Search for the Λ_b<SUP>0</SUP> → Λη′ and Λ_b<SUP>0</SUP> → Λη decays with the LHCb detector

Collapse authors list.
Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S et al (show 710 more authors) , Alkhazov, G, Cartelle, P Alvarez, Alves, AA Jr, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreotti, M, Andrews, JE, Appleby, RB, Gutierrez, O Aquines, Archilli, F, d'Argent, P, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Batozskaya, V, Battista, V, Bay, A, Beaucourt, L, Beddow, J, Bedeschi, F, Bediaga, I, Bel, LJ, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Benton, J, Berezhnoy, A, Bernet, R, Bertolin, A, Bettler, M-O, van Beuzekom, M, Bien, A, Bifani, S, Bird, T, Birnkraut, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Bondar, A, Bondar, N, Bonivento, W, Borghi, S, Borsato, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bowen, E, Bozzi, C, Braun, S, Brett, D, Britsch, M, Britton, T, Brodzicka, J, Brook, NH, Bursche, A, Buytaert, J, Cadeddu, S, Calabrese, R, Calvi, M, Calvo Gomez, M, Campana, P, Perez, D Campora, Capriotti, L, Carbone, A, Carboni, G, Cardinale, R, Cardini, A, Carniti, P, Carson, L, Carvalho Akiba, K, Casanova Mohr, R, Casse, G ORCID: 0000-0002-8516-237X, Cassina, L, Garcia, L Castillo, Cattaneo, M, Cauet, Ch, Cavallero, G, Cenci, R, Charles, M, Charpentier, Ph, Chefdeville, M, Chen, S, Cheung, S-F, Chiapolini, N, Chrzaszcz, M, Vidal, X Cid, Ciezarek, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Coco, V, Cogan, J, Cogneras, E, Cogoni, V, Cojocariu, L, Collazuol, G, Collins, P, Comerma-Montells, A, Contu, A, Cook, A, Coombes, M, Coquereau, S, Corti, G, Corvo, M, Couturier, B, Cowan, GA, Craik, DC, Crocombe, A, Cruz Torres, M, Cunliffe, S, Currie, R, D'Ambrosio, C, Dalseno, J, David, PNY, Davis, A, De Bruyn, K, De Capua, S, De Cian, M, De Miranda, JM, De Paula, L, De Silva, W, De Simone, P, Dean, C-T, Decamp, D, Deckenhoff, M, Del Buono, L, Deleage, N, Derkach, D, Deschamps, O, Dettori, F, Dey, B, Di Canto, A, Di Ruscio, F, Dijkstra, H, Donleavy, S, Dordei, F, Dorigo, M, Dosil Suarez, A, Dossett, D, Dovbnya, A, Dreimanis, K, Dufour, L, 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, Ch, Ely, S, Esen, S, Evans, HM, Evans, T, Falabella, A, Faerber, C, Farinelli, C, Farley, N, Farry, S ORCID: 0000-0001-5119-9740, Fay, R, Ferguson, D, Fernandez Albor, V, Ferrari, F, Ferreira Rodrigues, F, Ferro-Luzzi, M, Filippov, S, Fiore, M, Fiorini, M, Firlej, M, Fitzpatrick, C, Fiutowski, T, Fohl, K, Fol, P, Fontana, M, Fontanelli, F, Forty, R, Francisco, O, Frank, M, Frei, C, Frosini, M, Fu, J, Furfaro, E, Gallas Torreira, A, Galli, D, Gallorini, S, Gambetta, S, Gandelman, M, Gandini, P, Gao, Y, Garcia Pardinas, J, Garofoli, J, Tico, J Garra, Garrido, L, Gascon, D, Gaspar, C, Gastaldi, U, Gauld, R, Gavardi, L, Gazzoni, G, Geraci, A, Gerick, D, Gersabeck, E, Gersabeck, M, Gershon, T, Ghez, Ph, Gianelle, A, Giani, S, Gibson, V, Girard, OG, Giubega, L, Gligorov, VV, Goebel, C, Golubkov, D, Golutvin, A, Gomes, A, Gotti, C, Gandara, M Grabalosa, Graciani Diaz, R, Cardoso, LA Granado, Grauges, E, Graverini, E, Graziani, G, Grecu, A, Greening, E, Gregson, S, Griffith, P, Grillo, L, Gruenberg, O, Gui, B, Gushchin, E, Guz, Yu, Gys, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haines, SC, Hall, S, Hamilton, B, Hampson, T, Han, X, Hansmann-Menzemer, S, Harnew, N, Harnew, ST, Harrison, J, He, J, Head, T, Heijne, V, Hennessy, K ORCID: 0000-0002-1529-8087, Henrard, P, Henry, L, Hernando Morata, JA, van Herwijnen, E, Hess, M, Hicheur, A, Hill, D, Hoballah, M, Hombach, C, Hulsbergen, W, Humair, T, Hussain, N, Hutchcroft, D ORCID: 0000-0002-4174-6509, Hynds, D, Idzik, M, Ilten, P, Jacobsson, R, Jaeger, A, Jalocha, J, Jans, E, Jawahery, A, Jing, F, John, M, Johnson, D, Jones, CR, Joram, C, Jost, B, Jurik, N, Kandybei, S, Kanso, W, Karacson, M, Karbach, TM, Karodia, S, Kelsey, M, Kenyon, IR, Kenzie, M, Ketel, T, Khanji, B, Khurewathanakul, C, Klaver, S, Klimaszewski, K, Kochebina, O, Kolpin, M, Komarov, I, Koopman, RF, Koppenburg, P, Korolev, M, Kravchuk, L, Kreplin, K, Kreps, M, Krocker, G, Krokovny, P, Kruse, F, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kuonen, AK, Kurek, K, Kvaratskheliya, T, La Thi, VN, Lacarrere, D, Lafferty, G, Lai, A, Lambert, D, Lambert, RW, Lanfranchi, G, Langenbruch, C, Langhans, B, Latham, T, Lazzeroni, C, Le Gac, R, van Leerdam, J, Lees, J-P, Lefevre, R, Leflat, A, Lefrancois, J, Leroy, O, Lesiak, T, Leverington, B, Li, Y, Likhomanenko, T, Liles, M, Lindner, R, Linn, C, Lionetto, F, Liu, B, Liu, X, Lohn, S, Longstaff, I, Lopes, JH, Lucchesir, D, Lucio Martinez, M, Luo, H, Lupato, A, Luppi, E, Lupton, O, Machefert, F, Maciuc, F, Maev, O, Maguire, K, Malde, S, Malinin, A, Manca, G, Mancinelli, G, Manning, P, Mapelli, A, Maratas, J, Marchand, JF, Marconi, U, Marin Benito, C, Marino, P, Maerki, R, Marks, J, Martellotti, G, Martinelli, M, Santos, D Martinez, Martinez Vidal, F, Martins Tostes, D, Massafferri, A, Matev, R, Mathad, A, Mathe, Z, Matteuzzi, C, Matthieu, K, Mauri, A, Maurin, B, Mazurov, A, McCann, M, McCarthy, J, McNab, A, McNulty, R, Meadows, B, Meier, F, Meissner, M, Merk, M, Milanes, DA, Minard, M-N, Mitzel, DS, Molina Rodriguez, J, Monteil, S, Morandin, M, Morawski, P, Morda, A, Morello, MJ, Moron, J, Morris, AB, Mountain, R, Muheim, F, Mueller, J, Mueller, K, Mueller, V, Mussini, M, Muster, B, Naik, P, Nakada, T, Nandakumar, R, Nasteva, I, Needham, M, Neri, N, Neubert, S, Neufeld, N, Neuner, M, Nguyen, AD, Nguyen, TD, Nguyen-Mau, C, Niess, V, Niet, R, Nikitin, N, Nikodem, T, Ninci, D, Novoselov, A, O'Hanlon, DP, Oblakowska-Mucha, A, Obraztsov, V, Ogilvy, S, Okhrimenko, O, Oldeman, R, Onderwater, CJG, Osorio Rodrigues, B, Otalora Goicochea, JM, Otto, A, Owen, P, Oyanguren, A, Palano, A, Palombo, F, Palutan, M, Panman, J, Papanestis, A, Pappagallo, M, Pappalardo, LL, Parkes, C, Passaleva, G, Patel, GD, Patel, M, Patrignani, C, Pearce, A, Pellegrino, A, Penso, G, Altarelli, M Pepe, Perazzini, S, Perret, P, Pescatore, L, Petridis, K, Petrolini, A, Petruzzo, M, Picatoste Olloqui, E, Pietrzyk, B, Pilar, T, Pinci, D, Pistone, A, Piucci, A, Playfer, S, Plo Casasus, M, Poikela, T, Polci, F, Poluektov, A, Polyakov, I, Polycarpo, E, Popov, A, Popov, D, Popovici, B, Potterat, C, Price, E, Price, JD, Prisciandaro, J, Pritchard, A, Prouve, C, Pugatch, V, Navarro, A Puig, Punzi, G, Qian, W, Quagliani, R, Rachwal, B, Rademacker, JH, Rakotomiaramanana, B, Rama, M, Rangel, MS, Raniuk, I, Rauschmayr, N, Raven, G, Redi, F, Reichert, S, Reid, MM, dos Reis, AC, Ricciardi, S, Richards, S, Rihl, M, Rinnert, K, Rives Molina, V, Robbe, P, Rodrigues, AB, Rodrigues, E, Rodriguez Lopez, JA, Perez, P Rodriguez, Roiser, S, Romanovsky, V, Romero Vidal, A, Rotondo, M, Rouvinet, J, Ruf, T, Ruiz, H, Ruiz Valls, P, Saborido Silva, JJ, Sagidova, N, Sail, P, Saitta, B, Salustino Guimaraes, V, Sanchez Mayordomo, C, Sanmartin Sedes, B, Santacesaria, R, Santamarina Rios, C, Antimaria, M, Santovetti, E, Sarti, A, Satriano, C, Satta, A, Saunders, DM, Savrina, D, Schiller, M, Schindler, H, Schlupp, M, Schmelling, M, Schmelzer, T, Schmidt, B, Schneider, O, Schopper, A, Schubiger, M, Schune, M-H, Schwemmer, R, Sciascia, B, Sciubba, A, Semennikov, A, Sepp, I, Serra, N, Serrano, J, Sestini, L, Seyfert, P, Shapkin, M, Shapoval, I, Shcheglov, Y, Shears, T ORCID: 0000-0002-2653-1366, Shekhtman, L, Shevchenko, V, Shires, A, Coutinho, R Silva, Simi, G, Sirendi, M, Skidmore, N, Skillicorn, I, Skwarnicki, T, Smith, E, Smith, E, Smith, IT, Smith, J, Smith, M, Snoek, H, Sokoloff, MD, Soler, FJP, Soomro, F, Souza, D, Souza De Paula, B, Spaan, B, Pradlin, P, Sridharan, S, Stagni, F, Stahl, M, Stahl, S, Steinkamp, O, Stenyakin, O, Sterpka, F, Stevenson, S, Stoica, S, Stone, S, Storaci, B, Strackat, S, Straticiuc, M, Straumann, U, Sun, L, Sutcliffe, W, Swientek, K, Swientek, S, Syropoulos, V, Szczekowski, M, Szczypka, P, Szumlak, T, T'Jampens, S, Tekampe, T, Teklishyn, M, Tellarini, G, Teubert, F, Thomas, C, Thomas, E, van Tilburg, J, Tisserand, V, Tobin, M, Todd, J, Tolk, S, Tomassetti, L, Tonelli, D, Topp-Joergensen, S, Torr, N, Tournefier, E, Tourneur, S, Trabelsi, K, Tran, MT, Tresch, M, Trisovic, A, Tsaregorodtsev, A, Tsopelas, P, Tuning, N, Ukleja, A, Ustyuzhanin, A, Uwer, U, Vacca, C, Vagnoni, V, Valenti, G, Vallier, A, Gomez, R Vazquez, Vazquez Regueiro, P, Vazquez Sierra, C, Vecchi, S, Velthuis, JJ, Veltri, M, Veneziano, G, Vesterinen, M, Viaud, B, Vieira, D, Vieites Diaz, M, Vilasis-Cardona, X, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voss, C, de Vries, JA, Waldi, R, Wallace, C, Wallace, R, Walsh, J, Wandernoth, S, Wang, J, Ward, DR, Watson, NK, Websdale, D, Weiden, A, Whitehead, M, Wiedner, D, Wilkinson, G, Wilkinson, M, Williams, M, Williams, MP, Williams, M, Williams, T, Wilson, FF, Wimberley, J, Wishahi, J, Wislicki, W, Witek, M, Wormser, G, Wotton, SA, Wright, S, Wyllie, K, Xie, Y, Xu, Z, Yang, Z, Yu, J, Yuan, X, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, L, Zhang, Y, Zhelezov, A, Zhokhov, A and Zhong, L (2015) Search for the Λ_b<SUP>0</SUP> → Λη′ and Λ_b<SUP>0</SUP> → Λη decays with the LHCb detector. JOURNAL OF HIGH ENERGY PHYSICS, 09 (9). 006-.

Text 1505.03295v2.pdf - Published version Download (701kB)

Abstract

A search is performed for the as yet unobserved baryonic $\Lambda_b \rightarrow \Lambda \eta^\prime$ and $\Lambda_b \rightarrow \Lambda \eta$ decays with 3$fb^{-1}$ of proton-proton collision data recorded by the LHCb experiment. The $B^0 \rightarrow K_S^0 \eta^\prime$ decay is used as a normalisation channel. No significant signal is observed for the $\Lambda_b \rightarrow \Lambda \eta^\prime$ decay. An upper limit is found on the branching fraction of $\mathcal{B}(\Lambda_b \rightarrow \Lambda \eta^\prime)<3.1\times10^{-6}$} at 90\% confidence level. Evidence is seen for the presence of the $\Lambda_b \rightarrow \Lambda \eta$ decay at the level of $3\sigma$ significance, with a branching fraction $\mathcal{B}(\Lambda_b \rightarrow \Lambda \eta)=(9.3^{+7.3}_{-5.3})\times10^{-6}$}.

Item Type:	Article
Additional Information:	22 pages, 6 figures. v2 is published version (very minor revisions)
Uncontrolled Keywords:	Hadron-Hadron Scattering, B physics, Flavor physics
Depositing User:	Symplectic Admin
Date Deposited:	08 Jul 2016 09:13
Last Modified:	05 Oct 2023 11:01
DOI:	10.1007/JHEP09(2015)006
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3002188