Expected accuracy in a measurement of the CKM angle α using a Dalitz plot analysis of B 0 → ρπ decays in the BTeV project

K. E. Shestermanov; A. N. Vasiliev; J. Butler; A. A. Derevshchikov; P. Kasper; V. V. Kiselev; V. I. Kravtsov; Y. Kubota; R. Kutschke; Yu A. Matulenko; N. G. Minaev; V. V. Mochalov; D. A. Morozov; L. V. Nogach; M. Rovere; A. V. Ryazantsev; P. A. Semenov; S. Stone; A. V. Uzunian; J. Yarba

doi:10.1134/S1063778807060087

Expected accuracy in a measurement of the CKM angle α using a Dalitz plot analysis of B ⁰ → ρπ decays in the BTeV project

K. E. Shestermanov, A. N. Vasiliev, J. Butler, A. A. Derevshchikov, P. Kasper, V. V. Kiselev, V. I. Kravtsov, Y. Kubota, R. Kutschke, Yu A. Matulenko, N. G. Minaev, V. V. Mochalov, D. A. Morozov, L. V. Nogach, M. Rovere, A. V. Ryazantsev, P. A. Semenov, S. Stone, A. V. Uzunian, J. Yarba

Physics and Astronomy (Twin Cities)

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Abstract

A precise measurement of the angle α in the CKM triangle is very important for a complete test of the Standard Model. A theoretically clean method to extract α is provided by B ⁰ → ρπ decays. Monte Carlo simulations to obtain the BTeV reconstruction efficiency and to estimate the signal-to-background ratio for these decays were performed. Finally the time-dependent Dalitz plot analysis, using the isospin amplitude formalism for tree and penguin contributions, was carried out. It was shown that, in one year of data taking, BTeV could achieve an accuracy on α better than 5°.

Original language	English (US)
Pages (from-to)	1058-1073
Number of pages	16
Journal	Physics of Atomic Nuclei
Volume	70
Issue number	6
DOIs	https://doi.org/10.1134/S1063778807060087
State	Published - Jun 2007

Bibliographical note

Funding Information:
This work was partially supported by the US National Science Foundation and the Department of Energy, the Russian Ministry of Education and Science, and INTAS (ref. no. 05-103-7571). We thank Alexander Bondar, Olivier Deschamps, and Daniele Pedrini for fruitful discussions.

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Shestermanov, K. E., Vasiliev, A. N., Butler, J., Derevshchikov, A. A., Kasper, P., Kiselev, V. V., Kravtsov, V. I., Kubota, Y., Kutschke, R., Matulenko, Y. A., Minaev, N. G., Mochalov, V. V., Morozov, D. A., Nogach, L. V., Rovere, M., Ryazantsev, A. V., Semenov, P. A., Stone, S., Uzunian, A. V., & Yarba, J. (2007). Expected accuracy in a measurement of the CKM angle α using a Dalitz plot analysis of B ⁰ → ρπ decays in the BTeV project. Physics of Atomic Nuclei, 70(6), 1058-1073. https://doi.org/10.1134/S1063778807060087

Shestermanov, KE, Vasiliev, AN, Butler, J, Derevshchikov, AA, Kasper, P, Kiselev, VV, Kravtsov, VI, Kubota, Y, Kutschke, R, Matulenko, YA, Minaev, NG, Mochalov, VV, Morozov, DA, Nogach, LV, Rovere, M, Ryazantsev, AV, Semenov, PA, Stone, S, Uzunian, AV & Yarba, J 2007, 'Expected accuracy in a measurement of the CKM angle α using a Dalitz plot analysis of B ⁰ → ρπ decays in the BTeV project', Physics of Atomic Nuclei, vol. 70, no. 6, pp. 1058-1073. https://doi.org/10.1134/S1063778807060087

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abstract = "A precise measurement of the angle α in the CKM triangle is very important for a complete test of the Standard Model. A theoretically clean method to extract α is provided by B 0 → ρπ decays. Monte Carlo simulations to obtain the BTeV reconstruction efficiency and to estimate the signal-to-background ratio for these decays were performed. Finally the time-dependent Dalitz plot analysis, using the isospin amplitude formalism for tree and penguin contributions, was carried out. It was shown that, in one year of data taking, BTeV could achieve an accuracy on α better than 5°.",

author = "Shestermanov, {K. E.} and Vasiliev, {A. N.} and J. Butler and Derevshchikov, {A. A.} and P. Kasper and Kiselev, {V. V.} and Kravtsov, {V. I.} and Y. Kubota and R. Kutschke and Matulenko, {Yu A.} and Minaev, {N. G.} and Mochalov, {V. V.} and Morozov, {D. A.} and Nogach, {L. V.} and M. Rovere and Ryazantsev, {A. V.} and Semenov, {P. A.} and S. Stone and Uzunian, {A. V.} and J. Yarba",

note = "Funding Information: This work was partially supported by the US National Science Foundation and the Department of Energy, the Russian Ministry of Education and Science, and INTAS (ref. no. 05-103-7571). We thank Alexander Bondar, Olivier Deschamps, and Daniele Pedrini for fruitful discussions.",

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AU - Vasiliev, A. N.

AU - Butler, J.

AU - Derevshchikov, A. A.

AU - Kasper, P.

AU - Kiselev, V. V.

AU - Kravtsov, V. I.

AU - Kubota, Y.

AU - Kutschke, R.

AU - Matulenko, Yu A.

AU - Minaev, N. G.

AU - Mochalov, V. V.

AU - Morozov, D. A.

AU - Nogach, L. V.

AU - Rovere, M.

AU - Ryazantsev, A. V.

AU - Semenov, P. A.

AU - Stone, S.

AU - Uzunian, A. V.

AU - Yarba, J.

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