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Title: Search for B- ??- ? ? Decays at the Belle Experiment
Authors: Sibidanov A.
Varvell K.E.
Adachi I.
Aihara H.
Al Said S.
Asner D.M.
Aushev T.
Ayad R.
Babu V.
Badhrees I.
Bahinipati S.
Bakich A.M.
Bansal V.
Barberio E.
Behera P.
Bhuyan B.
Biswal J.
Bozek A.
Bra?ko M.
Browder T.E.
?ervenkov D.
Chang P.
Chekelian V.
Chen A.
Cheon B.G.
Chilikin K.
Cho K.
Choi S.-K.
Choi Y.
Cinabro D.
Czank T.
Dash N.
Di Carlo S.
Dole�al Z.
Dr�sal Z.
Dutta D.
Eidelman S.
Epifanov D.
Fast J.E.
Ferber T.
Fulsom B.G.
Gaur V.
Gabyshev N.
Garmash A.
Goldenzweig P.
Greenwald D.
Guan Y.
Guido E.
Haba J.
Hayasaka K.
Hayashii H.
Hedges M.T.
Hirose S.
Hou W.-S.
Hsu C.-L.
Iijima T.
Inami K.
Inguglia G.
Ishikawa A.
Itoh R.
Iwasaki M.
Iwasaki Y.
Jacobs W.W.
Jaegle I.
Jeon H.B.
Jin Y.
Joo K.K.
Julius T.
Kahn J.
Kaliyar A.B.
Kang K.H.
Karyan G.
Kawasaki T.
Kiesling C.
Kim D.Y.
Kim J.B.
Kim S.H.
Kim Y.J.
Kinoshita K.
Kody� P.
Korpar S.
Kotchetkov D.
Kri�an P.
Krokovny P.
Kuhr T.
Kulasiri R.
Kumar R.
Kuzmin A.
Kwon Y.-J.
Lange J.S.
Lee I.S.
Li C.H.
Li L.
Li Gioi L.
Libby J.
Liventsev D.
Lubej M.
Luo T.
Masuda M.
Matsuda T.
Merola M.
Miyabayashi K.
Miyata H.
Mizuk R.
Mohanty G.B.
Moon H.K.
Mori T.
Mussa R.
Nakano E.
Nakao M.
Nanut T.
Nath K.J.
Natkaniec Z.
Nayak M.
Niiyama M.
Nisar N.K.
Nishida S.
Ogawa S.
Okuno S.
Ono H.
Pakhlov P.
Pakhlova G.
Pal B.
Park C.-S.
Park C.W.
Park H.
Paul S.
Pedlar T.K.
Pestotnik R.
Piilonen L.E.
Ritter M.
Rostomyan A.
Rozanska M.
Sakai Y.
Salehi M.
Sandilya S.
Sato Y.
Savinov V.
Schneider O.
Schnell G.
Schwanda C.
Seino Y.
Senyo K.
Sevior M.E.
Shebalin V.
Shen C.P.
Shibata T.-A.
Shiu J.-G.
Simon F.
Sokolov A.
Solovieva E.
Stari? M.
Strube J.F.
Stypula J.
Sumihama M.
Sumisawa K.
Sumiyoshi T.
Takizawa M.
Tamponi U.
Tanida K.
Tenchini F.
Trabelsi K.
Uchida M.
Uehara S.
Uglov T.
Unno Y.
Uno S.
Urquijo P.
Van Hulse C.
Varner G.
Vorobyev V.
Wang C.H.
Wang M.-Z.
Wang P.
Watanabe M.
Watanuki S.
Widmann E.
Won E.
Yamashita Y.
Ye H.
Yelton J.
Yuan C.Z.
Yusa Y.
Zhang Z.P.
Zhilich V.
Zhukova V.
Zhulanov V.
Zupanc A.
The Belle Collaboration
Issue Date: 2018
Citation: 13
Abstract: We report the results of a search for the rare, purely leptonic decay B-??-? ? performed with a 711 fb-1 data sample that contains 772�106 BB pairs, collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B-??-??)=(6.46�2.22�1.60)�10-7 or a frequentist 90% confidence level interval on the B-??-? ? branching fraction of [2.9,10.7]�10-7. � 2018 authors. Published by the American Physical Society.
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