Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle

C. Beleño; A. Frey; I. Adachi; H. Aihara; D. M. Asner; H. Atmacan; T. Aushev; R. Ayad; P. Behera; J. Bennett; F. Bernlochner; V. Bhardwaj; T. Bilka; J. Biswal; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; M. Campajola; D. Červenkov; P. Chang; A. Chen; K. Chilikin; K. Cho; Y. Choi; D. Cinabro; S. Cunliffe; N. Dash; F. Di Capua; J. Dingfelder; Z. DoleŽal; T. V. Dong; S. Eidelman; D. Epifanov; J. E. Fast; T. Ferber; B. G. Fulsom; R. Garg; V. Gaur; N. Gabyshev; A. Garmash; A. Giri; P. Goldenzweig; Y. Guan; O. Hartbrich; K. Hayasaka; H. Hayashii; W. S. Hou; K. Inami; A. Ishikawa; M. Iwasaki; W. W. Jacobs; H. B. Jeon; Y. Jin; K. K. Joo; C. Kiesling; B. H. Kim; D. Y. Kim; K. H. Kim; S. H. Kim; Y. K. Kim; T. D. Kimmel; K. Kinoshita; P. Kodyš; S. Korpar; D. Kotchetkov; P. KriŽan; R. Kroeger; P. Krokovny; T. Kuhr; R. Kulasiri; R. Kumar; A. Kuzmin; Y. J. Kwon; K. Lalwani; S. C. Lee; L. K. Li; Y. B. Li; L. Li Gioi; J. Libby; K. Lieret; D. Liventsev; T. Luo; J. Macnaughton; C. Macqueen; M. Masuda; T. Matsuda; M. Merola; K. Miyabayashi; G. B. Mohanty; T. J. Moon; T. Mori; M. Mrvar; M. Nakao; N. K. Nisar; S. Nishida; S. Ogawa; H. Ono; P. Oskin; P. Pakhlov; G. Pakhlova; S. Pardi; H. Park; S. Patra; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; T. Podobnik; E. Prencipe; M. T. Prim; A. Rostomyan; N. Rout; G. Russo; D. Sahoo; Y. Sakai; S. Sandilya; A. Sangal; T. Sanuki; V. Savinov; G. Schnell; C. Schwanda; A. J. Schwartz; B. Schwenker; Y. Seino; K. Senyo; M. E. Sevior; M. Shapkin; J. G. Shiu; B. Shwartz; A. Sokolov; E. Solovieva; M. Starič; Z. S. Stottler; J. F. Strube; T. Sumiyoshi; W. Sutcliffe; M. Takizawa; K. Tanida; F. Tenchini; M. Uchida; T. Uglov; S. Uno; P. Urquijo; S. E. Vahsen; R. Van Tonder; G. Varner; K. E. Varvell; C. H. Wang; E. Wang; M. Z. Wang; P. Wang; X. L. Wang; M. Watanabe; E. Won; X. Xu; W. Yan; S. B. Yang; H. Ye; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhukova

doi:10.1103/PhysRevD.103.112001

Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle

C. Beleño, A. Frey, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, P. Behera, J. Bennett, F. Bernlochner, V. Bhardwaj, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, D. ČervenkovP. Chang, A. Chen, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, F. Di Capua, J. Dingfelder, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, Y. Guan, O. Hartbrich, K. Hayasaka, H. Hayashii, W. S. Hou, K. Inami, A. Ishikawa, M. Iwasaki, W. W. Jacobs, H. B. Jeon, Y. Jin, K. K. Joo, C. Kiesling, B. H. Kim, D. Y. Kim, K. H. Kim, S. H. Kim, Y. K. Kim, T. D. Kimmel, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, K. Lalwani, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, T. Luo, J. Macnaughton, C. Macqueen, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, G. B. Mohanty, T. J. Moon, T. Mori, M. Mrvar, M. Nakao, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, S. Pardi, H. Park, S. Patra, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, E. Prencipe, M. T. Prim, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, A. Sangal, T. Sanuki, V. Savinov, G. Schnell, C. Schwanda, A. J. Schwartz, B. Schwenker, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, J. G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, M. Starič, Z. S. Stottler, J. F. Strube, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, S. Uno, P. Urquijo, S. E. Vahsen, R. Van Tonder, G. Varner, K. E. Varvell, C. H. Wang, E. Wang, M. Z. Wang, P. Wang, X. L. Wang, M. Watanabe, E. Won, X. Xu, W. Yan, S. B. Yang, H. Ye, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova

Department of Physics

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We present an analysis of the exclusive B+→π+π-ℓ+νℓ decay, where ℓ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The study exploits the full ϒ(4S) data sample collected by the Belle detector, corresponding to 711 fb-1 of integrated luminosity. Events are selected by fully reconstructing one B meson in hadronic decay modes, subsequently determining the properties of the other B meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of B(B+→π+π-ℓ+νℓ)=[22.7-1.6+1.9(stat)±3.5(syst)]×10-5, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay.

Original language	English
Article number	112001
Journal	Physical Review D
Volume	103
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.103.112001
Publication status	Published - 2021 Jun 1

Bibliographical note

Publisher Copyright:
© 2021 authors. Published by the American Physical Society.

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.103.112001

Cite this

Beleño, C., Frey, A., Adachi, I., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Behera, P., Bennett, J., Bernlochner, F., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., ... Zhukova, V. (2021). Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle. Physical Review D, 103(11), Article 112001. https://doi.org/10.1103/PhysRevD.103.112001

Beleño, C, Frey, A, Adachi, I, Aihara, H, Asner, DM, Atmacan, H, Aushev, T, Ayad, R, Behera, P, Bennett, J, Bernlochner, F, Bhardwaj, V, Bilka, T, Biswal, J, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Campajola, M, Červenkov, D, Chang, P, Chen, A, Chilikin, K, Cho, K, Choi, Y, Cinabro, D, Cunliffe, S, Dash, N, Di Capua, F, Dingfelder, J, DoleŽal, Z, Dong, TV, Eidelman, S, Epifanov, D, Fast, JE, Ferber, T, Fulsom, BG, Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Giri, A, Goldenzweig, P, Guan, Y, Hartbrich, O, Hayasaka, K, Hayashii, H, Hou, WS, Inami, K, Ishikawa, A, Iwasaki, M, Jacobs, WW, Jeon, HB, Jin, Y, Joo, KK, Kiesling, C, Kim, BH, Kim, DY, Kim, KH, Kim, SH, Kim, YK, Kimmel, TD, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, KriŽan, P, Kroeger, R, Krokovny, P, Kuhr, T, Kulasiri, R, Kumar, R, Kuzmin, A, Kwon, YJ, Lalwani, K, Lee, SC, Li, LK, Li, YB, Li Gioi, L, Libby, J, Lieret, K, Liventsev, D, Luo, T, Macnaughton, J, Macqueen, C, Masuda, M, Matsuda, T, Merola, M, Miyabayashi, K, Mohanty, GB, Moon, TJ, Mori, T, Mrvar, M, Nakao, M, Nisar, NK, Nishida, S, Ogawa, S, Ono, H, Oskin, P, Pakhlov, P, Pakhlova, G, Pardi, S, Park, H, Patra, S, Pedlar, TK, Pestotnik, R, Piilonen, LE, Podobnik, T, Prencipe, E, Prim, MT, Rostomyan, A, Rout, N, Russo, G, Sahoo, D, Sakai, Y, Sandilya, S, Sangal, A, Sanuki, T, Savinov, V, Schnell, G, Schwanda, C, Schwartz, AJ, Schwenker, B, Seino, Y, Senyo, K, Sevior, ME, Shapkin, M, Shiu, JG, Shwartz, B, Sokolov, A, Solovieva, E, Starič, M, Stottler, ZS, Strube, JF, Sumiyoshi, T, Sutcliffe, W, Takizawa, M, Tanida, K, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Urquijo, P, Vahsen, SE, Van Tonder, R, Varner, G, Varvell, KE, Wang, CH, Wang, E, Wang, MZ, Wang, P, Wang, XL, Watanabe, M, Won, E, Xu, X, Yan, W, Yang, SB, Ye, H, Yusa, Y, Zhang, ZP, Zhilich, V & Zhukova, V 2021, 'Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle', Physical Review D, vol. 103, no. 11, 112001. https://doi.org/10.1103/PhysRevD.103.112001

@article{2052ffe5af124d94945bdda28241b257,

title = "Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle",

abstract = "We present an analysis of the exclusive B+→π+π-ℓ+νℓ decay, where ℓ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The study exploits the full ϒ(4S) data sample collected by the Belle detector, corresponding to 711 fb-1 of integrated luminosity. Events are selected by fully reconstructing one B meson in hadronic decay modes, subsequently determining the properties of the other B meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of B(B+→π+π-ℓ+νℓ)=[22.7-1.6+1.9(stat)±3.5(syst)]×10-5, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay.",

author = "C. Bele{\~n}o and A. Frey and I. Adachi and H. Aihara and Asner, {D. M.} and H. Atmacan and T. Aushev and R. Ayad and P. Behera and J. Bennett and F. Bernlochner and V. Bhardwaj and T. Bilka and J. Biswal and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and M. Campajola and D. {\v C}ervenkov and P. Chang and A. Chen and K. Chilikin and K. Cho and Y. Choi and D. Cinabro and S. Cunliffe and N. Dash and {Di Capua}, F. and J. Dingfelder and Z. Dole{\v Z}al and Dong, {T. V.} and S. Eidelman and D. Epifanov and Fast, {J. E.} and T. Ferber and Fulsom, {B. G.} and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and A. Giri and P. Goldenzweig and Y. Guan and O. Hartbrich and K. Hayasaka and H. Hayashii and Hou, {W. S.} and K. Inami and A. Ishikawa and M. Iwasaki and Jacobs, {W. W.} and Jeon, {H. B.} and Y. Jin and Joo, {K. K.} and C. Kiesling and Kim, {B. H.} and Kim, {D. Y.} and Kim, {K. H.} and Kim, {S. H.} and Kim, {Y. K.} and Kimmel, {T. D.} and K. Kinoshita and P. Kody{\v s} and S. Korpar and D. Kotchetkov and P. Kri{\v Z}an and R. Kroeger and P. Krokovny and T. Kuhr and R. Kulasiri and R. Kumar and A. Kuzmin and Kwon, {Y. J.} and K. Lalwani and Lee, {S. C.} and Li, {L. K.} and Li, {Y. B.} and {Li Gioi}, L. and J. Libby and K. Lieret and D. Liventsev and T. Luo and J. Macnaughton and C. Macqueen and M. Masuda and T. Matsuda and M. Merola and K. Miyabayashi and Mohanty, {G. B.} and Moon, {T. J.} and T. Mori and M. Mrvar and M. Nakao and Nisar, {N. K.} and S. Nishida and S. Ogawa and H. Ono and P. Oskin and P. Pakhlov and G. Pakhlova and S. Pardi and H. Park and S. Patra and Pedlar, {T. K.} and R. Pestotnik and Piilonen, {L. E.} and T. Podobnik and E. Prencipe and Prim, {M. T.} and A. Rostomyan and N. Rout and G. Russo and D. Sahoo and Y. Sakai and S. Sandilya and A. Sangal and T. Sanuki and V. Savinov and G. Schnell and C. Schwanda and Schwartz, {A. J.} and B. Schwenker and Y. Seino and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shiu, {J. G.} and B. Shwartz and A. Sokolov and E. Solovieva and M. Stari{\v c} and Stottler, {Z. S.} and Strube, {J. F.} and T. Sumiyoshi and W. Sutcliffe and M. Takizawa and K. Tanida and F. Tenchini and M. Uchida and T. Uglov and S. Uno and P. Urquijo and Vahsen, {S. E.} and {Van Tonder}, R. and G. Varner and Varvell, {K. E.} and Wang, {C. H.} and E. Wang and Wang, {M. Z.} and P. Wang and Wang, {X. L.} and M. Watanabe and E. Won and X. Xu and W. Yan and Yang, {S. B.} and H. Ye and Y. Yusa and Zhang, {Z. P.} and V. Zhilich and V. Zhukova",

note = "Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",

year = "2021",

month = jun,

day = "1",

doi = "10.1103/PhysRevD.103.112001",

language = "English",

volume = "103",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle

AU - Beleño, C.

AU - Frey, A.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aushev, T.

AU - Ayad, R.

AU - Behera, P.

AU - Bennett, J.

AU - Bernlochner, F.

AU - Bhardwaj, V.

AU - Bilka, T.

AU - Biswal, J.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, P.

AU - Chen, A.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - Di Capua, F.

AU - Dingfelder, J.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Guan, Y.

AU - Hartbrich, O.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hou, W. S.

AU - Inami, K.

AU - Ishikawa, A.

AU - Iwasaki, M.

AU - Jacobs, W. W.

AU - Jeon, H. B.

AU - Jin, Y.

AU - Joo, K. K.

AU - Kiesling, C.

AU - Kim, B. H.

AU - Kim, D. Y.

AU - Kim, K. H.

AU - Kim, S. H.

AU - Kim, Y. K.

AU - Kimmel, T. D.

AU - Kinoshita, K.

AU - Kodyš, P.

AU - Korpar, S.

AU - Kotchetkov, D.

AU - KriŽan, P.

AU - Kroeger, R.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kulasiri, R.

AU - Kumar, R.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lalwani, K.

AU - Lee, S. C.

AU - Li, L. K.

AU - Li, Y. B.

AU - Li Gioi, L.

AU - Libby, J.

AU - Lieret, K.

AU - Liventsev, D.

AU - Luo, T.

AU - Macnaughton, J.

AU - Macqueen, C.

AU - Masuda, M.

AU - Matsuda, T.

AU - Merola, M.

AU - Miyabayashi, K.

AU - Mohanty, G. B.

AU - Moon, T. J.

AU - Mori, T.

AU - Mrvar, M.

AU - Nakao, M.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Ogawa, S.

AU - Ono, H.

AU - Oskin, P.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Pardi, S.

AU - Park, H.

AU - Patra, S.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Podobnik, T.

AU - Prencipe, E.

AU - Prim, M. T.

AU - Rostomyan, A.

AU - Rout, N.

AU - Russo, G.

AU - Sahoo, D.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Sangal, A.

AU - Sanuki, T.

AU - Savinov, V.

AU - Schnell, G.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Schwenker, B.

AU - Seino, Y.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Stottler, Z. S.

AU - Strube, J. F.

AU - Sumiyoshi, T.

AU - Sutcliffe, W.

AU - Takizawa, M.

AU - Tanida, K.

AU - Tenchini, F.

AU - Uchida, M.

AU - Uglov, T.

AU - Uno, S.

AU - Urquijo, P.

AU - Vahsen, S. E.

AU - Van Tonder, R.

AU - Varner, G.

AU - Varvell, K. E.

AU - Wang, C. H.

AU - Wang, E.

AU - Wang, M. Z.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, M.

AU - Won, E.

AU - Xu, X.

AU - Yan, W.

AU - Yang, S. B.

AU - Ye, H.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhukova, V.

PY - 2021/6/1

Y1 - 2021/6/1

N2 - We present an analysis of the exclusive B+→π+π-ℓ+νℓ decay, where ℓ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The study exploits the full ϒ(4S) data sample collected by the Belle detector, corresponding to 711 fb-1 of integrated luminosity. Events are selected by fully reconstructing one B meson in hadronic decay modes, subsequently determining the properties of the other B meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of B(B+→π+π-ℓ+νℓ)=[22.7-1.6+1.9(stat)±3.5(syst)]×10-5, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay.

AB - We present an analysis of the exclusive B+→π+π-ℓ+νℓ decay, where ℓ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The study exploits the full ϒ(4S) data sample collected by the Belle detector, corresponding to 711 fb-1 of integrated luminosity. Events are selected by fully reconstructing one B meson in hadronic decay modes, subsequently determining the properties of the other B meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of B(B+→π+π-ℓ+νℓ)=[22.7-1.6+1.9(stat)±3.5(syst)]×10-5, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay.

UR - http://www.scopus.com/inward/record.url?scp=85108893900&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.103.112001

DO - 10.1103/PhysRevD.103.112001

M3 - Article

AN - SCOPUS:85108893900

SN - 2470-0010

VL - 103

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112001

ER -

Measurement of the branching fraction of the decay B+ →π+π-ℓ+νℓ in fully reconstructed events at Belle

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