Observation of Excited Lambda(0)(b) Baryons

Aaij, R; Beteta, C; Adametz, A; Adeva, B; Adinolfi, M; Adrover, C; Affolder, A; Ajaltouni, Z; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P; Alves, A; Amato, S; Amhis, Y; Anderson, J; Appleby, R; Gutierrez, O; Archilli, F; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Bachmann, S; Back, J; Balagura, V; Baldini, W; Barlow, R; Barschel, C; Barsuk, S; Barter, W; Bates, A; Bauer, C; Bauer, T; Bay, A; Beddow, J; Bediaga, I; Belogurov, S; Belous, K; Belyaev, I; Ben Haim, E; Benayoun, M; Bencivenni, G; Benson, S; Benton, J; Bernet, R; Bettler, M; Null, B; Bien, A; Bifani, S; Bird, T; Bizzeti, A; Bjornstad, P; Blake, T; Blanc, F; Blanks, C; Blouw, J; Blusk, S; Bobrov, A; Bocci, V; Bondar, A; Bondar, N; Bonivento, W; Borghi, S; Borgia, A; Bowcock, T; Bozzi, C; Brambach, T; Null, B; Bressieux, J; Brett, D; Britsch, M; Britton, T; Brook, N; Brown, H; Buchler Germann, A; Burducea, I; Bursche, A; Buytaert, J; Cadeddu, S; Callot, O; Calvi, M; Gomez, M; Camboni, A; Campana, P; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carson, L; Akiba, K; Casse, G; Cattaneo, M; Cauet, C; Charles, M; Charpentier, P; Chen, P; Chiapolini, N; Chrzaszcz, M; Ciba, K; Vidal, X; Ciezarek, G; Clarke, P; Clemencic, M; Cliff, H; Closier, J; Coca, C; Coco, V; Cogan, J; Cogneras, E; Collins, P; Comerma Montells, A; Contu, A; Cook, A; Coombes, M; Corti, G; Couturier, B; Cowan, G; Craik, D; Currie, R; D'Ambrosio, C; David, P; David, P; De Bonis, I; De Bruyn, K; De Capua, S; De Cian, M; De Miranda, J; De Paula, L; De Simone, P; Decamp, D; Deckenhoff, M; Degaudenzi, H; Del Buono, L; Deplano, C; Derkach, D; Deschamps, O; Dettori, F; Dickens, J; Dijkstra, H; Batista, P; Bonal, F; Donleavy, S; Dordei, F; Suarez, A; Dossett, D; Dovbnya, A; Dupertuis, F; Dzhelyadin, R; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Null, E; Eisele, F; Eisenhardt, S; Ekelhof, R; Eklund, L; El Rifai, I; Elsasser, C; Elsby, D; Pereira, D; Falabella, A; Farber, C; Fardell, G; Farinelli, C; Farry, S; Fave, V; Albor, V; Ferro Luzzi, M; Filippov, S; Fitzpatrick, C; Fontana, M; Fontanelli, F; Forty, R; Francisco, O; Frank, M; Frei, C; Frosini, M; Furcas, S; Torreira, A; Galli, D; Gandelman, M; Gandini, P; Gao, Y; Garnier, J; Garofoli, J; Tico, J; Garrido, L; Gascon, D; Gaspar, C; Gauld, R; Gauvin, N; Gersabeck, M; Gershon, T; Ghez, P; Gibson, V; Gligorov, V; Gobel, C; Golubkov, D; Golutvin, A; Gomes, A; Gordon, H; Gandara, M; Diaz, R; Cardoso, L; Grauges, E; Graziani, G; Grecu, A; Greening, E; Gregson, S; Grunberg, O; Gui, B; Gushchin, E; Guz, Y; Gys, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haines, S; Hampson, T; Hansmann Menzemer, S; Harnew, N; Harnew, S; Harrison, J; Harrison, P; Hartmann, T; He, J; Heijne, V; Hennessy, K; Henrard, P; Morata, J; Null, H; Hicks, E; Hoballah, M; Hopchev, P; Hulsbergen, W; Hunt, P; Huse, T; Huston, R; Hutchcroft, D; Hynds, D; Iakovenko, V; Ilten, P; Imong, J; Jacobsson, R; Jaeger, A; Hussein, M; Jans, E; Jansen, F; Jaton, P; Jean Marie, B; Jing, F; John, M; Johnson, D; Jones, C; Jost, B; Kaballo, M; Kandybei, S; Karacson, M; Karbach, T; Keaveney, J; Kenyon, I; Kerzel, U; Ketel, T; Keune, A; Khanji, B; Kim, Y; Knecht, M; Kochebina, O; Komarov, I; Koopman, R; Koppenburg, P; Korolev, M; Kozlinskiy, A; Kravchuk, L; Kreplin, K; Kreps, M; Krocker, G; Krokovny, P; Kruse, F; Kruzelecki, K; Kucharczyk, M; Kudryavtsev, V; Kvaratskheliya, T; La Thi, V; Lacarrere, D; Lafferty, G; Lai, A; Lambert, D; Lambert, R; Lanciotti, E; Lanfranchi, G; Langenbruch, C; Latham, T; Lazzeroni, C; Le Gac, R; Null, L; Lees, J; Lefevre, R; Leflat, A; Lefrancois, J; Leroy, O; Lesiak, T; Li, L; Li, Y; Gioi, L; Lieng, M; Liles, M; Lindner, R; Linn, C; Liu, B; Liu, G; Null, L; Lopes, J; Asamar, E; Lopez March, N; Lu, H; Luisier, J; Mac Raighne, A; Machefert, F; Machikhiliyan, I; Maciuc, F; Maev, O; Magnin, J; Malde, S; Mamunur, R; Manca, G; Mancinelli, G; Mangiafave, N; Marconi, U; Marki, R; Marks, J; Martellotti, G; Martens, A; Martin, L; Sanchez, A; Martinelli, M; Santos, D; Massafferri, A; Mathe, Z; Matteuzzi, C; Matveev, M; Maurice, E; Maynard, B; Mazurov, A; Mccarthy, J; Mcgregor, G; Mcnulty, R; Meissner, M; Merk, M; Merkel, J; Milanes, D; Minard, M; Rodriguez, J; Monteil, S; Moran, D; Morawski, P; Mountain, R; Mous, I; Muheim, F; Muller, K; Muresan, R; Muryn, B; Muster, B; Mylroie Smith, J; Naik, P; Nakada, T; Nandakumar, R; Nasteva, I; Needham, M; Neufeld, N; Nguyen, A; Nguyen Mau, C; Nicol, M; Niess, V; Nikitin, N; Nikodem, T; Nomerotski, A; Novoselov, A; Oblakowska Mucha, A; Obraztsov, V; Oggero, S; Ogilvy, S; Okhrimenko, O; Oldeman, R; Orlandea, M; Goicochea, J; Owen, P; Pal, B; Palacios, J; Palano, A; Palutan, M; Panman, J; Papanestis, A; Pappagallo, M; Parkes, C; Parkinson, C; Passaleva, G; Patel, G; Patel, M; Patrick, G; Patrignani, C; Pavel Nicorescu, C; Alvarez, A; Pellegrino, A; Penso, G; Altarelli, M; Perazzini, S; Perego, D; Trigo, E; Yzquierdo, A; Perret, P; Perrin Terrin, M; Pessina, G; Petrolini, A; Phan, A; Olloqui, E; Valls, B; Pietrzyk, B; Pilar, T; Pinci, D; Plackett, R; Playfer, S; Casasus, M; Polci, F; Polok, G; Poluektov, A; Polycarpo, E; Popov, D; Popovici, B; Potterat, C; Powell, A; Prisciandaro, J; Pugatch, V; Navarro, A; Qian, W; Rademacker, J; Rakotomiaramanana, B; Rangel, M; Raniuk, I; Raven, G; Redford, S; Reid, M; Null, R; Ricciardi, S; Richards, A; Rinnert, K; Romero, D; Robbe, P; Rodrigues, E; Rodrigues, F; Perez, P; Rogers, G; Roiser, S; Romanovsky, V; Rosello, M; Rouvinet, J; Ruf, T; Ruiz, H; Sabatino, G; Silva, J; Sagidova, N; Sail, P; Saitta, B; Salzmann, C; Sedes, B; Sannino, M; Santacesaria, R; Rios, C; Santinelli, R; Santovetti, E; Sapunov, M; Sarti, A; Satriano, C; Satta, A; Savrie, M; Savrina, D; Schaack, P; Schiller, M; Schindler, H; Schleich, S; Schlupp, M; Schmelling, M; Schmidt, B; Schneider, O; Schopper, A; Schune, M; Schwemmer, R; Sciascia, B; Sciubba, A; Seco, M; Semennikov, A; Senderowska, K; Sepp, I; Serra, N; Serrano, J; Seyfert, P; Shapkin, M; Shapoval, I; Shatalov, P; Shcheglov, Y; Shears, T; Shekhtman, L; Shevchenko, O; Shevchenko, V; Shires, A; Coutinho, R; Skwarnicki, T; Smith, N; Smith, E; Smith, M; Sobczak, K; Soler, F; Solomin, A; Soomro, F; Souza, D; De Paula, B; Spaan, B; Sparkes, A; Spradlin, P; Stagni, F; Stahl, S; Steinkamp, O; Stoica, S; Stone, S; Storaci, B; Straticiuc, M; Straumann, U; Subbiah, V; Swientek, S; Szczekowski, M; Szczypka, P; Szumlak, T; T'Jampens, S; Teklishyn, M; Teodorescu, E; Teubert, F; Thomas, C; Thomas, E; Null, T; Tisserand, V; Tobin, M; Tolk, S; Topp Joergensen, S; Torr, N; Tournefier, E; Tourneur, S; Tran, M; Tsaregorodtsev, A; Tuning, N; Garcia, M; Ukleja, A; Uwer, U; Vagnoni, V; Valenti, G; Gomez, R; Regueiro, P; Vecchi, S; Velthuis, J; Veltri, M; Vesterinen, M; Viaud, B; Videau, I; Vieira, D; Vilasis Cardona, X; Visniakov, J; Vollhardt, A; Volyanskyy, D; Voong, D; Vorobyev, A; Vorobyev, V; Voss, C; Voss, H; Waldi, R; Wallace, R; Wandernoth, S; Wang, J; Ward, D; Watson, N; Webber, A; Websdale, D; Whitehead, M; Wicht, J; Wiedner, D; Wiggers, L; Wilkinson, G; Williams, M; Williams, M; Wilson, F; Wishahi, J; Witek, M; Witzeling, W; Wotton, S; Wright, S; Wu, S; Wyllie, K; Xie, Y; Xing, F; Xing, Z; Yang, Z; Young, R; Yuan, X; Yushchenko, O; Zangoli, M; Zavertyaev, M; Zhang, F; Zhang, L; Zhang, W; Zhang, Y; Zhelezov, A; Zhong, L; Zvyagin, A

doi:10.1103/PhysRevLett.109.172003

Using pp collision data corresponding to 1.0 fb−1 integrated luminosity collected by the LHCb detector, two narrow states are observed in the Λ0bπ+π− spectrum with masses 5911.97±0.12(stat)±0.02(syst)±0.66(Λ0b mass) MeV/c2 and 5919.77±0.08(stat)±0.02(syst)±0.66(Λ0b mass) MeV/c2. The significances of the observations are 5.2 and 10.2 standard deviations, respectively. These states are interpreted as the orbitally excited Λ0b baryons, Λ*0b(5912) and Λ*0b(5920).

Aaij, R., Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., et al. (2012). Observation of Excited Lambda(0)(b) Baryons. PHYSICAL REVIEW LETTERS, 109(17), 172003 [10.1103/PhysRevLett.109.172003].