LHCb CollaborationAaij, R.Beteta, C. AbellanAdeva, B.Adinolfi, M.Affolder, A.Ajaltouni, Z.Akar, S.Albrecht, J.Alessio, F.Alexander, M.Ali, S.Alkhazov, G.Cartelle, P. AlvarezAmato, S.Amerio, S.Amhis, Y.An, L.Anderlini, L.Anderson, J.Andreassi, G.Andreotti, M.Andrews, J. E.Appleby, R. B.Gutierrez, O. AquinesArchilli, F.D'Argent, P.Artamonov, A.Artuso, M.Aslanides, E.Auriemma, G.Baalouch, M.Bachmann, S.Back, J. J.Badalov, A.Baesso, C.Baldini, W.Barlow, R. J.Barschel, C.Barsuk, S.Barter, W.Batozskaya, V.Battista, V.Bay, A.Beaucourt, L.Beddow, J.Bedeschi, F.Bediaga, I.Bel, L. J.Bellee, V.Belloli, N.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.Billoir, P.Bird, T.Birnkraut, A.Bizzeti, A.Blake, T.Blanc, F.Blouw, J.Blusk, S.Bocci, V.Bondar, A.Bondar, N.Bonivento, W.Borghi, S.Borisyak, M.Borsato, M.Bowcock, T. J. V.Bowen, E.Bozzi, C.Braun, S.Britsch, M.Britton, T.Brodzicka, J.Brook, N. H.Buchanan, E.Burr, C.Bursche, A.Buytaert, J.Cadeddu, S.Calabrese, R.Calvi, M.Gomez, M. CalvoCampana, P.Perez, D. CamporaCapriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carniti, P.Carson, L.Carvalho Akiba, K.Casse, G.Cassina, L.Garcia, L. CastilloCattaneo, M.Cauet, Ch.Cavallero, G.Cenci, R.Charles, M.Charpentier, Ph.Chefdeville, M.Chen, S.Cheung, S-F.Chiapolini, N.Chrzaszcz, M.Vidal, X. CidCiezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.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, G. A.Craik, D. C.Crocombe, A.Torres, M. CruzCunliffe, S.Currie, R.D'Ambrosio, C.Dall'Occo, E.Dalseno, J.David, P. N. Y.Davis, A.De Aguiar Francisco, O.De Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Simone, P.Dean, C-T.Decamp, D.Deckenhoff, M.Del Buono, L.Deleage, N.Demmer, M.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.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, H. M.Evans, T.Falabella, A.Faerber, C.Farley, N.Farry, S.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.Forshaw, D. C.Forty, R.Frank, M.Frei, C.Frosini, M.Fu, J.Furfaro, E.Torreira, A. GallasGalli, D.Gallorini, S.Gambetta, S.Gandelman, M.Gandini, P.Gao, Y.Garcia Pardinas, J.Tico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gauld, R.Gavardi, L.Gazzoni, G.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Ghez, Ph.Giani, S.Gibson, V.Girard, O. G.Giubega, L.Gligorov, V. V.Goebel, C.Golubkov, D.Golutvin, A.Gomes, A.Gotti, C.Gandara, M. GrabalosaGraciani Diaz, R.Cardoso, L. A. GranadoGrauges, E.Graverini, E.Graziani, G.Grecu, A.Greening, E.Gregson, S.Griffith, P.Grillo, L.Grunberg, O.Gui, B.Gushchin, E.Guz, YuGys, T.Hadavizadeh, T.Hadjivasiliou, C.Haefeli, G.Haen, C.Haines, S. C.Hall, S.Hamilton, B.Han, X.Hansmann-Menzemer, S.Harnew, N.Harnew, S. T.Harrison, J.He, J.Head, T.Heijne, V.Hennessy, K.Henrard, P.Henry, L.Van Herwijnen, E.Hess, M.Hicheur, A.Hill, D.Hoballah, M.Hombach, C.Hulsbergen, W.Humair, T.Hussain, N.Hutchcroft, D.Hynds, D.Idzik, M.Ilten, P.Jacobsson, R.Jaeger, A.Jalocha, J.Jans, E.Jawahery, A.John, M.Johnson, D.Jones, C. R.Joram, C.Jost, B.Jurik, N.Kandybei, S.Kanso, W.Karacson, M.Karbach, T. M.Karodia, S.Kecke, M.Kelsey, M.Kenyon, I. R.Kenzie, M.Ketel, T.Khairullin, E.Khanji, B.Khurewathanakul, C.Klaver, S.Klimaszewski, K.Kochebina, O.Kolpin, M.Komarov, I.Koopman, R. F.Koppenburg, P.Kozeiha, M.Kravchuk, L.Kreplin, K.Kreps, M.Krocker, G.Krokovny, P.Kruse, F.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuonen, A. K.Kurek, K.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lambert, D.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.Lemos Cid, E.Leroy, O.Lesiak, T.Leverington, B.Li, Y.Likhomanenko, T.Liles, M.Lindner, R.Linn, C.Lionetto, F.Liu, B.Liu, X.Loh, D.Longstaff, I.Lopes, J. H.Lucchesi, D.Lucio Martinez, M.Luo, H.Lupato, A.Luppi, E.Lupton, O.Lusiani, A.Machefert, F.Maciuc, F.Maev, O.Maguire, K.Malde, S.Malinin, A.Manca, G.Mancinelli, G.Manning, P.Mapelli, A.Maratas, J.Marchand, J. F.Marconi, U.Marin Benito, C.Marino, P.Marks, J.Martellotti, G.Martin, M.Martinelli, M.Martinez Santos, D.Martinez Vidal, F.Martins Tostes, D.Massafferri, A.Matev, R.Mathad, A.Mathe, Z.Matteuzzi, C.Mauri, A.Maurin, B.Mazurov, A.Mccann, M.Mccarthy, J.Mcnab, A.Mcnulty, R.Meadows, B.Meier, F.Meissner, M.Melnychuk, D.Merk, M.Michielin, E.Milanes, D. A.Minard, M-N.Mitzel, D. S.Molina Rodriguez, J.Monroy, I. A.Monteil, S.Morandin, M.Morawski, P.Morda, A.Morello, M. J.Moron, J.Morris, A. B.Mountain, R.Muheim, F.Mueller, D.Mueller, J.Mueller, K.Mueller, V.Mussini, M.Muster, B.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nasteva, I.Needham, M.Neri, N.Neubert, S.Neufeld, N.Neuner, M.Nguyen, A. D.Nguyen, T. D.Nguyen-Mau, C.Niess, V.Niet, R.Nikitin, N.Nikodem, T.Novoselov, A.O'Hanlon, D. P.Oblakowska-Mucha, A.Obraztsov, V.Ogilvy, S.Okhrimenko, O.Oldeman, R.Onderwater, C. J. G.Osorio Rodrigues, B.Otalora Goicochea, J. 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P.Soomro, F.Souza, D.Souza De Paula, B.Spaan, B.Spradlin, P.Sridharan, S.Stagni, F.Stahl, M.Stahl, S.Stefkova, S.Steinkamp, O.Stenyakin, O.Stevenson, S.Stoica, S.Stone, S.Storaci, B.Stracka, S.Straticiuc, M.Straumann, U.Sun, L.Sutcliffe, W.Swientek, K.Swientek, S.Syropoulos, V.Szczekowski, M.Szumlak, T.T'Jampens, S.Tayduganov, A.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, M. T.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. VazquezVazquez Regueiro, P.Vazquez Sierra, C.Vecchi, S.Velthuis, J. J.Veltri, M.Veneziano, G.Vesterinen, M.Viaud, B.Vieira, D.Vieites Diaz, M.Vilasis-Cardona, X.Volkov, V.Vollhardt, A.Volyanskyy, D.Voong, D.Vorobyev, A.Vorobyev, V.Voss, C.De Vries, J. A.Waldi, R.Wallace, C.Wallace, R.Walsh, J.Wandernoth, S.Wang, J.Ward, D. R.Watson, N. K.Websdale, D.Weiden, A.Whitehead, M.Wilkinson, G.Wilkinson, M.Williams, M.Williams, M. P.Williams, M.Williams, T.Wilson, F. F.Wimberley, J.Wishahi, J.Wislicki, W.Witek, M.Wormser, G.Wotton, S. A.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.Zhong, L.Zucchelli, S.2016-02-162016-02-162016-02-16201510.1103/PhysRevLett.115.241801https://infoscience.epfl.ch/handle/20.500.14299/123908WOS:000366171900003Using a pp collision data sample corresponding to an integrated luminosity of 3.0 fb(-1), collected by the LHCb detector, we present the first search for the strangeness-changing weak decay Xi(-)(b) -> Delta(0)(b)pi(-). No b hadron decay of this type has been seen before. A signal for this decay, corresponding to a significance of 3.2 standard deviations, is reported. The relative rate is measured to be f Xi(-)(b)/f Lambda B-0(b)(Xi(-)(b) -> Lambda(0)(b)pi(-)) = (5.7 +/- 1.8(-0.9)(+0.8)) x 10(-4) where f Xi(-)(b) and f Lambda(0)(b) are the b -> Xi(-)(b) and b -> Lambda(0)(b) fragmentation fractions, and B(Xi(-)(b) -> Lambda(0)(b)pi(-)) is the branching fraction. Assuming f Xi(-)(b)/f Lambda(0)(b) is bounded between 0.1 and 0.3, the branching fraction B(Xi(-)(b) -> Lambda(0)(b)pi(-)) would lie in the range from (0.57 +/- 0.21)% to (0.19 +/- 0.07)%.text::journal::journal article::research article