Observation of the B ^sub s^^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ K ^sup ±^ [pi] ^sup ^ decay

Abstract Decays of the form B ^sub (s)^^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ h ^sup +^ h ^sup (')-^(h ^sup (')^= K,[pi]) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb^sup -1^ recorded with the LHCb detector. The first observation...

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Veröffentlicht in:	The journal of high energy physics 2014-07, Vol.2014 (7), p.1
Hauptverfasser:	Adeva, B, Ali, S, Amerio, S, Amhis, Y, Archilli, F, Artamonov, A, Badalov, A, Balagura, V, Bifani, S, Bird, T, Bocci, V, van den Brand, J, Campana, P, Charpentier, Ph, Ciezarek, G, Coco, V, Dordei, F, Eisenhardt, S, Ekelhof, R, Eklund, L, Ely, S, Färber, C, Filippov, S, Firlej, M, Fitzpatrick, C, Fiutowski, T, Francisco, O, Frei, C, Torreira, A Gallas, Tico, J Garra, Gaspar, C, Gersabeck, E, Giani', S, Gotti, C, Diaz, R Graciani, Grünberg, O, Haefeli, G, Haines, S C, Harnew, S T, He, J, Hunt, P, Jacobsson, R, Jalocha, J, Johnson, D, Kaballo, M, Kenyon, I R, Korolev, M, Kruse, F, Kudryavtsev, V, Kurek, K, Lambert, D, Langenbruch, C, Lees, J-p, Liles, M, Lopes, J H, Lopez-march, N, Luo, H, Malde, S, Marconi, U, Vidal, F Martinez, Mathe, Z, Moron, J, Neuner, M, Palano, A, Panman, J, Parkinson, C J, Alvarez, A Pazos, Pesen, E, Olloqui, E Picatoste, Popovici, B, Molina, V Rives, Vidal, A Romero, Saitta, B, Sedes, B Sanmartin, Sapunov, M, Satriano, C, Sciubba, A, Semennikov, A, Shapoval, I, Shears, T, Skidmore, N, Skwarnicki, T, Steinkamp, O, Stevenson, S, Straticiuc, M, Straumann, U, Szczekowski, M, Tonelli, D, Tournefier, E, Tran, M T, Ukleja, A, Gomez, R Vazquez, Veneziano, G, Vilasis-cardona, X, Wallace, C, Williams, M P, Witek, M, Wu, S, Yang, Z, Zhelezov, A
Format:	Artikel
Sprache:	eng
Schlagworte:	High energy physics
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Zusammenfassung:	Abstract Decays of the form B ^sub (s)^^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ h ^sup +^ h ^sup (')-^(h ^sup (')^= K,[pi]) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb^sup -1^ recorded with the LHCb detector. The first observation of the B ^sub s^^sup 0^ [arrow right]J/[psi]K ^sub S^^sup 0^ K ^sup ±^ [pi] ^sup ^ decay is reported, with significance in excess of 10 standard deviations. The B ^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ K ^sup +^ K ^sup -^ decay is also observed for the first time. The branching fraction of B ^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ [pi] ^sup +^ [pi] ^sup -^ is determined, to significantly better precision than previous measurements, using B ^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ as a normalisation channel. Branching fractions and upper limits of the other B ^sub (s)^^sup 0^ [arrow right]J/[psi]K ^sub S^^sup 0^ h ^sup +^ h ^sup (')-^ modes are determined relative to that of the B ^sup 0^[arrow right]J/[psi]K ^sub S^^sup 0^ [pi] ^sup +^ [pi] ^sup -^ decay. [Figure not available: see fulltext.]
ISSN:	1029-8479
DOI:	10.1007/JHEP07(2014)140