Search for B^{-}→μ^{-}ν[over ¯]_{μ} Decays at the Belle Experiment.

A Sibidanov, K E Varvell,I Adachi,H Aihara,S Al Said,D M Asner,T Aushev,R Ayad,V Babu,I Badhrees,S Bahinipati,A M Bakich,V Bansal,E Barberio,P Behera,B Bhuyan,J Biswal,A Bozek,M Bračko,T E Browder, D Červenkov,P Chang,V Chekelian,A Chen, B G Cheon, K Chilikin,K Cho,S-K Choi,Y Choi,D Cinabro, T Czank,N Dash,S Di Carlo,Z Doležal, Z Drásal,D Dutta,S Eidelman,D Epifanov,J E Fast, T Ferber, B G Fulsom,V Gaur,N Gabyshev,A Garmash, P Goldenzweig,D Greenwald,Y Guan,E Guido,J Haba, K Hayasaka, H Hayashii,M T Hedges, S Hirose,W-S Hou,C-L Hsu, T Iijima,K Inami, G Inguglia,A Ishikawa,R Itoh,M Iwasaki, Y Iwasaki,W W Jacobs, I Jaegle,H B Jeon, Y Jin,K K Joo,T Julius,J Kahn,A B Kaliyar,K H Kang, G Karyan, T Kawasaki, C Kiesling, D Y Kim,J B Kim,S H Kim, Y J Kim,K Kinoshita, P Kodyš, S Korpar, D Kotchetkov, P Križan,P Krokovny,T Kuhr,R Kulasiri, R Kumar,A Kuzmin,Y-J Kwon, J S Lange, I S Lee, C H Li, L Li, L Li Gioi,J Libby,D Liventsev, M Lubej,T Luo, M Masuda,T Matsuda,M Merola,K Miyabayashi,H Miyata, R Mizuk, G B Mohanty, H K Moon, T Mori, R Mussa, E Nakano, M Nakao,T Nanut,K J Nath,Z Natkaniec,M Nayak,M Niiyama,N K Nisar,S Nishida,S Ogawa, S Okuno,H Ono,P Pakhlov,G Pakhlova, B Pal,C-S Park,C W Park,H Park,S Paul,T K Pedlar, R Pestotnik, L E Piilonen,M Ritter, A Rostomyan, M Rozanska, Y Sakai,M Salehi, S Sandilya,Y Sato, V Savinov,O Schneider, G Schnell, C Schwanda, Y Seino,K Senyo, M E Sevior, V Shebalin, C P Shen,T-A Shibata,J-G Shiu,F Simon,A Sokolov, E Solovieva, M Starič, J F Strube, J Stypula, M Sumihama, K Sumisawa, T Sumiyoshi,M Takizawa,U Tamponi,K Tanida, F Tenchini, K Trabelsi,M Uchida, S Uehara,T Uglov, Y Unno,S Uno, P Urquijo,C Van Hulse, G Varner,V Vorobyev,C H Wang,M-Z Wang,P Wang,M Watanabe,S Watanuki, E Widmann, E Won,Y Yamashita,H Ye,J Yelton, C Z Yuan,Y Yusa, Z P Zhang,V Zhilich,V Zhukova,V Zhulanov, A Zupanc

PHYSICAL REVIEW LETTERS（2018）

Cited 18|Views84

No score

Abstract

We report the results of a search for the rare, purely leptonic decay B- -> mu(-)(nu) over bar (mu) performed with a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, collected near the Upsilon(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- -> mu(-)(nu) over bar (mu)) = (6.46 +/- 2.22 +/- 1.60) x 10(-7) or a frequentist 90% confidence level interval on the B- -> mu(-)(nu) over bar (mu) branching fraction of [2.9, 10.7] x 10(-7).

Translated text

Key words

belle experiment,decays

AI Read Science

Must-Reading Tree

Example

Generate MRT to find the research sequence of this paper

Chat Paper

Summary is being generated by the instructions you defined