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Measurements of q2 moments of inclusive B →xcℓ+νℓ decays with hadronic tagging

Authors
Van, Tonder R.Cao, L.Sutcliffe, W.Welsch, M.Bernlochner, F.U.Adachi, I.Aihara, H.Asner, D.M.Aushev, T.Ayad, R.Babu, V.Behera, P.Belous, K.Bennett, J.Bessner, M.Bhardwaj, V.Bhuyan, B.Bilka, T.Biswal, J.Bobrov, A.Bodrov, D.Borah, J.Bozek, A.Bračko, M.Branchini, P.Budano, A.Campajola, M.Červenkov, D.Chang, M.-C.Chang, P.Chekelian, V.Chen, A.Cheon, Byung GuChilikin, K.Cho, H.E.Cho, K.Cho, S.-J.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Das, S.De, Nardo G.De, Pietro G.Dhamija, R.Di, Capua F.Dingfelder, J.DoleŽal, Z.Dong, T.V.Dubey, S.Epifanov, D.Ferber, T.Fulsom, B.G.Garg, R.Gaur, V.Gabyshev, N.Giri, A.Goldenzweig, P.Graziani, E.Gu, T.Guan, Y.Gudkova, K.Hadjivasiliou, C.Halder, S.Hartbrich, O.Hayasaka, K.Hayashii, H.Hou, W.-S.Hsu, C.-L.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Jacobs, W.W.Jia, S.Jin, Y.Joo, K.K.Kaliyar, A.B.Kang, K.H.Karyan, G.Kichimi, H.Kiesling, C.Kim, C.H.Kim, D.Y.Kim, K.-H.Kim, Y.-K.Kinoshita, K.Kodyš, P.Konno, T.Korpar, S.Kovalenko, E.KriŽan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kumar, M.Kumar, R.Kumara, K.Kuzmin, A.Kwon, Y.-J.Lange, J.S.Laurenza, M.Lee, S.C.Lewis, P.Li, C.H.Li, J.Li, L.K.Li, Y.B.Li, Gioi L.Libby, J.Lieret, K.Liventsev, D.Macqueen, C.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Metzner, F.Miyabayashi, K.Mizuk, R.Mohanty, G.B.Mohanty, S.Mrvar, M.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, L.Nisar, N.K.Nishida, S.Nishimura, K.Ogawa, K.Ogawa, S.Ono, H.Oskin, P.Pakhlov, P.Pakhlova, G.Pang, T.Pardi, S.Park, H.Park, S.-H.Passeri, A.Patra, S.Paul, S.Pedlar, T.K.Pestotnik, R.Piilonen, L.E.Podobnik, T.Popov, V.Prencipe, E.Prim, M.T.Rabusov, A.Röhrken, M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Santelj, L.Savinov, V.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Sevior, M.E.Shapkin, M.Sharma, C.Shen, C.P.Shiu, J.-G.Sokolov, A.Solovieva, E.Starič, M.Stottler, Z.S.Strube, J.F.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Vahsen, S.E.Varner, G.Varvell, K.E.Waheed, E.Wang, C.H.Wang, E.Wang, M.-Z.Wang, P.Wang, X.L.Watanabe, M.Watanuki, S.Yabsley, B.D.Yan, W.Yang, S.B.Ye, H.Yin, J.H.Zhang, Z.P.Zhilich, V.Zhukova, V.
Issue Date
Dec-2021
Publisher
American Physical Society
Citation
Physical Review D, v.104, no.11, pp.1 - 32
Indexed
SCIE
SCOPUS
Journal Title
Physical Review D
Volume
104
Number
11
Start Page
1
End Page
32
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/140087
DOI
10.1103/PhysRevD.104.112011
ISSN
2470-0010
Abstract
We present the measurement of the first to fourth order moments of the four-momentum transfer squared, q2, of inclusive B→Xcℓ+νℓ decays using the full Belle dataset of 711 fb-1 of integrated luminosity at the (4S) resonance where ℓ=e, μ. The determination of these moments and their systematic uncertainties open new pathways to determine the absolute value of the Cabibbo-Kobayashi-Maskawa matrix element Vcb using a reduced set of matrix elements of the heavy quark expansion. In order to identify and reconstruct the Xc system, we reconstruct one of the two B-mesons using machine learning techniques in fully hadronic decay modes. The moments are measured with progressively increasing threshold selections on q2 starting with a lower value of 3.0 GeV2 in steps of 0.5 GeV2 up to a value of 10.0 GeV2. The measured moments are further unfolded, correcting for reconstruction and selection effects as well as QED final state radiation. We report the moments separately for electron and muon final states and observe no lepton flavor universality violating effects.
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