LHCb CollaborationAaij, R.Beteta, C. AbellanAckernley, T.Adeva, B.Adinolfi, M.Afsharnia, H.Aidala, C. A.Aiola, S.Ajaltouni, Z.Akar, S.Albrecht, J.Alessio, F.Alexander, M.Alfonso Albero, A.Aliouche, Z.Alkhazov, G.Cartelle, P. AlvarezAmato, S.Amhis, Y.An, L.Anderlini, L.Andreianov, A.Andreotti, M.Archilli, F.Artamonov, A.Artuso, M.Arzymatov, K.Aslanides, E.Atzeni, M.Audurier, B.Bachmann, S.Bachmayer, M.Back, J. J.Baker, S.Baladron Rodriguez, P.Balagura, VBaldini, W.Leite, J. BaptistaBarlow, R. J.Barsuk, S.Barter, W.Bartolini, M.Baryshnikov, F.Basels, J. M.Bassi, G.Batsukh, B.Battig, A.Bay, A.Becker, M.Bedeschi, F.Bediaga, IBeiter, A.Belavin, VBelin, S.Bellee, VBelous, K.Belov, IBelyaev, IBencivenni, G.Ben-Haim, E.Berezhnoy, A.Bernet, R.Berninghoff, D.Bernstein, H. C.Bertella, C.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bezshyiko, IaBhasin, S.Bhom, J.Bian, L.Bieker, M. S.Bifani, S.Billoir, P.Birch, M.Bishop, F. C. R.Bizzeti, A.Bjorn, M.Blago, M. P.Blake, T.Blanc, F.Blusk, S.Bobulska, D.Boelhauve, J. A.Boente Garcia, O.Boettcher, T.Boldyrev, A.Bondar, A.Bondar, N.Borghi, S.Borisyak, M.Borsato, M.Borsuk, J. T.Bouchiba, S. A.Bowcock, T. J., VBoyer, A.Bozzi, C.Bradley, M. J.Braun, S.Brea Rodriguez, A.Brodski, M.Brodzicka, J.Gonzalo, A. BrossaBrundu, D.Buonaura, A.Burr, C.Bursche, A.Butkevich, A.Butter, J. S.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Calefice, L.Diaz, L. CaleroCali, S.Calladine, R.Calvi, M.Calvo Gomez, M.Magalhaes, P. CamargoCamboni, A.Campana, P.Quezada, A. F. CampoverdeCapelli, S.Capriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carli, ICarniti, P.Carus, L.Akiba, K. CarvalhoCasais Vidal, A.Casse, G.Cattaneo, M.Cavallero, G.Celani, S.Cerasoli, J.Chadwick, A. J.Chapman, M. G.Charles, M.Charpentier, PhChatzikonstantinidis, G.Barajas, C. A. ChavezChefdeville, M.Chen, C.Chen, S.Chernov, A.Chitic, S-GChobanova, VCholak, S.Chrzaszcz, M.Chubykin, A.Chulikov, VCiambrone, P.Cicala, M. F.Cid Vidal, X.Ciezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H., VClosier, J.Cobbledick, J. L.Coco, VCoelho, J. A. B.Cogan, J.Cogneras, E.Cojocariu, L.Collins, P.Colombo, T.Congedo, L.Contu, A.Cooke, N.Coombs, G.Corti, G.Sobral, C. M. CostaCouturier, B.Craik, D. C.Crkovska, J.Torres, M. CruzCurrie, R.Da Silva, C. L.Dall'Occo, E.Dalseno, J.D'Ambrosio, C.Danilina, A.D'Argent, P.Davis, A.Francisco, O. De AguiarDe Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, D.De Simone, P.de Vries, J. A.Dean, C. T.Dean, W.Decamp, D.Del Buono, L.Delaney, B.Dembinski, H-PDendek, A.Denysenko, VDerkach, D.Deschamps, O.Desse, F.Dettori, F.Dey, B.Di Nezza, P.Didenko, S.Dieste Maronas, L.Dijkstra, H.Dobishuk, VDonohoe, A. M.Dordei, F.dos Reis, A. C.Douglas, L.Dovbnya, A.Downes, A. G.Dreimanis, K.Dudek, M. W.Dufour, L.Duk, VDurante, P.Durham, J. M.Dutta, D.Dziewiecki, M.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, VEidelman, S.Eisenhardt, S.Ek-In, S.Eklund, L.Ely, S.Ene, A.Epple, E.Escher, S.Eschle, J.Esen, S.Evans, T.Falabella, A.Fan, J.Fan, Y.Fang, B.Farley, N.Farry, S.Fazzini, D.Fedin, P.Feo, M.Declara, P. FernandezFernandez Prieto, A.Fernandez-tenllado Arribas, J. M.Ferrari, F.Lopes, L. FerreiraRodrigues, F. FerreiraSole, S. FerreresFerrillo, M.Ferro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fischer, K. M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Lima, V. FrancoSevilla, M. FrancoFrank, M.Franzoso, E.Frau, G.Frei, C.Friday, D. A.Fu, J.Fuehring, Q.Funk, W.Gabriel, E.Gaintseva, T.Gallas Torreira, A.Galli, D.Gambetta, S.Gan, Y.Gandelman, M.Gandini, P.Gao, Y.Garau, M.Martin, L. M. GarciaGarcia Moreno, P.Pardinas, J. GarciaGarcia Plana, B.Rosales, F. A. GarciaGarrido, L.Gaspar, C.Geertsema, R. E.Gerick, D.Gerken, L. L.Gersabeck, E.Gersabeck, M.Gershon, T.Gerstel, D.Ghez, PhGibson, VGiovannetti, M.Gioventu, A.Gironella Gironell, P.Giubega, L.Giugliano, C.Gizdov, K.Gkougkousis, E. L.Gligorov, V. V.Gobel, C.Golobardes, E.Golubkov, D.Golutvin, A.Gomes, A.Gomez Fernandez, S.Abrantes, F. GoncalvesGoncerz, M.Gong, G.Gorbounov, P.Gorelov, I., VGotti, C.Govorkova, E.Grabowski, J. P.Graciani Diaz, R.Grammatico, T.Cardoso, L. A. GranadoGrauges, E.Graverini, E.Graziani, G.Grecu, A.Greeven, L. M.Griffith, P.Grillo, L.Gromov, S.Cazon, B. R. GrubergGu, C.Guarise, M.Guenther, P. A.Gushchin, E.Guth, A.Guz, Y.Gys, T.Hadavizadeh, T.Haefeli, G.Haen, C.Haimberger, J.Halewood-leagas, T.Hamilton, P. M.Han, Q.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harrison, T.Hasse, C.Hatch, M.He, J.Hecker, M.Heijhoff, K.Heinicke, K.Hennequin, A. M.Hennessy, K.Henry, L.Heuel, J.Hicheur, A.Hill, D.Hilton, M.Hollitt, S. E.Hu, J.Hu, W.Huang, W.Huang, X.Hulsbergen, W.Hunter, R. J.Hushchyn, M.Hutchcroft, D.Hynds, D.Ibis, P.Idzik, M.Ilin, D.Ilten, P.Inglessi, A.Ishteev, A.Ivshin, K.Jacobsson, R.Jakobsen, S.Jans, E.Jashal, B. K.Jawahery, A.Jevtic, VJezabek, M.Jiang, F.John, M.Johnson, D.Jones, C. R.Jones, T. P.Jost, B.Jurik, N.Kandybei, S.Kang, Y.Karacson, M.Karpov, M.Kazeev, N.Keizer, F.Kenzie, M.Ketel, T.Khanji, B.Kharisova, A.Kholodenko, S.Kim, K. E.Kirn, T.Kirsebom, V. S.Kitouni, O.Klaver, S.Klimaszewski, K.Koliiev, S.Kondybayeva, A.Konoplyannikov, A.Kopciewicz, P.Kopecna, R.Koppenburg, P.Korolev, M.Kostiuk, IKot, O.Kotriakhova, S.Kravchenko, P.Kravchuk, L.Krawczyk, R. D.Kreps, M.Kress, F.Kretzschmar, S.Krokovny, P.Krupa, W.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, VKuindersma, H. S.Kunde, G. J.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lampis, A.Lancierini, D.Lane, J. J.Lane, R.Lanfranchi, G.Langenbruch, C.Langer, J.Lantwin, O.Latham, T.Lazzari, F.Le Gac, R.Lee, S. H.Lefevre, R.Leflat, A.Legotin, S.Leroy, O.Lesiak, T.Leverington, B.Li, H.Li, L.Li, P.Li, Y.Li, Z.Liang, X.Lin, T.Lindner, R.Lisovskyi, VLitvinov, R.Liu, G.Liu, H.Liu, S.Liu, X.Loi, A.Lomba Castro, J.Longstaff, ILopes, J. H.Loustau, G.Lovell, G. H.Lu, Y.Lucchesi, D.Luchuk, S.Martinez, M. LucioLukashenko, VLuo, Y.Lupato, A.Luppi, E.Lupton, O.Lusiani, A.Lyu, X.Ma, L.Ma, R.Maccolini, S.Machefert, F.Maciuc, F.Macko, VMackowiak, P.Maddrell-Mander, S.Madejczyk, O.Mohan, L. R. MadhanMaev, O.Maevskiy, A.Maisuzenko, D.Majewski, M. W.Malczewski, J. J.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Malygina, H.Manca, G.Mancinelli, G.Manera Escalero, R.Manuzzi, D.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Mariani, S.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Marshall, P. J.Martellotti, G.Martinazzoli, L.Martinelli, M.Martinez Santos, D.Martinez Vidal, F.Massafferri, A.Materok, M.Matev, R.Mathad, A.Mathe, Z.Matiunin, VMatteuzzi, C.Mattioli, K. R.Mauri, A.Maurice, E.Mauricio, J.Mazurek, M.McCann, M.Mcconnell, L.Mcgrath, T. H.McNab, A.McNulty, R.Mead, J., VMeadows, B.Meaux, C.Meier, G.Meinert, N.Melnychuk, D.Meloni, S.Merk, M.Merli, A.Garcia, L. MeyerMikhasenko, M.Milanes, D. A.Millard, E.Milovanovic, M.Minard, M-NMinzoni, L.Mitchell, S. E.Mitreska, B.Mitzel, D. S.Modden, A.Mohammed, R. A.Moise, R. D.Mombacher, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, G.Morello, M. J.Moron, J.Morris, A. B.Morris, A. G.Mountain, R.Mu, H.Muheim, F.Mukherjee, M.Mulder, M.Muller, D.Muller, K.Murphy, C. H.Murray, D.Muzzetto, P.Naik, P.Nakada, T.Nandakumar, R.Nanut, T.Nasteva, INeedham, M.Neri, INeubert, S.Neufeld, N.Newcombe, R.Nguyen, T. D.Nguyen-Mau, C.Niel, E. M.Nieswand, S.Nikitin, N.Nolte, N. S.Nunez, C.Oblakowska-Mucha, A.Obraztsov, VO'Hanlon, D. P.Oldeman, R.Olivares, M. E.Onderwater, C. J. G.Ossowska, A.Goicochea, J. M. OtaloraOvsiannikova, T.Owen, P.Oyanguren, A.Pagare, B.Pais, P. R.Pajero, T.Palano, A.Palutan, M.Pan, Y.Panshin, G.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Pappenheimer, C.Parker, W.Parkes, C.Parkinson, C. J.Passalacqua, B.Passaleva, G.Pastore, A.Patel, M.Patrignani, C.Pawley, C. J.Pearce, A.Pellegrino, A.Altarelli, M. PepePerazzini, S.Pereima, D.Perret, P.Petridis, K.Petrolini, A.Petrov, A.Petrucci, S.Petruzzo, M.Pham, T. T. H.Philippov, A.Pica, L.Piccini, M.Pietrzyk, B.Pietrzyk, G.Pili, M.Pinci, D.Pisani, F.Piucci, A.Resmi, P. K.Placinta, VPlews, J.Casasus, M. PloPolci, F.Lener, M. PoliPoliakova, M.Poluektov, A.Polukhina, N.Polyakov, IPolycarpo, E.Pomery, G. J.Ponce, S.Popov, D.Popov, S.Poslavskii, S.Prasanth, K.Promberger, L.Prouve, C.Pugatch, VPullen, H.Punzi, G.Qian, W.Qin, J.Quagliani, R.Quintana, B.Raab, N., VTrejo, R. I. RabadanRachwal, B.Rademacker, J. H.Rama, M.Pernas, M. RamosRangel, M. S.Ratnikov, F.Raven, G.Reboud, M.Redi, F.Reiss, F.Remon Alepuz, C.Ren, Z.Renaudin, VRibatti, R.Ricciardi, S.Rinnert, K.Robbe, P.Robert, A.Robertson, G.Rodrigues, A. B.Rodrigues, E.Rodriguez Lopez, J. A.Rollings, A.Roloff, P.Romanovskiy, VRomero Lamas, M.Romero Vidal, A.Roth, J. D.Rotondo, M.Rudolph, M. S.Ruf, T.Ruiz Vidal, J.Ryzhikov, A.Ryzka, J.Saborido Silva, J. J.Sagidova, N.Sahoo, N.Saitta, B.Sanchez Gonzalo, D.Gras, C. SanchezSantacesaria, R.Santamarina Rios, C.Santimaria, M.Santovetti, E.Saranin, D.Sarpis, G.Sarpis, M.Sarti, A.Satriano, C.Satta, A.Saur, M.Savrina, D.Sazak, H.Smead, L. G. ScantleburySchael, S.Schellenberg, M.Schiller, M.Schindler, H.Schmelling, M.Schmidt, B.Schneider, O.Schopper, A.Schubiger, M.Schulte, S.Schune, M. H.Schwemmer, R.Sciascia, B.Sciubba, A.Sellam, S.Semennikov, A.Soares, M. SenghiSergi, A.Serra, N.Sestini, L.Seuthe, A.Seyfert, P.Shangase, D. M.Shapkin, M.Shchemerov, IShchutska, L.Shears, T.Shekhtman, L.Shen, Z.Shevchenko, VShields, E. B.Shmanin, E.Shupperd, J. D.Siddi, B. G.Coutinho, R. SilvaSimi, G.Simone, S.Skiba, ISkidmore, N.Skwarnicki, T.Slater, M. W.Smallwood, J. C.Smeaton, J. G.Smetkina, A.Smith, E.Smith, M.Snoch, A.Soares, M.Lavra, L. SoaresSokoloff, M. D.Soler, F. J. P.Solovev, A.Solovyev, IDe Almeida, F. L. SouzaDe Paula, B. SouzaSpaan, B.Norella, E. SpadaroSpradlin, P.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Steinkamp, O.Stemmle, S.Stenyakin, O.Stevens, H.Stone, S.Stramaglia, M. E.Straticiuc, M.Strekalina, D.Strokov, S.Suljik, F.Sun, J.Sun, L.Sun, Y.Svihra, P.Swallow, P. N.Swientek, K.Szabelski, A.Szumlak, T.Szymanski, M.Taneja, S.Teubert, F.Thomas, E.Thomson, K. A.Tilley, M. J.Tisserand, VT'Jampens, S.Tobin, M.Tolk, S.Tomassetti, L.Machado, D. TorresTou, D. Y.Traill, M.Tran, M. T.Trifonova, E.Trippl, C.Tuci, G.Tully, A.Tuning, N.Ukleja, A.Unverzagt, D. J.Ursov, E.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valenti, G.Valls Canudas, N.van Beuzekom, M.Van Dijk, M.van Herwijnen, E.Van Hulse, C. B.van Veghel, M.Vazquez Gomez, R.Vazquez Regueiro, P.Vazquez Sierra, C.Vecchi, S.Velthuis, J. J.Veltri, M.Venkateswaran, A.Veronesi, M.Vesterinen, M.Vieira, D.Diaz, M. VieitesViemann, H.Vilasis-Cardona, X.Figueras, E. VilellaVincent, P.Vitali, G.Vollhardt, A.Vom Bruch, D.Vorobyev, A.Vorobyev, V.Voropaev, N.Waldi, R.Walsh, J.Wang, C.Wang, J.Wang, M.Wang, R.Wang, Y.Wang, Z.Wark, H. M.Watson, N. K.Weber, S. G.Websdale, D.Weisser, C.Westhenry, B. D. C.White, D. J.Whitehead, M.Wiedner, D.Wilkinson, G.Wilkinson, M.Williams, IWilliams, M.Williams, M. R. J.Wilson, F. F.Wislicki, W.Witek, M.Witola, L.Wormser, G.Wotton, S. A.Wu, H.Wyllie, K.Xiang, Z.Xiao, D.Xie, Y.Xu, A.Xu, J.Xu, L.Xu, M.Xu, Q.Xu, Z.Yang, D.Yang, S.Yang, Y.Yang, Z.Yao, Y.Yeomans, L. E.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zaffaroni, E.Zarebski, K. A.Zavertyaev, M.Zdybal, M.Zenaiev, O.Zeng, M.Zhang, D.Zhang, L.Zhang, S.Zhang, Y.Zhelezov, A.Zheng, Y.Zhou, X.Zhou, Y.Zhu, X.Zhukov, VZonneveld, J. B.Zucchelli, S.Zuliani, D.Zunica, G.2021-07-172021-07-172021-07-172021-07-1510.1016/j.scib.2021.02.030https://infoscience.epfl.ch/handle/20.500.14299/180134WOS:000668689800009First evidence of a structure in the J/psi Lambda invariant mass distribution is obtained from an amplitude analysis of Xi(-)(b) -> J/psi Lambda K- decays. The observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1r including systematic uncertainties and lookelsewhere effect. Its mass and width are determined to be 4458.8 +/- 2.9(-1.1)(+4.7) MeV and 17.3 +/- 6.5(-5.7)(+8.0) MeV, respectively, where the quoted uncertainties are statistical and systematic. The structure is also consistent with being due to two resonances. In addition, the narrow excited Xi(-) states, Xi(-)(1690) and Xi(-)(1820)(-), are seen for the first time in a Xi(-)(b) decay, and their masses and widths are measured with improved precision. The analysis is performed using pp collision data corresponding to a total integrated luminosity of 9 fb(-1), collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV. (c) 2021 Science China Press. Published by Elsevier B.V. and Science China Press. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Multidisciplinary SciencesScience & Technology - Other Topicsqcdexoticspentaquarkspectroscopyquarkoniumparticle and resonance productiontooltext::journal::journal article::research article