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Evidence of a $J/\psi\Lambda$ structure and observation of excited $\Xi^-$ states in the $\Xi^-_b \to J/\psi\Lambda K^-$ decay

التفاصيل البيبلوغرافية
العنوان: Evidence of a $J/\psi\Lambda$ structure and observation of excited $\Xi^-$ states in the $\Xi^-_b \to J/\psi\Lambda K^-$ decay
المؤلفون: LHCb collaboration, Aaij, R., Beteta, C. Abellán, Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C. A., Aiola, S., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Albero, A. Alfonso, Aliouche, Z., Alkhazov, G., Cartelle, P. Alvarez, Amato, 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., Rodriguez, P. Baladron, Balagura, V., Baldini, W., Leite, J. Baptista, Barlow, 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, I., Beiter, A., Belavin, V., Belin, S., Bellee, V., Belous, K., Belov, I., Belyaev, I., Bencivenni, G., Ben-Haim, E., Berezhnoy, A., Bernet, R., Berninghoff, D., Bernstein, H. C., Bertella, C., Bertholet, E., Bertolin, A., Betancourt, C., Betti, F., Bezshyiko, Ia., Bhasin, S., Bhom, J., Bian, L., Bieker, M. S., Bifani, S., Billoir, P., Birch, M., Bishop, F. C. R., Bizzeti, A., Bjørn, M., Blago, M. P., Blake, T., Blanc, F., Blusk, S., Bobulska, D., Boelhauve, J. A., Garcia, O. Boente, Boettcher, T., Boldyrev, A., Bondar, A., Bondar, N., Borghi, S., Borisyak, M., Borsato, M., Borsuk, J. T., Bouchiba, S. A., Bowcock, T. J. V., Boyer, A., Bozzi, C., Bradley, M. J., Braun, S., Rodriguez, A. Brea, Brodski, M., Brodzicka, J., Gonzalo, A. Brossa, Brundu, 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. Calero, Cali, S., Calladine, R., Calvi, M., Gomez, M. Calvo, Magalhaes, P. Camargo, Camboni, A., Campana, P., Quezada, A. F. Campoverde, Capelli, S., Capriotti, L., Carbone, A., Carboni, G., Cardinale, R., Cardini, A., Carli, I., Carniti, P., Carus, L., Akiba, K. Carvalho, Vidal, A. Casais, Casse, G., Cattaneo, M., Cavallero, G., Celani, S., Cerasoli, J., Chadwick, A. J., Chapman, M. G., Charles, M., Charpentier, Ph., Chatzikonstantinidis, G., Barajas, C. A. Chavez, Chefdeville, M., Chen, C., Chen, S., Chernov, A., Chitic, S. -G., Chobanova, V., Cholak, S., Chrzaszcz, M., Chubykin, A., Chulikov, V., Ciambrone, P., Cicala, M. F., Vidal, X. Cid, Ciezarek, G., Clarke, P. E. L., Clemencic, M., Cliff, H. V., Closier, J., Cobbledick, J. L., Coco, V., Coelho, 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. Costa, Couturier, B., Craik, D. C., Crkovská, J., Torres, M. Cruz, Currie, R., Da Silva, C. L., Dall'Occo, E., Dalseno, J., D'Ambrosio, C., Danilina, A., d'Argent, P., Davis, A., Francisco, O. De Aguiar, De 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. -P., Dendek, A., Denysenko, V., Derkach, D., Deschamps, O., Desse, F., Dettori, F., Dey, B., Di Nezza, P., Didenko, S., Maronas, L. Dieste, Dijkstra, H., Dobishuk, V., Donohoe, A. M., Dordei, F., Reis, A. C. dos, Douglas, L., Dovbnya, A., Downes, A. G., Dreimanis, K., Dudek, M. W., Dufour, L., Duk, V., Durante, P., Durham, J. M., Dutta, D., Dziewiecki, M., Dziurda, A., Dzyuba, A., Easo, S., Egede, U., Egorychev, V., Eidelman, 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., Féo, M., Declara, P. Fernandez, Prieto, A. Fernandez, Arribas, J. M. Fernandez-tenllado, Ferrari, F., Lopes, L. Ferreira, Rodrigues, F. 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المساهمون: Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), LHCb, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
المصدر: Science bulletin 66(13), 1278-1287 (2021). doi:10.1016/j.scib.2021.02.030
INSPIRE-HEP
Sci.Bull.
Sci.Bull., 2021, 66, pp.1391. ⟨10.1016/j.scib.2021.02.030⟩
Sci.Bull., 2021, 66, pp.1278-1287. ⟨10.1016/j.scib.2021.02.030⟩
بيانات النشر: Science China Press, 2021.
سنة النشر: 2021
مصطلحات موضوعية: J/psi(3100), Exotics, mass spectrum: (J/psi(3100) Lambda K-), Xi(1820), (J/psi(3100) Lambda K-) [mass spectrum], 13000 GeV-cms, Quarkonium, Xi(1690), High Energy Physics - Experiment, mass spectrum, mass: width, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], scattering [p p], excited state [Xi-], Xi/b-: hadronic decay, Xi/b- --> J/psi(3100) Lambda K, Spectroscopy, pentaquark, 8000 GeV-cms, Lambda, Xi-: excited state, statistical [error], K-, decay, amplitude analysis, error: statistical, intermediate state, CERN LHC Coll, 7000 GeV-cms, ddc:500, colliding beams [p p], Particle Physics - Experiment, p p: scattering, data analysis method, charmonium, production [resonance], Particle and resonance production, width [mass], hadronic decay [Xi/b-], strangeness, statistical analysis, Xi/b, quantum chromodynamics, resonance, production, TeV, structure, K-: decay, decay [K-], LHC-B, QCD, Pentaquark, High Energy Physics::Experiment, p p: colliding beams, statistical, resonance: production, experimental results
الوصف: First evidence of a structure in the $J/\psi \varLambda$ invariant mass distribution is obtained from an amplitude analysis of $\varXi_b^- \to J/\psi \varLambda K^-$ decays. The observed structure is consistent with being due to a charmonium pentaquark with strangeness. Its mass and width are determined to be $4458.8\pm2.9\,^{+4.7}_{-1.1}$MeV and $17.3\pm6.5\,^{+8.0}_{-5.7}$MeV, where the quoted uncertainties are statistical and systematic, respectively. The structure is also consistent with being due to two resonances. In addition, the narrow excited $\varXi^-$ states, $\varXi(1690)^-$ and $\varXi(1820)^-$, are seen for the first time in a $\varXi_b^-$ 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 9fb$^{-1}$, collected with the LHCb experiment at centre-of-mass energies of $7$, $8$ and $13$TeV.
Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-039.htmlTest (LHCb public pages)
اللغة: English
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=arXiv_dedup_::6e24b9a302bfe6f81fda65d86e48098aTest
https://publications.rwth-aachen.de/record/822626Test
حقوق: OPEN
رقم الانضمام: edsair.arXiv.dedup...6e24b9a302bfe6f81fda65d86e48098a
قاعدة البيانات: OpenAIRE
الوصف
الوصف غير متاح.