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

The Belle Collaboration,; 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.; 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, T.V.; Eidelman, S.; Epifanov, D.; Fast, J.E.; Ferber, T.; Fulsom, B.G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Guan, Y.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hou, W.-S.; Inami, K.; Ishikawa, A.; Iwasaki, M.; Jacobs, W.W.; Jeon, H.B.; Jin, Y.; Joo, K.K.; Kiesling, C.; Kim, B.H.; Kim, D.Y.; Kim, K.-H.; Kim, S.H.; Kim, Y.-K.; Kimmel, T.D.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kumar, R.; Kuzmin, A.; Kwon, Y.-J.; Lalwani, K.; Lee, S.C.; Li, L.K.; Li, Y.B.; Li Gioi, L.; Libby, J.; Lieret, K.; Liventsev, D.; Luo, T.; MacNaughton, J.; MacQueen, C.; Masuda, M.; Matsuda, T.; Merola, M.; Miyabayashi, K.; Mohanty, G.B.; Moon, T.J.; Mori, T.; Mrvar, M.; Nakao, M.; Nisar, N.K.; Nishida, S.; Ogawa, S.; Ono, H.; Pakhlov, P.Oskin P.; Pakhlova, G.; Pardi, S.; Park, H.; Patra, S.; Pedlar, T.K.; Pestotnik, R.; Piilonen, L.E.; Podobnik, T.; Prencipe, E.; Prim, M.T.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sangal, A.; Sanuki, T.; Savinov, V.; Schnell, G.; Schwanda, C.; Schwartz, A.J.; Schwenker, B.; Seino, Y.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shiu, J.-G.; Shwartz, B.; Sokolov, A.; Solovieva, E.; Starič, M.; Stottler, Z.S.; Strube, J.F.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Uno, S.; Urquijo, P.; Vahsen, S.E.; Van Tonder, R.; Varner, G.; Varvell, K.E.; Wang, C.H.; Wang, E.; Wang, M.-Z.; Wang, P.; Wang, X.L.; Watanabe, M.; Won, E.; Xu, X.; Yan, W.; Yang, S.B.; Ye, H.; Yusa, Y.; Zhang, Z.P.; Zhilich, V.; Zhukova, V.

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

The Belle Collaboration, Beleño, C., Frey, A., Adachi, I., Aihara, H., Asner, D., et al. (2021). Measurement of the branching ratio of the decay B+→π+π−ℓ+νℓ in fully reconstructed events at Belle. Physical Review D, 103, 112001. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-378.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000A-1A4E-3 Version Permalink: https://hdl.handle.net/21.11116/0000-000A-1A4F-2

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The Belle Collaboration¹, Author
Beleño, C.¹, Author
Frey, A.¹, Author
Adachi, I.¹, Author
Aihara, H.¹, Author
Asner, D.M.¹, Author
Atmacan, H.¹, Author
Aushev, T.¹, Author
Ayad, R.¹, Author
Behera, P.¹, Author
Bennett, J.¹, Author
Bernlochner, F.¹, Author
Bhardwaj, V.¹, Author
Bilka, T.¹, Author
Biswal, J.¹, Author
Bonvicini, G.¹, Author
Bozek, A.¹, Author
Bračko, M.¹, Author
Browder, T.E.¹, Author
Campajola, M.¹, Author
Červenkov, D.¹, AuthorChang, P.¹, AuthorChen, A.¹, AuthorChilikin, K.¹, AuthorCho, K.¹, AuthorChoi, Y.¹, AuthorCinabro, D.¹, AuthorCunliffe, S.¹, AuthorDash, N.¹, AuthorDi Capua, F.¹, AuthorDingfelder, J.¹, AuthorDoležal, Z.¹, AuthorDong, T.V.¹, AuthorEidelman, S.¹, AuthorEpifanov, D.¹, AuthorFast, J.E.¹, AuthorFerber, T.¹, AuthorFulsom, B.G.¹, AuthorGarg, R.¹, AuthorGaur, V.¹, AuthorGabyshev, N.¹, AuthorGarmash, A.¹, AuthorGiri, A.¹, AuthorGoldenzweig, P.¹, AuthorGuan, Y.¹, AuthorHartbrich, O.¹, AuthorHayasaka, K.¹, AuthorHayashii, H.¹, AuthorHou, W.-S.¹, AuthorInami, K.¹, AuthorIshikawa, A.¹, AuthorIwasaki, M.¹, AuthorJacobs, W.W.¹, AuthorJeon, H.B.¹, AuthorJin, Y.¹, AuthorJoo, K.K.¹, AuthorKiesling, C.¹, AuthorKim, B.H.¹, AuthorKim, D.Y.¹, AuthorKim, K.-H.¹, AuthorKim, S.H.¹, AuthorKim, Y.-K.¹, AuthorKimmel, T.D.¹, AuthorKinoshita, K.¹, AuthorKodyš, P.¹, AuthorKorpar, S.¹, AuthorKotchetkov, D.¹, AuthorKrižan, P.¹, AuthorKroeger, R.¹, AuthorKrokovny, P.¹, AuthorKuhr, T.¹, AuthorKulasiri, R.¹, AuthorKumar, R.¹, AuthorKuzmin, A.¹, AuthorKwon, Y.-J.¹, AuthorLalwani, K.¹, AuthorLee, S.C.¹, AuthorLi, L.K.¹, AuthorLi, Y.B.¹, AuthorLi Gioi, L.¹, AuthorLibby, J.¹, AuthorLieret, K.¹, AuthorLiventsev, D.¹, AuthorLuo, T.¹, AuthorMacNaughton, J.¹, AuthorMacQueen, C.¹, AuthorMasuda, M.¹, AuthorMatsuda, T.¹, AuthorMerola, M.¹, AuthorMiyabayashi, K.¹, AuthorMohanty, G.B.¹, AuthorMoon, T.J.¹, AuthorMori, T.¹, AuthorMrvar, M.¹, AuthorNakao, M.¹, AuthorNisar, N.K.¹, AuthorNishida, S.¹, AuthorOgawa, S.¹, AuthorOno, H.¹, AuthorPakhlov, P.Oskin P.¹, AuthorPakhlova, G.¹, AuthorPardi, S.¹, AuthorPark, H.¹, AuthorPatra, S.¹, AuthorPedlar, T.K.¹, AuthorPestotnik, R.¹, AuthorPiilonen, L.E.¹, AuthorPodobnik, T.¹, AuthorPrencipe, E.¹, AuthorPrim, M.T.¹, AuthorRostomyan, A.¹, AuthorRout, N.¹, AuthorRusso, G.¹, AuthorSahoo, D.¹, AuthorSakai, Y.¹, AuthorSandilya, S.¹, AuthorSangal, A.¹, AuthorSanuki, T.¹, AuthorSavinov, V.¹, AuthorSchnell, G.¹, AuthorSchwanda, C.¹, AuthorSchwartz, A.J.¹, AuthorSchwenker, B.¹, AuthorSeino, Y.¹, AuthorSenyo, K.¹, AuthorSevior, M.E.¹, AuthorShapkin, M.¹, AuthorShiu, J.-G.¹, AuthorShwartz, B.¹, AuthorSokolov, A.¹, AuthorSolovieva, E.¹, AuthorStarič, M.¹, AuthorStottler, Z.S.¹, AuthorStrube, J.F.¹, AuthorSumiyoshi, T.¹, AuthorSutcliffe, W.¹, AuthorTakizawa, M.¹, AuthorTanida, K.¹, AuthorTenchini, F.¹, AuthorUchida, M.¹, AuthorUglov, T.¹, AuthorUno, S.¹, AuthorUrquijo, P.¹, AuthorVahsen, S.E.¹, AuthorVan Tonder, R.¹, AuthorVarner, G.¹, AuthorVarvell, K.E.¹, AuthorWang, C.H.¹, AuthorWang, E.¹, AuthorWang, M.-Z.¹, AuthorWang, P.¹, AuthorWang, X.L.¹, AuthorWatanabe, M.¹, AuthorWon, E.¹, AuthorXu, X.¹, AuthorYan, W.¹, AuthorYang, S.B.¹, AuthorYe, H.¹, AuthorYusa, Y.¹, AuthorZhang, Z.P.¹, AuthorZhilich, V.¹, AuthorZhukova, V.¹, Author more..

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1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650

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Abstract: We present an analysis of the exclusive $B^{+}\to\pi^{+}\pi^{-}\ell^{+}\nu_{\ell}$ decay, where $\ell$ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The analysis uses the full $\Upsilon(4S)$ data sample collected by the Belle detector, corresponding to 711 fb$^{-1}$ of integrated luminosity. We select the events 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 ${{\cal B}(B^{+}\to \pi^{+}\pi^{-}\ell^{+}\nu_{\ell})= [22.7 ^{+1.9}_{-1.6} (\mathrm{stat}) \pm 3.4(\mathrm{syst}) ]\times 10^{-5}}$, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay.

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Dates: Date issued: 2021

Publication Status: Issued

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Identifiers: Other: MPP-2020-378
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-378
arXiv: arxiv:2005.07766
URI: https://inspirehep.net/literature?q=find%20eprint%202005.07766

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Title: Physical Review D

Abbreviation : Phys.Rev.D

Source Genre: Journal

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Pages: - Volume / Issue: 103 Sequence Number: - Start / End Page: 112001 Identifier: -