Measurement of |Vub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays

A. Limosani; K. Abe; K. Abe; I. Adachi; H. Aihara; Y. Asano; T. Aushev; S. Bahinipati; A. M. Bakich; E. Barberio; U. Bitenc; I. Bizjak; S. Blyth; A. Bondar; A. Bozek; M. Bračko; J. Brodzicka; T. E. Browder; Y. Chao; A. Chen; K. F. Chen; W. T. Chen; B. G. Cheon; R. Chistov; Y. Choi; A. Chuvikov; S. Cole; J. Dalseno; M. Danilov; M. Dash; J. Dragic; A. Drutskoy; S. Eidelman; S. Fratina; N. Gabyshev; T. Gershon; G. Gokhroo; B. Golob; A. Gorišek; T. Hara; N. C. Hastings; K. Hayasaka; H. Hayashii; M. Hazumi; L. Hinz; T. Hokuue; Y. Hoshi; S. Hou; W. S. Hou; T. Iijima; A. Imoto; K. Inami; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; J. H. Kang; J. S. Kang; N. Katayama; H. Kawai; T. Kawasaki; H. R. Khan; H. Kichimi; H. J. Kim; H. O. Kim; S. K. Kim; S. M. Kim; K. Kinoshita; S. Korpar; P. Krokovny; R. Kulasiri; S. Kumar; C. C. Kuo; Y. J. Kwon; J. S. Lange; G. Leder; T. Lesiak; J. Li; S. W. Lin; D. Liventsev; J. MacNaughton; G. Majumder; F. Mandl; T. Matsumoto; Y. Mikami; W. Mitaroff; K. Miyabayashi; H. Miyake; H. Miyata; R. Mizuk; D. Mohapatra; T. Mori; T. Nagamine; Y. Nagasaka; E. Nakano; M. Nakao; Z. Natkaniec; S. Nishida; O. Nitoh

doi:10.1016/j.physletb.2005.06.011

Measurement of |V_ub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays

A. Limosani, K. Abe, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, E. Barberio, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, Y. Chao, A. ChenK. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, T. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kulasiri, S. Kumar, C. C. Kuo, Y. J. Kwon, J. S. Lange, G. Leder, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh

Department of Physics

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Abstract

We report measurements of partial branching fractions of inclusive charmless semileptonic B-meson decays at the endpoint of the electron momentum spectrum. The measurements are made in six overlapping momentum intervals that have lower bounds ranging from 1.9 to 2.4 GeV/c and a common upper bound of 2.6 GeV/c, as measured in the centre of mass frame. The results are based on a sample of 29 million BB̄ pairs, accumulated by the Belle detector at the KEKB asymmetric e+e- collider operating on the Υ(4S) resonance. In the momentum interval ranging from 1.9 to 2.6 GeV/c we measure the partial branching fraction ΔB(B→Xueνe)=(8.47±0.37±1.53)×10-4, where the first error is statistical and the second is systematic. A prediction of the partial rate R=(21.69±3.62-1.98+2.18)|V_ub|² ps-1 in this momentum interval based on theory is calculated with input HQET parameters that have been derived from Belle's measurement of the B→Xsγ photon energy spectrum, where the first error is due to the uncertainty on HQET parameters and the second error is from theory. Using both ΔB(B→Xueνe) and R we find |V _ub|=(5.08±0.47±0.42-0.23+0.26)×10-3, where the first error is from the partial branching fraction, and the second and third errors are from uncertainties in R.

Original language	English
Pages (from-to)	28-40
Number of pages	13
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	621
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2005.06.011
Publication status	Published - 2005 Aug 11

Bibliographical note

Funding Information:
We are grateful to Matthias Neubert, Bjorn Lange, Gil Paz and Stefan Bosch for very helpful discussions, correspondences, explanations and for providing us with their theoretical computations implemented in an inclusive generator. We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council, the Australian Department of Education, Science and Training, Australian Postgraduate Award and the David Hay Postgraduate Writing-Up Award; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Higher Education, Science and Technology of the Republic of Slovenia; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2005.06.011

Cite this

Limosani, A., Abe, K., Abe, K., Adachi, I., Aihara, H., Asano, Y., Aushev, T., Bahinipati, S., Bakich, A. M., Barberio, E., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chao, Y., ... Nitoh, O. (2005). Measurement of |V_ub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 621(1-2), 28-40. https://doi.org/10.1016/j.physletb.2005.06.011

@article{9cf1405ce4b2470facc65e05f965186d,

title = "Measurement of |Vub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays",

abstract = "We report measurements of partial branching fractions of inclusive charmless semileptonic B-meson decays at the endpoint of the electron momentum spectrum. The measurements are made in six overlapping momentum intervals that have lower bounds ranging from 1.9 to 2.4 GeV/c and a common upper bound of 2.6 GeV/c, as measured in the centre of mass frame. The results are based on a sample of 29 million B{\=B} pairs, accumulated by the Belle detector at the KEKB asymmetric e+e- collider operating on the Υ(4S) resonance. In the momentum interval ranging from 1.9 to 2.6 GeV/c we measure the partial branching fraction ΔB(B→Xueνe)=(8.47±0.37±1.53)×10-4, where the first error is statistical and the second is systematic. A prediction of the partial rate R=(21.69±3.62-1.98+2.18)|Vub|2 ps-1 in this momentum interval based on theory is calculated with input HQET parameters that have been derived from Belle's measurement of the B→Xsγ photon energy spectrum, where the first error is due to the uncertainty on HQET parameters and the second error is from theory. Using both ΔB(B→Xueνe) and R we find |V ub|=(5.08±0.47±0.42-0.23+0.26)×10-3, where the first error is from the partial branching fraction, and the second and third errors are from uncertainties in R.",

author = "A. Limosani and K. Abe and K. Abe and I. Adachi and H. Aihara and Y. Asano and T. Aushev and S. Bahinipati and Bakich, {A. M.} and E. Barberio and U. Bitenc and I. Bizjak and S. Blyth and A. Bondar and A. Bozek and M. Bra{\v c}ko and J. Brodzicka and Browder, {T. E.} and Y. Chao and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and R. Chistov and Y. Choi and A. Chuvikov and S. Cole and J. Dalseno and M. Danilov and M. Dash and J. Dragic and A. Drutskoy and S. Eidelman and S. Fratina and N. Gabyshev and T. Gershon and G. Gokhroo and B. Golob and A. Gori{\v s}ek and T. Hara and Hastings, {N. C.} and K. Hayasaka and H. Hayashii and M. Hazumi and L. Hinz and T. Hokuue and Y. Hoshi and S. Hou and Hou, {W. S.} and T. Iijima and A. Imoto and K. Inami and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and Kang, {J. H.} and Kang, {J. S.} and N. Katayama and H. Kawai and T. Kawasaki and Khan, {H. R.} and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {S. K.} and Kim, {S. M.} and K. Kinoshita and S. Korpar and P. Krokovny and R. Kulasiri and S. Kumar and Kuo, {C. C.} and Kwon, {Y. J.} and Lange, {J. S.} and G. Leder and T. Lesiak and J. Li and Lin, {S. W.} and D. Liventsev and J. MacNaughton and G. Majumder and F. Mandl and T. Matsumoto and Y. Mikami and W. Mitaroff and K. Miyabayashi and H. Miyake and H. Miyata and R. Mizuk and D. Mohapatra and T. Mori and T. Nagamine and Y. Nagasaka and E. Nakano and M. Nakao and Z. Natkaniec and S. Nishida and O. Nitoh",

note = "Funding Information: We are grateful to Matthias Neubert, Bjorn Lange, Gil Paz and Stefan Bosch for very helpful discussions, correspondences, explanations and for providing us with their theoretical computations implemented in an inclusive generator. We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council, the Australian Department of Education, Science and Training, Australian Postgraduate Award and the David Hay Postgraduate Writing-Up Award; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Higher Education, Science and Technology of the Republic of Slovenia; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.",

year = "2005",

month = aug,

day = "11",

doi = "10.1016/j.physletb.2005.06.011",

language = "English",

volume = "621",

pages = "28--40",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Limosani, A, Abe, K, Abe, K, Adachi, I, Aihara, H, Asano, Y, Aushev, T, Bahinipati, S, Bakich, AM, Barberio, E, Bitenc, U, Bizjak, I, Blyth, S, Bondar, A, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chistov, R, Choi, Y, Chuvikov, A, Cole, S, Dalseno, J, Danilov, M, Dash, M, Dragic, J, Drutskoy, A, Eidelman, S, Fratina, S, Gabyshev, N, Gershon, T, Gokhroo, G, Golob, B, Gorišek, A, Hara, T, Hastings, NC, Hayasaka, K, Hayashii, H, Hazumi, M, Hinz, L, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Iijima, T, Imoto, A, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Kang, JH, Kang, JS, Katayama, N, Kawai, H, Kawasaki, T, Khan, HR, Kichimi, H, Kim, HJ, Kim, HO, Kim, SK, Kim, SM, Kinoshita, K, Korpar, S, Krokovny, P, Kulasiri, R, Kumar, S, Kuo, CC, Kwon, YJ, Lange, JS, Leder, G, Lesiak, T, Li, J, Lin, SW, Liventsev, D, MacNaughton, J, Majumder, G, Mandl, F, Matsumoto, T, Mikami, Y, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Mizuk, R, Mohapatra, D, Mori, T, Nagamine, T, Nagasaka, Y, Nakano, E, Nakao, M, Natkaniec, Z, Nishida, S & Nitoh, O 2005, 'Measurement of |V_ub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 621, no. 1-2, pp. 28-40. https://doi.org/10.1016/j.physletb.2005.06.011

TY - JOUR

T1 - Measurement of |Vub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays

AU - Limosani, A.

AU - Abe, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Asano, Y.

AU - Aushev, T.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Blyth, S.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, Y.

AU - Chuvikov, A.

AU - Cole, S.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Dragic, J.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Gershon, T.

AU - Gokhroo, G.

AU - Golob, B.

AU - Gorišek, A.

AU - Hara, T.

AU - Hastings, N. C.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Hinz, L.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Iijima, T.

AU - Imoto, A.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kang, J. H.

AU - Kang, J. S.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Khan, H. R.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, S. K.

AU - Kim, S. M.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kumar, S.

AU - Kuo, C. C.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Leder, G.

AU - Lesiak, T.

AU - Li, J.

AU - Lin, S. W.

AU - Liventsev, D.

AU - MacNaughton, J.

AU - Majumder, G.

AU - Mandl, F.

AU - Matsumoto, T.

AU - Mikami, Y.

AU - Mitaroff, W.

AU - Miyabayashi, K.

AU - Miyake, H.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohapatra, D.

AU - Mori, T.

AU - Nagamine, T.

AU - Nagasaka, Y.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

N1 - Funding Information: We are grateful to Matthias Neubert, Bjorn Lange, Gil Paz and Stefan Bosch for very helpful discussions, correspondences, explanations and for providing us with their theoretical computations implemented in an inclusive generator. We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council, the Australian Department of Education, Science and Training, Australian Postgraduate Award and the David Hay Postgraduate Writing-Up Award; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Higher Education, Science and Technology of the Republic of Slovenia; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.

PY - 2005/8/11

Y1 - 2005/8/11

N2 - We report measurements of partial branching fractions of inclusive charmless semileptonic B-meson decays at the endpoint of the electron momentum spectrum. The measurements are made in six overlapping momentum intervals that have lower bounds ranging from 1.9 to 2.4 GeV/c and a common upper bound of 2.6 GeV/c, as measured in the centre of mass frame. The results are based on a sample of 29 million BB̄ pairs, accumulated by the Belle detector at the KEKB asymmetric e+e- collider operating on the Υ(4S) resonance. In the momentum interval ranging from 1.9 to 2.6 GeV/c we measure the partial branching fraction ΔB(B→Xueνe)=(8.47±0.37±1.53)×10-4, where the first error is statistical and the second is systematic. A prediction of the partial rate R=(21.69±3.62-1.98+2.18)|Vub|2 ps-1 in this momentum interval based on theory is calculated with input HQET parameters that have been derived from Belle's measurement of the B→Xsγ photon energy spectrum, where the first error is due to the uncertainty on HQET parameters and the second error is from theory. Using both ΔB(B→Xueνe) and R we find |V ub|=(5.08±0.47±0.42-0.23+0.26)×10-3, where the first error is from the partial branching fraction, and the second and third errors are from uncertainties in R.

AB - We report measurements of partial branching fractions of inclusive charmless semileptonic B-meson decays at the endpoint of the electron momentum spectrum. The measurements are made in six overlapping momentum intervals that have lower bounds ranging from 1.9 to 2.4 GeV/c and a common upper bound of 2.6 GeV/c, as measured in the centre of mass frame. The results are based on a sample of 29 million BB̄ pairs, accumulated by the Belle detector at the KEKB asymmetric e+e- collider operating on the Υ(4S) resonance. In the momentum interval ranging from 1.9 to 2.6 GeV/c we measure the partial branching fraction ΔB(B→Xueνe)=(8.47±0.37±1.53)×10-4, where the first error is statistical and the second is systematic. A prediction of the partial rate R=(21.69±3.62-1.98+2.18)|Vub|2 ps-1 in this momentum interval based on theory is calculated with input HQET parameters that have been derived from Belle's measurement of the B→Xsγ photon energy spectrum, where the first error is due to the uncertainty on HQET parameters and the second error is from theory. Using both ΔB(B→Xueνe) and R we find |V ub|=(5.08±0.47±0.42-0.23+0.26)×10-3, where the first error is from the partial branching fraction, and the second and third errors are from uncertainties in R.

UR - http://www.scopus.com/inward/record.url?scp=22544456246&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=22544456246&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2005.06.011

DO - 10.1016/j.physletb.2005.06.011

M3 - Article

AN - SCOPUS:22544456246

SN - 0370-2693

VL - 621

SP - 28

EP - 40

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -