The first observation of the Cabibbo-suppressed decay Λ b → J/ψpπ is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. A prominent signal is observed and the branching fraction relative to the decay mode Λ b → J/ψpK is determined to be B (Λb → J / ψp π-/ B Λ b → J / ψp K- = 0.0824 ± 0.0025 stat ± 0.0042 syst. A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be A CP (Λb → J / ψp π-) - A CP (Λb → J / ψp K-) = + 5.7 ± 2.4 stat ± 1.2 syst %, which is compatible with CP symmetry at the 2.2σ level. [Figure not available: see fulltext.] © 2014 The Author(s).
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2014). Observation of the Λb0 → J/ψ p π- Decay. JOURNAL OF HIGH ENERGY PHYSICS, 2014(7) [10.1007/JHEP07(2014)103].
Observation of the Λb0 → J/ψ p π- Decay
Aaij, R; Adeva, B; Adinolfi, M; Affolder, A; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P; Alves, A; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Anderson, J; Andreassen, R; Andreotti, M; Andrews, J; Appleby, R; Gutierrez, O; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Bǎbeanu, A; Bachmann, S; Back, J; Badalov, A; Balagura, V; Baldini, W; Barlow, R; Barschel, C; Barsuk, S; Barter, W; Batozskaya, V; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Belogurov, S; Belous, K; Belyaev, I; Ben Haim, E; Bencivenni, G; Benson, S; Benton, J; Berezhnoy, A; Bernet, R; Bettler, M; Van Beuzekom, M; Bien, A; Bifani, S; Bird, T; Bizzeti, A; Bjørnstad, P; Blake, T; Blanc, F; Blouw, J; Blusk, S; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borgia, A; Borsato, M ;Bowcock, T; Bowen, E; Bozzi, C; Brambach, T; Van Den Brand, J; Bressieux, J; Brett, D; Britsch, M; Britton, T; Brodzicka, J; Brook, N; Brown, H; Bursche, A; Busetto, G; Buytaert, J; Cadeddu, S; Calabrese, R; CALVI, MARTA ;Gomez, M; Camboni, A; Campana, P; Perez, D; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carranza Mejia, H; Carson, L; Akiba, K; Casse, G; CASSINA, LORENZO ;Garcia, L; Cattaneo, M; Cauet, C; Cenci, R; Charles, M; Charpentier, P; Chen, S; Cheung, S; Chiapolini, N; Chrzaszcz, M; Ciba, K; Vidal, X; Ciezarek, G; Clarke, P; Clemencic, M; Cliff, H; Closier, J; Coco, V; Cogan, J; Cogneras, E; Collins, P; Comerma Montells, A; Contu, A; Cook, A; Coombes, M; Coquereau, S; Corti, G; Corvo, M; Counts, I; Couturier, B; Cowan, G; Craik, D; Torres, M; Cunliffe, S; Currie, R; D'Ambrosio, C; Dalseno, J; David, P; David, P; Davis, A; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J; De Paula, L; De Silva, W; De Simone, P; Decamp, D; Deckenhoff, M; Del Buono, L; Déléage, N; Derkach, D; Deschamps, O; Dettori, F; Di Canto, A; Dijkstra, H; Donleavy, S; Dordei, F; Dorigo, M; Suárez, A; Dossett, D; Dovbnya, A; Dreimanis, K; Dujany, G; Dupertuis, F; Durante, P; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Eisenhardt, S; Eitschberger, U; Ekelhof, R; Eklund, L; El Rifai, I; Elsasser, C; Ely, S; Esen, S; Evans, H; Evans, T; Falabella, A; Färber, C; Farinelli, C; Farley, N; Farry, S; Fay, R; Ferguson, D; Albor, V; Rodrigues, F; Ferro Luzzi, M; Filippov, S; Fiore, M; Fiorini, M; Firlej, M; Fitzpatrick, C; Fiutowski, T; Fontana, M; Fontanelli, F; Forty, R; Francisco, O; Frank, M; Frei, C; Frosini, M; Fu, J; Furfaro, E; Torreira, A; Galli, D; Gallorini, S; Gambetta, S; Gandelman, M; Gandini, P; Gao, Y; Garofoli, J; Tico, J; Garrido, L; Gaspar, C; Gauld, R; Gavardi, L; Gavrilov, G; Gersabeck, E; Gersabeck, M; Gershon, T; Ghez, P; Gianelle, A; Giani', S; Gibson, V; Giubega, L; Gligorov, V; Göbel, C; Golubkov, D; Golutvin, A; Gomes, A; Gordon, H; GOTTI, CLAUDIO ;Gándara, M; Diaz, R; Cardoso, L; Graugés, E; Graziani, G; Grecu, A; Greening, E; Gregson, S; Griffith, P; Grillo, L; Grünberg, O; Gui, B; Gushchin, E; Guz, Y; Gys, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S; Hall, S; Hamilton, B; Hampson, T; Han, X; Hansmann Menzemer, S; Harnew, N; Harnew, S; Harrison, J; Hartmann, T; He, J; Head, T; Heijne, V; Hennessy, K; Henrard, P; Henry, L; Morata, J; Van Herwijnen, E; Heß, M; Hicheur, A; Hill, D; Hoballah, M; Hombach, C; Hulsbergen, W; Hunt, P; Hussain, N; Hutchcroft, D; Hynds, D; Idzik, M; Ilten, P; Jacobsson, R; Jaeger, A; Jalocha, J; Jans, E; Jaton, P; Jawahery, A; Jing, F; John, M; Johnson, D; Jones, C; Joram, C; Jost, B; Jurik, N; Kaballo, M; Kandybei, S; Kanso, W; Karacson, M; Karbach, T; Karodia, S; Kelsey, M; Kenyon, I; Ketel, T; KHANJI, BASEM ;Khurewathanakul, C; Klaver, S; Kochebina, O; Kolpin, M; Komarov, I; Koopman, R; Koppenburg, P; Korolev, M; Kozlinskiy, A; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kucewicz, W; KUCHARCZYK, MARCIN ;Kudryavtsev, V; Kurek, K; Kvaratskheliya, T; La Thi, V; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lambert, R; Lanciotti, E; Lanfranchi, G; Langenbruch, C; Langhans, B; Latham, T; Lazzeroni, C; Le Gac, R; Van Leerdam, J; Lees, J; Lefèvre, R; Leflat, A; Lefrançois, J; Leo, S; Leroy, O; Lesiak, T; Leverington, B; Li, Y; Liles, M; Lindner, R; Linn, C; Lionetto, F; Liu, B; Liu, G; Lohn, S; Longstaff, I; Lopes, J; Lopez March, N; Lowdon, P; Lu, H; Lucchesi, D; Luo, H; Lupato, A; Luppi, E; Lupton, O; Machefert, F; Machikhiliyan, I; Maciuc, F; Maev, O; Malde, S; Manca, G; Mancinelli, G; Maratas, J; Marchand, J; Marconi, U; Benito, C; Marino, P; Märki, R; Marks, J; Martellotti, G; Martens, A; Sánchez, A; Martinelli, M ;Santos, D; Vidal, F; Tostes, D; Massafferri, A; Matev, R; Mathe, Z; Matteuzzi, C; Mazurov, A; Mccann, M; Mccarthy, J; Mcnab, A; Mcnulty, R; Mcskelly, B; Meadows, B; Meier, F; Meissner, M; Merk, M; Milanes, D; Minard, M; Moggi, N; Rodriguez, J; Monteil, S; Morandin, M; Morawski, P; Mordà, A; Morello, M; Moron, J; Morris, A; Mountain, R; Muheim, F; Müller, K; Muresan, R; Mussini, M; Muster, B; Naik, P; Nakada, T; Nandakumar, R; Nasteva, I; Needham, M; Neri, N; Neubert, S; Neufeld, N; Neuner, M; Nguyen, A; Nguyen, T; Nguyen Mau, C; Nicol, M; Niess, V; Niet, R; Nikitin, N; Nikodem, T; Novoselov, A; O'Hanlon, D; Oblakowska Mucha, A; Obraztsov, V; Oggero, S; Ogilvy, S; Okhrimenko, O; Oldeman, R; Onderwater, G; Orlandea, M; Goicochea, J; Owen, P; Oyanguren, A; Pal, B; Palano, A; Palombo, F; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Parkes, C; Parkinson, C; Passaleva, G; Patel, G; Patel, M; Patrignani, C; Alvarez, A; Pearce, A; Pellegrino, A; Altarelli, M; Perazzini, S; Trigo, E; Perret, P; Perrin Terrin, M; Pescatore, L; Pesen, E; Petridis, K; Petrolini, A; Olloqui, E; Pietrzyk, B; Pilař, T; Pinci, D; Pistone, A; Playfer, S; Casasus, M; Polci, F; Poluektov, A; Polycarpo, E; Popov, A; Popov, D; Popovici, B; Potterat, C; Price, E; Prisciandaro, J; Pritchard, A; Prouve, C; Pugatch, V; Navarro, A; Punzi, G; Qian, W; Rachwal, B; Rademacker, J; Rakotomiaramanana, B; Rama, M; Rangel, M; Raniuk, I; Rauschmayr, N; Raven, G; Reichert, S; Reid, M; Dos Reis, A; Ricciardi, S; Richards, S; Rihl, M; Rinnert, K; Molina, V; Romero, D; Robbe, P; Rodrigues, A; Rodrigues, E; Perez, P; Roiser, S; Romanovsky, V; Vidal, A; Rotondo, M; Rouvinet, J; Ruf, T; Ruffini, F; Ruiz, H; Valls, P; Sabatino, G; Silva, J; Sagidova, N; Sail, P; Saitta, B; Guimaraes, V; Mayordomo, C; Sedes, B; Santacesaria, R; Rios, C; Santovetti, E; Sapunov, M; Sarti, A; Satriano, C; Satta, A; Saunders, D; Savrie, M; Savrina, D; Schiller, M; Schindler, H; Schlupp, M; Schmelling, M; Schmidt, B; Schneider, O; Schopper, A; Schune, M; Schwemmer, R; Sciascia, B; Sciubba, A; Seco, M; Semennikov, A; Sepp, I; Serra, N; Serrano, J; Sestini, L; Seyfert, P; Shapkin, M; Shapoval, I; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, V; Shires, A; Coutinho, R; Simi, G; Sirendi, M; Skidmore, N; Skwarnicki, T; Smith, N; Smith, E; Smith, E; Smith, J; Smith, M; Snoek, H; Sokoloff, M; Soler, F; Soomro, F; Souza, D; De Paula, B; Spaan, B; Sparkes, A; Spradlin, P; Stagni, F; Stahl, M; Stahl, S; Steinkamp, O; Stenyakin, O; Stevenson, S; Stoica, S; Stone, S; Storaci, B; Stracka, S; Straticiuc, M; Straumann, U; Stroili, R; Subbiah, V; Sun, L; Sutcliffe, W; Swientek, K; Swientek, S; Syropoulos, V; Szczekowski, M; Szczypka, P; Szilard, D; Szumlak, T; T'Jampens, S; Teklishyn, M; Tellarini, G; Teubert, F; Thomas, C; Thomas, E; Van Tilburg, J; Tisserand, V; Tobin, M; Tolk, S; Tomassetti, L; Tonelli, D; Topp Joergensen, S; Torr, N; Tournefier, E; Tourneur, S; Tran, M; Tresch, M; Tsaregorodtsev, A; Tsopelas, P; Tuning, N; Garcia, M; Ukleja, A; Ustyuzhanin, A; Uwer, U; Vagnoni, V; Valenti, G; Vallier, A; Gomez, R; Regueiro, P; Sierra, C; Vecchi, S; Velthuis, J; Veltri, M; Veneziano, G; Vesterinen, M; Viaud, B; Vieira, D; Diaz, M; Vilasis Cardona, X; Vollhardt, A; Volyanskyy, D; Voong, D; Vorobyev, A; Vorobyev, V; Voß, C; Voss, H; De Vries, J; Waldi, R; Wallace, C; Wallace, R; Walsh, J; Wandernoth, S; Wang, J; Ward, D; Watson, N; Websdale, D; Whitehead, M; Wicht, J; Wiedner, D; Wilkinson, G; Williams, M; Williams, M; Wilson, F; Wimberley, J; Wishahi, J; Wislicki, W; Witek, M; Wormser, G; Wotton, S; Wright, S; Wu, S; Wyllie, K; Xie, Y; Xing, Z; Xu, Z; Yang, Z; Yuan, X; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, L; Zhang, W; Zhang, Y; Zhelezov, A; Zhokhov, A; Zhong, L; Zvyagin, A.
2014
Abstract
The first observation of the Cabibbo-suppressed decay Λ b → J/ψpπ is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. A prominent signal is observed and the branching fraction relative to the decay mode Λ b → J/ψpK is determined to be B (Λb → J / ψp π-/ B Λ b → J / ψp K- = 0.0824 ± 0.0025 stat ± 0.0042 syst. A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be A CP (Λb → J / ψp π-) - A CP (Λb → J / ψp K-) = + 5.7 ± 2.4 stat ± 1.2 syst %, which is compatible with CP symmetry at the 2.2σ level. [Figure not available: see fulltext.] © 2014 The Author(s).
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