D*+π-)=(2. 79±0.08±0.17)×10-3, B(B-→D0π-)=(4.90±0. 07±0.22)×10-3 and B(B-→D*0π-)=(5.52±0. 17±0.42)×10-3, where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay B̄0→D(*) 0π0, the cosines of the strong phase difference δ between the I=1/2 and I=3/2 isospin amplitudes are determined to be cos δ=0.872-0.007-0.029+0. 008+0.031 for the B̄→Dπ process and cos δ=0.924-0.017-0. 054+0.019+0.063 for the B̄→D*π process. Under the isospin symmetry, the results for cos δ suggest the presence of final-state interactions in the Dπ system. © 2007 The American Physical Society.

Original language	English
Journal	Physical Review D
Volume	75
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.75.031101
Publication status	Published - 2007

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Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays

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10.1103/PhysRevD.75.031101

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Chen, J. Y., Peters, K., Zhang, L. L., Chen, S., Wang, W., Li, X. H., Baak, M. A., Raven, G., Snoek, H., David, P., Schroder, H., de Groot, N., Liu, H., van Bakel, N., & Yu, Z. (2007). Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays. Physical Review D, 75(3). https://doi.org/10.1103/PhysRevD.75.031101

@article{c899e8fdd6914f94b1011f04e7927aac,

title = "Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays",

abstract = "Using 65×106 Υ(4S)→B{\=B} events collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B({\=B}0→D+π- )=(2.55±0.05±0.16)×10-3, B({\=B}0→D*+π-)=(2. 79±0.08±0.17)×10-3, B(B-→D0π-)=(4.90±0. 07±0.22)×10-3 and B(B-→D*0π-)=(5.52±0. 17±0.42)×10-3, where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay {\=B}0→D(*) 0π0, the cosines of the strong phase difference δ between the I=1/2 and I=3/2 isospin amplitudes are determined to be cos δ=0.872-0.007-0.029+0. 008+0.031 for the {\=B}→Dπ process and cos δ=0.924-0.017-0. 054+0.019+0.063 for the {\=B}→D*π process. Under the isospin symmetry, the results for cos δ suggest the presence of final-state interactions in the Dπ system. {\textcopyright} 2007 The American Physical Society.",

author = "J.Y. Chen and K. Peters and L.L. Zhang and S. Chen and W. Wang and X.H. Li and M.A. Baak and G. Raven and H. Snoek and P. David and H. Schroder and {de Groot}, N. and H. Liu and {van Bakel}, N. and Z. Yu",

note = "Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays",

year = "2007",

doi = "10.1103/PhysRevD.75.031101",

language = "English",

volume = "75",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Physical Society",

number = "3",

}

Chen, JY, Peters, K, Zhang, LL, Chen, S, Wang, W, Li, XH, Baak, MA, Raven, G, Snoek, H, David, P, Schroder, H, de Groot, N, Liu, H, van Bakel, N & Yu, Z 2007, 'Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays', Physical Review D, vol. 75, no. 3. https://doi.org/10.1103/PhysRevD.75.031101

TY - JOUR

T1 - Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays

AU - Chen, J.Y.

AU - Peters, K.

AU - Zhang, L.L.

AU - Chen, S.

AU - Wang, W.

AU - Li, X.H.

AU - Baak, M.A.

AU - Raven, G.

AU - Snoek, H.

AU - David, P.

AU - Schroder, H.

AU - de Groot, N.

AU - Liu, H.

AU - van Bakel, N.

AU - Yu, Z.

N1 - Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays

PY - 2007

Y1 - 2007

N2 - Using 65×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B(B̄0→D+π- )=(2.55±0.05±0.16)×10-3, B(B̄0→D*+π-)=(2. 79±0.08±0.17)×10-3, B(B-→D0π-)=(4.90±0. 07±0.22)×10-3 and B(B-→D*0π-)=(5.52±0. 17±0.42)×10-3, where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay B̄0→D(*) 0π0, the cosines of the strong phase difference δ between the I=1/2 and I=3/2 isospin amplitudes are determined to be cos δ=0.872-0.007-0.029+0. 008+0.031 for the B̄→Dπ process and cos δ=0.924-0.017-0. 054+0.019+0.063 for the B̄→D*π process. Under the isospin symmetry, the results for cos δ suggest the presence of final-state interactions in the Dπ system. © 2007 The American Physical Society.

AB - Using 65×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II e+e- storage ring at the Stanford Linear Accelerator Center, we measure the color-favored branching fractions B(B̄0→D+π- )=(2.55±0.05±0.16)×10-3, B(B̄0→D*+π-)=(2. 79±0.08±0.17)×10-3, B(B-→D0π-)=(4.90±0. 07±0.22)×10-3 and B(B-→D*0π-)=(5.52±0. 17±0.42)×10-3, where the first error is statistical and the second is systematic. With these results and the current world average for the branching fraction for the color-suppressed decay B̄0→D(*) 0π0, the cosines of the strong phase difference δ between the I=1/2 and I=3/2 isospin amplitudes are determined to be cos δ=0.872-0.007-0.029+0. 008+0.031 for the B̄→Dπ process and cos δ=0.924-0.017-0. 054+0.019+0.063 for the B̄→D*π process. Under the isospin symmetry, the results for cos δ suggest the presence of final-state interactions in the Dπ system. © 2007 The American Physical Society.

U2 - 10.1103/PhysRevD.75.031101

DO - 10.1103/PhysRevD.75.031101

M3 - Article

SN - 1550-7998

VL - 75

JO - Physical Review D

JF - Physical Review D

IS - 3

ER -

Branching fraction measurement of (B)over-bar(0)-> D(*)+pi(-) and B--> D-(*)0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays

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Branching fraction measurement of (B)over-bar(0)-> D()+pi(-) and B--> D-()0 pi(-) and isospin analysis of (B)over-bar -> D-(*)pi decays