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Aaij, R, Abdelmotteleb, ASW, Abellan Beteta, C, Abudinén, F 
ORCID: 0000-0002-6737-3528, Ackernley, T, Adeva, B, Adinolfi, M, Adlarson, P ORCID: 0000-0001-6280-3851, Afsharnia, H, Agapopoulou, C et al (show 1063 more authors) , Aidala, CA, Ajaltouni, Z, Akar, S, Akiba, K, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Aliouche, Z, Alvarez Cartelle, P, Amalric, R, Amato, S, Amey, JL, Amhis, Y, An, L, Anderlini, L, Andersson, M, Andreianov, A, Andreotti, M, Andreou, D, Ao, D, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, JJ, Bailly-Reyre, A, Baladron Rodriguez, P, Balagura, V, Baldini, W, Baptista de Souza Leite, J, Barbetti, M, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, JM, Bassi, G, Batsukh, B, Battig, A, Bay, A, Beck, A, Becker, M, Bedeschi, F, Bediaga, IB, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Benane, G, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Bernet Andres, S, Berninghoff, D, Bernstein, HC, 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0000-0002-8516-237X, Cattaneo, M, Cavallero, G, Cavallini, V, Celani, S, Cerasoli, J, Cervenkov, D, Chadwick, AJ, Chapman, MG, Charles, M, Charpentier, Ph, Chavez Barajas, CA ORCID: 0000-0002-4602-8661, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chernyshenko, S, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Cid Vidal, X, Ciezarek, G, Ciullo, G, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Coco, V, Coelho, JAB, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Congedo, L, Contu, A, Cooke, N, Corredoira, I, Corti, G, Couturier, B, Craik, DC, Cruz Torres, M, Currie, R, Da Silva, CL, Dadabaev, S, Dai, L, Dai, X, Dall'Occo, E, Dalseno, J, D'Ambrosio, C, Daniel, J, Danilina, A, d'Argent, P, Davies, JE, Davis, A, De Aguiar Francisco, O, de Boer, J, De Bruyn, K, De Capua, S, De Cian, M, De Freitas Carneiro Da Graca, U ORCID: 0000-0003-0451-4028, De Lucia, E, De Miranda, JM, De Paula, L, De Serio, M, De Simone, D, 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Guittiere, M, Günther, PA, Gushchin, E, Guth, A, Guz, Y, Gys, T, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haimberger, J, Haines, SC, Halewood-Leagas, T, Halvorsen, MM, Hamilton, PM, Hammerich, J ORCID: 0000-0002-5556-1775, Han, Q, Han, X, Hansen, EB, Hansmann-Menzemer, S, Hao, L, Harnew, N, Harrison, T, Hasse, C, Hatch, M, He, J, Heijhoff, K, Henderson, C, Henderson, RDL, Hennequin, AM, Hennessy, K ORCID: 0000-0002-1529-8087, Henry, L, Herd, J, Heuel, J, Hicheur, A, Hill, D, Hilton, M, Hollitt, SE, Horswill, J, Hou, R, Hou, Y, Hu, J, Hu, J, Hu, W, Hu, X, Huang, W, Huang, X, Hulsbergen, W, Hunter, RJ, Hushchyn, M, Hutchcroft, D ORCID: 0000-0002-4174-6509, Ibis, P, Idzik, M, Ilin, D, Ilten, P, Inglessi, A, Iniukhin, A, Ishteev, A, Ivshin, K, Jacobsson, R, Jage, H, Jaimes Elles, SJ, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, E, Jiang, X, Jiang, Y, John, M, Johnson, D, Jones, CR, Jones, TP, Jost, B, Jurik, N, Juszczak, I, Kandybei, S, Kang, Y, Karacson, M, Karpenkov, D, Karpov, M, Kautz, JW, Keizer, F, Keller, DM, Kenzie, M, Ketel, T, Khanji, B, Kharisova, A, Kholodenko, S, Khreich, G, Kirn, T, Kirsebom, VS, Kitouni, O, Klaver, S, Kleijne, N, Klimaszewski, K, Kmiec, MR, Koliiev, S, Kondybayeva, A, Konoplyannikov, A, Kopciewicz, P, Kopecna, R, Koppenburg, P, Korolev, M, Kostiuk, I, Kot, O, Kotriakhova, S, Kozachuk, A, Kravchenko, P, Kravchuk, L, Krawczyk, RD, Kreps, M, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kubat, J, Kubis, S, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kupsc, A, Lacarrere, D, Lafferty, G, Lai, A, Lampis, A, Lancierini, D, Landesa Gomez, C, Lane, JJ, Lane, R, Lanfranchi, G, Langenbruch, C, Langer, J, Lantwin, O, Latham, T, Lazzari, F, Lazzaroni, M, Le Gac, R, Lee, SH, Lefèvre, R, Leflat, A, Legotin, S, Lenisa, P, Leroy, O, Lesiak, T, Leverington, B, Li, A, Li, H, Li, K, Li, P, Li, P-R, Li, S, Li, T, Li, T, Li, Y, Li, Z, Liang, X, Lin, C, Lin, T, Lindner, R, Lisovskyi, V, Litvinov, R, Liu, G, Liu, H, Liu, 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Resmi, PK, Ribatti, R, Ricci, AM, Ricciardi, S, Richardson, K, Richardson-Slipper, M, Rinnert, K, Robbe, P, Robertson, G, Rodrigues, AB, Rodrigues, E, Rodriguez Fernandez, E, Rodriguez Lopez, JA, Rodriguez Rodriguez, E, Rolf, DL, Rollings, A, Roloff, P, Romanovskiy, V, Romero Lamas, M, Romero Vidal, A, Roth, JD, Rotondo, M, Rudolph, MS, Ruf, T, Ruiz Fernandez, RA, Ruiz Vidal, J, Ryzhikov, A, Ryzka, J, Saborido Silva, JJ, Sagidova, N, Sahoo, N, Saitta, B, Salomoni, M, Sanchez Gras, C, Sanderswood, I, Santacesaria, 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, Scantlebury Smead, LG, Scarabotto, A, Schael, S, Scherl, S ORCID: 0000-0003-0528-2724, Schiller, M, Schindler, H, Schmelling, M, Schmidt, B, Schmitt, S, Schneider, O, Schopper, A, Schubiger, M, Schulte, S, Schune, MH, Schwemmer, R, Sciascia, B, Sciuccati, A, Sellam, S, Semennikov, A, Senghi Soares, M, Sergi, A, Serra, N, 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(2023)
Observation of a J/ψΛ Resonance Consistent with a Strange Pentaquark Candidate in B^{-}→J/ψΛp[over ¯] Decays.
Physical review letters, 131 (3).
031901-.
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Abstract
An amplitude analysis of B^{-}→J/ψΛp[over ¯] decays is performed using 4400 signal candidates selected on a data sample of pp collisions recorded at center-of-mass energies of 7, 8, and 13 TeV with the LHCb detector, corresponding to an integrated luminosity of 9 fb^{-1}. A narrow resonance in the J/ψΛ system, consistent with a pentaquark candidate with strangeness, is observed with high significance. The mass and the width of this new state are measured to be 4338.2±0.7±0.4 MeV and 7.0±1.2±1.3 MeV, where the first uncertainty is statistical and the second systematic. The spin is determined to be 1/2 and negative parity is preferred. Because of the small Q-value of the reaction, the most precise single measurement of the B^{-} mass to date, 5279.44±0.05±0.07 MeV, is obtained.
Dimensions
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