Measurements of branching fraction and direct $CP$ asymmetry in $B^{\pm}\to K^{0}_{S}K^{0}_{S}K^{\pm}$ and a search for $B^{\pm}\to K^{0}_{S}K^{0}_{S}\pi^{\pm}$

A.B. Kaliyar , P. Behera , G.B. Mohanty , V. Gaur , I. Adachi , J.K. Ahn , H. Aihara , S. Al Said , D.M. Asner , V. Aulchenko , T. Aushev , R. Ayad , V. Babu , I. Badhrees , S. Bahinipati , A.M. Bakich , V. Bansal , C. Beleño , V. Bhardwaj , T. Bilka , J. Biswal , A. Bobrov , A. Bozek , M. Bračko , L. Cao , D. Červenkov , V. Chekelian , A. Chen , B.G. Cheon , K. Chilikin , H.E. Cho , K. Cho , S.-K. Choi , Y. Choi , S. Choudhury , D. Cinabro , S. Cunliffe , N. Dash , S. Di Carlo (1) , J. Dingfelder , Z. Doležal , T.V. Dong , Z. Drásal , S. Eidelman , D. Epifanov , J.E. Fast , T. Ferber , A. Frey , B.G. Fulsom , R. Garg , N. Gabyshev , A. Garmash , M. Gelb , A. Giri , P. Goldenzweig , B. Golob , D. Greenwald , O. Grzymkowska , J. Haba , T. Hara , K. Hayasaka , H. Hayashii , W.-S. Hou , C.-L. Hsu , T. Iijima , K. Inami , A. Ishikawa , R. Itoh , M. Iwasaki , Y. Iwasaki , W.W. Jacobs , H.B. Jeon , S. Jia , D. Joffe , K.K. Joo , J. Kahn , G. Karyan , T. Kawasaki , H. Kichimi , C. Kiesling , C.H. Kim , D.Y. Kim , H.J. Kim , S.H. 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 , I.S. Lee , J.K. Lee , J.Y. Lee , S.C. Lee , D. Levit , C.H. Li , L.K. Li , Y.B. Li , L. Li Gioi , J. Libby , T. Luo , J. Macnaughton , T. Matsuda , D. Matvienko , M. Merola , K. Miyabayashi , H. Miyata , R. Mizuk , S. Mohanty , T. Mori , M. Nakao , K.J. Nath , Z. Natkaniec , M. Nayak , N.K. Nisar , S. Nishida , K. Nishimura , K. Ogawa , S. Ogawa , H. Ono , Y. Onuki , W. Ostrowicz , G. Pakhlova , B. Pal , S. Pardi , S. Patra , S. Paul , T.K. Pedlar , R. Pestotnik , L.E. Piilonen , V. Popov , K. Prasanth , E. Prencipe , A. Rabusov , P.K. Resmi , M. Ritter , A. Rostomyan , G. Russo , D. Sahoo , Y. Sakai , M. Salehi , S. Sandilya , T. Sanuki , V. Savinov , O. Schneider , G. Schnell , J. Schueler , C. Schwanda , A.J. Schwartz , Y. Seino , K. Senyo , M.E. Sevior , C.P. Shen , T.-A. Shibata , J.-G. Shiu , F. Simon , E. Solovieva , M. Starič , Z.S. Stottler , M. Sumihama , T. Sumiyoshi , W. Sutcliffe , M. Takizawa , K. Tanida , Y. Tao , F. Tenchini , K. Trabelsi (1) , M. Uchida , T. Uglov , Y. Unno , S. Uno , P. Urquijo , Y. Usov , R. van Tonder , G. Varner , K.E. Varvell , A. Vossen , E. Waheed , B. Wang , C.H. Wang , M.-Z. Wang , P. Wang , X.L. Wang , E. Won , S.B. Yang , H. Ye , J. Yelton , J.H. Yin , Y. Yusa , Z.P. Zhang , V. Zhilich , V. Zhukova

1 LAL - Laboratoire de l'Accélérateur Linéaire

We study charmless hadronic decays of charged B mesons to the final states KS0KS0K± and KS0KS0π± using a 711  fb-1 data sample that contains 772×106 BB¯ pairs and was collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. For B±→KS0KS0K±, the measured branching fraction and direct CP asymmetry are [10.42±0.43(stat)±0.22(syst)]×10-6 and [+1.6±3.9(stat)±0.9(syst)]%, respectively. In the absence of a statistically significant signal for B±→KS0KS0π±, we obtain a 90% confidence-level upper limit on its branching fraction as 8.7×10-7.

Mots clés: electron positron: annihilation; electron positron: colliding beams; B: pair production; B+: branching ratio: measured; B-: branching ratio: measured; branching ratio: upper limit; asymmetry: CP; CP: violation; B+: hadronic decay; B-: hadronic decay; Upsilon(10570): electroproduction; BELLE; KEK-B; experimental results; B+ --> 2K0(S) K+; B- --> 2K0(S) K-; B+ --> 2K0(S) pi+; B- --> 2K0(S) pi-; S041.323; S041.324; S041AY8

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

A.B. Kaliyar, P. Behera, G.B. Mohanty, V. Gaur, I. Adachi, et al.. Measurements of branching fraction and direct $CP$ asymmetry in $B^{\pm}\to K^{0}_{S}K^{0}_{S}K^{\pm}$ and a search for $B^{\pm}\to K^{0}_{S}K^{0}_{S}\pi^{\pm}$. Physical Review D, 2019, 99 (3), pp.031102. ⟨10.1103/PhysRevD.99.031102⟩. ⟨hal-01975380⟩