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Observation of a new baryon state in the Lambda(0)(b)pi(+)pi(-) mass spectrum
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 Aaij2020_Article_ObservationOfANewBaryonStateIn.pdf | Published version | 693.45 kB | Adobe PDF | View/Open |
| Title: | Observation of a new baryon state in the Lambda(0)(b)pi(+)pi(-) mass spectrum |
| Authors: | Aaij, R Beteta, CA Adeva, B Adinolfi, M Aidala, CA Ajaltouni, Z Akar, S Albicocco, P Albrecht, J Alessio, F Alexander, M Albero, AA Alkhazov, G Cartelle, PA Alves, AA Amato, S Amerio, S Amhis, Y An, L Anderlini, L Andreassi, G Andreotti, M Andrews, JE Archilli, F D'Argent, P Romeu, JA Artamonov, A Artuso, M Arzymatov, K Aslanides, E Atzeni, M Audurier, B Bachmann, S Back, JJ Baker, S Balagura, V Baldini, W Baranov, A Barlow, RJ Barrand, GC Barsuk, S Barter, W Bartolini, M Baryshnikov, F Batozskaya, V Batsukh, B Battig, A Battista, V Bay, A Beddow, J Bedeschi, F Bediaga, I Beiter, A Bel, LJ Belin, S Beliy, N Bellee, V Belloli, N Belous, K Belyaev, I Ben-Haim, E Bencivenni, G Benson, S Beranek, S Berezhnoy, A Bernet, R Berninghoff, D Bertholet, E Bertolin, A Betancourt, C Betti, F Bettler, MO Van Beuzekom, M Bezshyiko, I Bhasin, S Bhom, J Bifani, S Billoir, P Birnkraut, A Bizzeti, A Bjorn, M Blago, MP Blake, T Blanc, F Blusk, S Bobulska, D Bocci, V Boente Garcia, O Boettcher, T Bondar, A Bondar, N Borghi, S Borisyak, M Borsato, M Bossu, F Boubdir, M Bowcock, TJV Bozzi, C Braun, S Brodski, M Brodzicka, J Gonzalo, AB Brundu, D Buchanan, E Buonaura, A Burr, C Bursche, A Buytaert, J Byczynski, W Cadeddu, S Cai, H Calabrese, R Calladine, R Calvi, M Calvo Gomez, M Camboni, A Campana, P Perez, DHC Capriotti, L Carbone, A Carboni, G Cardinale, R Cardini, A Carniti, P Carvalho Akiba, K Casse, G Cassina, L Cattaneo, M Cavallero, G Cenci, R Chamont, D Chapman, MG Charles, M Charpentier, P Chatzikonstantinidis, G Chefdeville, M Chekalina, V Chen, C Chen, S Chitic, S-G Chobanova, V Chrzaszcz, M Chubykin, A Ciambrone, P Cid Vidal, X Ciezarek, G Cindolo, F Clarke, PEL Clemencic, M Cliff, HV Closier, J Coco, V Coelho, JAB Cogan, J Cogneras, E Cojocariu, L Collins, P Colombo, T Comerma-Montells, A Contu, A Coombs, G Coquereau, S Corti, G Corvo, M Sobral, CMC Couturier, B Cowan, GA Craik, DC Crocombe, A Cruz Torres, M Currie, R D'Ambrosio, C Da Cunha Marinho, F Da Silva, CL Dall'Occo, E Dalseno, J Danilina, A Davis, A Francisco, ODA De Bruyn, K De Capua, S De Cian, M De Miranda, JM De Paula, L De Serio, M De Simone, P Dean, CT Decamp, D Del Buono, L Delaney, B Dembinski, H-P Demmer, M Dendek, A Derkach, D Deschamps, O Desse, F Dettori, F Dey, B Di Canto, A Di Nezza, P Didenko, S Dijkstra, H Dordei, F Dorigo, M Dosil Suarez, A Douglas, L Dovbnya, A Dreimanis, K Dufour, L Dujany, G Durante, P Durham, JM Dutta, D Dzhelyadin, R Dziewiecki, M Dziurda, A Dzyuba, A Easo, S Egede, U Egorychev, V Eidelman, S Eisenhardt, S Eitschberger, U Ekelhof, R Eklund, L Ely, S Ene, A Escher, S Esen, S Evans, T Falabella, A Farley, N Farry, S Fazzini, D Declara, PF Fernandez Prieto, A Ferrari, F Lopes, LF Ferreira Rodrigues, F Ferro-Luzzi, M Filippov, S Fini, RA Fiorini, M Firlej, M Fitzpatrick, C Fiutowski, T Fleuret, F Fontana, M Fontanelli, F Forty, R Lima, VF Frank, M Frei, C Fu, J Funk, W Farber, C Feo, M Gabriel, E Gallas Torreira, A Galli, D Gallorini, S Gambetta, S Gan, Y Gandelman, M Gandini, P Gao, Y Garcia Martin, LM Garcia Plana, B Pardinas, JG Tico, JG Garrido, L Gascon, D Gaspar, C Gavardi, L Gazzoni, G Gerick, D Gersabeck, E Gersabeck, M Gershon, T Gerstel, D Ghez, P Gibson, V Girard, OG Gironella Gironell, P Giubega, L Gizdov, K Gligorov, VV Golubkov, D Golutvin, A Gomes, A Gorelov, IV Gotti, C Govorkova, E Grabowski, JP Graciani Diaz, R Cardoso, LAG Grauges, E Graverini, E Graziani, G Grecu, A Greim, R Griffith, P Grillo, L Gruber, L Cazon, BRG Gruenberg, O Gu, C Gushchin, E Guth, A Guz, Y Gys, T Gobel, C Hadavizadeh, T Hadjivasiliou, C Haefeli, G Haen, C Haines, SC Hamilton, B Han, X Hancock, TH Hansmann-Menzemer, S Harnew, N Harrison, T Hasse, C Hatch, M He, J Hecker, M Heinicke, K Heister, A Hennessy, K Henry, L Van Herwijnen, E Heuel, J Hess, M Hicheur, A Charman, RH Hill, D Hilton, M Hopchev, PH Hu, J Hu, W Huang, W Huard, ZC Hulsbergen, W Humair, T Hushchyn, M Hutchcroft, D Hynds, D Ibis, P Idzik, M Ilten, P Inglessi, A Inyakin, A Ivshin, K Jacobsson, R Jalocha, J Jans, E Jashal, BK Jawahery, A Jiang, F John, M Johnson, D Jones, CR Joram, C Jost, B Jurik, N Kandybei, S Karacson, M Kariuki, JM Karodia, S Kazeev, N Kecke, M Keizer, F Kelsey, M Kenzie, M Ketel, T Khairullin, E Khanji, B Khurewathanakul, C Kim, KE Kirn, T Kirsebom, VS Klaver, S Klimaszewski, K Klimkovich, T Koliiev, S Kolpin, M Kopecna, R Koppenburg, P Kostiuk, I Kotriakhova, S Kozeiha, M Kravchuk, L Kreps, M Kress, F Krokovny, P Krupa, W Krzemien, W Kucewicz, W Kucharczyk, M Kudryavtsev, V Kuonen, AK Kvaratskheliya, T Lacarrere, D Lafferty, G Lai, A Lancierini, D Lanfranchi, G Langenbruch, C Latham, T Lazzeroni, C Le Gac, R At, L Lefevre, R Lemaitre, F Leroy, O Lesiak, T Leverington, B Li, P-R Li, Y Li, Z Liang, X Likhomanenko, T Lindner, R Lionetto, F Lisovskyi, V Liu, G Liu, X Loh, D Loi, A Longstaff, I Lopes, JH Lovell, GH Lucchesi, D Lucio Martinez, M Lupato, A Luppi, E Lupton, O Lusiani, A Lyu, X Machefert, F Maciuc, F Macko, V Mackowiak, P Maddrell-Mander, S Maev, O Maguire, K Maisuzenko, D Majewski, MW Malde, S Malecki, B Malinin, A Maltsev, T Manca, G Mancinelli, G Marangotto, D Maratas, J Marchand, JF Marconi, U Benito, CM Marinangeli, M Marino, P Marks, J Marshall, PJ Martellotti, G Martinelli, M Martinez Santos, D Martinez Vidal, F Massafferri, A Materok, M Matev, R Mathad, A Mathe, Z Matteuzzi, C Mauri, A Maurice, E Maurin, B McCann, M Mcnab, A McNulty, R Mead, JV Meadows, B Meaux, C Meinert, N Melnychuk, D Merk, M Merli, A Michielin, E Milanes, DA Millard, E Minard, M-N Minzoni, L Mitzel, DS Mogini, A Moise, RD Mombaecher, T Monroy, IA Monteil, S Morandin, M Morello, G Morello, MJ Morgunova, O Moron, J Morris, AB Mountain, R Muheim, F Mukherjee, M Mulder, M Murphy, CH Murray, D Moedden, A Mueller, D Mueller, J Mueller, K Mueller, V Naik, P Nakada, T Nandakumar, R Nandi, A Nanut, T Nasteva, I Needham, M Neri, N Neubert, S Neufeld, N Newcombe, R Nguyen, TD Nguyen-Mau, C Nieswand, S Niet, R Nikitin, N Nogay, A Nolte, NS O'Hanlon, DP Oblakowska-Mucha, A Obraztsov, V Oldeman, R Onderwater, CJG Ossowska, A Otalora Goicochea, JM Ovsiannikova, T Owen, P Oyanguren, A Pais, PR Pajero, T Palano, A Palutan, M Panshin, G Papanestis, A Pappagallo, M Pappalardo, LL Parker, W Parkes, C Passaleva, G Pastore, A Patel, M Patrignani, C Pearce, A Pellegrino, A Penso, G Altarelli, MP Perazzini, S Pereima, D Perret, P Pescatore, L Petridis, K Petrolini, A Petrov, A Petrucci, S Petruzzo, M Pietrzyk, B Pietrzyk, G Pikies, M Pili, M Pinci, D Pinzino, J Pisani, F Piucci, A Placinta, V Playfer, S Plews, J Plo Casasus, M Polci, F Lener, MP Poluektov, A Polukhina, N Polyakov, I Polycarpo, E Pomery, GJ Ponce, S Popov, A Popov, D Poslavskii, S Price, E Prisciandaro, J Prouve, C Pugatch, V Navarro, AP Pullen, H Punzi, G Qian, W Qin, J Quagliani, R Quintana, B Raab, NV Rachwal, B Rademacker, JH Rama, M Ramos Pernas, M Rangel, MS Ratnikov, F Raven, G Salzgeber, MR Reboud, M Redi, F Reichert, S Dos Reis, AC Reiss, F Remon Alepuz, C Ren, Z Renaudin, V Ricciardi, S Richards, S Rinnert, K Robbe, P Robert, A Rodrigues, AB Rodrigues, E Rodriguez Lopez, JA Roehrken, M Roiser, S Rollings, A Romanovskiy, V Romero Vidal, A Rotondo, M Rudolph, MS Ruf, T Ruiz Vidal, J Saborido Silva, JJ Sagidova, N Saitta, B Salustino Guimaraes, V Gras, CS Sanchez Mayordomo, C Sanmartin Sedes, B Santacesaria, R Santamarina Rios, C Santimaria, M Santovetti, E Sarpis, G Sarti, A Satriano, C Satta, A Saur, M Savrina, D Schael, S Schellenberg, M Schiller, M Schindler, H Schmelling, M Schmelzer, T Schmidt, B Schneider, O Schopper, A Schreiner, HF Schubiger, M Schulte, S Schune, MH Schwemmer, R Sciascia, B Sciubba, A Semennikov, A Sepulveda, ES Sergi, A Serra, N Serrano, J Sestini, L Seuthe, A Seyfert, P Shapkin, M Shcheglov, Y Shears, T Shekhtman, L Shevchenko, V Shmanin, E Siddi, BG Coutinho, RS Silva de Oliveira, L Simi, G Simone, S Skiba, I Skidmore, N Skwarnicki, T Slater, MW Smeaton, JG Smith, E Smith, IT Smith, M Soares, M Soares Lavra, L Sokoloff, MD Soler, FJP Souza De Paula, B Spaan, B Norella, ES Spradlin, P Stagni, F Stahl, M Stahl, S Stefko, P Stefkova, S Steinkamp, O Stemmle, S Stenyakin, O Stepanova, M Stevens, H Stocchi, A Stone, S Storaci, B Stracka, S Stramaglia, ME Straticiuc, M Straumann, U Strokov, S Sun, J Sun, L Sun, Y Swientek, K Szabelski, A Szumlak, T Szymanski, M T'Jampens, S Tang, Z Tayduganov, A Tekampe, T Tellarini, G Teubert, F Thomas, E Van Tilburg, J Tilley, MJ Tisserand, V Tobin, M Tolk, S Tomassetti, L Tonelli, D Tou, DY Tourinho Jadallah Aoude, R Tournefier, E Traill, M Tran, MT Trisovic, A Tsaregorodtsev, A Tuci, G Tully, A Tuning, N Ukleja, A Usachov, A Ustyuzhanin, A Uwer, U Vagner, A Vagnoni, V Valassi, A Valat, S Valenti, G Gomez, RV Vazquez Regueiro, P Vecchi, S Van Veghel, M Velthuis, JJ Veltri, M Veneziano, G Venkateswaran, A Vernet, M Veronesi, M Vesterinen, M Barbosa, JVV Vieira, D Vieites Diaz, M Viemann, H Vilasis-Cardona, X Vitkovskiy, A Vitti, M Volkov, V Vollhardt, A Bruch, DV Voneki, B Vorobyev, A Vorobyev, V Voropaev, N De Vries, JA Sierra, CV Waldi, R Walsh, J Wang, J Wang, M Wang, Y Wang, Z Ward, DR Wark, HM Watson, NK Websdale, D Weiden, A Weisser, C Whitehead, M Wilkinson, G Wilkinson, M Williams, I Williams, MRJ Williams, M Williams, T Wilson, FF Winn, M Wislicki, W Witek, M Wormser, G Wotton, SA Wyllie, K Xiao, D Xie, Y Xu, A Xu, M Xu, Q Xu, Z Xu, Z Yang, Z Yang, Z Yao, Y Yeomans, LE Yin, H Yu, J Yuan, X Yushchenko, O Zarebski, KA Zavertyaev, M Zhang, D Zhang, L Zhang, WC Zhang, Y Zhelezov, A Zheng, Y Zhu, X Zhukov, V Zonneveld, JB Zucchelli, S |
| Item Type: | Journal Article |
| Abstract: | A new baryon state is observed in the Λ0bπ+π− mass spectrum with high significance using a data sample of pp collisions, collected with the LHCb detector at centre-of-mass energies s√ = 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The mass and natural width of the new state are measured to be m=6072.3±2.9±0.6±0.2 MeV,Γ=72±11±2 MeV, where the first uncertainty is statistical and the second systematic. The third uncertainty for the mass is due to imprecise knowledge of the Λ0b baryon mass. The new state is consistent with the first radial excitation of the Λ0b baryon, the Λb(2S)0 resonance. Updated measurements of the masses and the upper limits on the natural widths of the previously observed Λb(5912)0 and Λb(5920)0 states are also reported. |
| Issue Date: | 23-Jun-2020 |
| Date of Acceptance: | 1-Jun-2020 |
| URI: | http://hdl.handle.net/10044/1/81108 |
| DOI: | 10.1007/JHEP06(2020)136 |
| ISSN: | 1029-8479 |
| Publisher: | IOP Publishing |
| Journal / Book Title: | The Journal of High Energy Physics |
| Volume: | 2020 |
| Issue: | 6 |
| Copyright Statement: | ©2020 CERN for the benefit of the LHCb collaboration. This article is distributed under the terms of the Creative CommonsAttribution License (CC-BY 4.0), which permits any use, distribution and reproduction inany medium, provided the original author(s) and source are credited. |
| Keywords: | Science & Technology Physical Sciences Physics, Particles & Fields Physics B physics Hadron-Hadron scattering (experiments) Heavy quark production Spectroscopy DECAY MODEL TOOL Science & Technology Physical Sciences Physics, Particles & Fields Physics B physics Hadron-Hadron scattering (experiments) Heavy quark production Spectroscopy DECAY MODEL TOOL hep-ex hep-ex 0105 Mathematical Physics 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics 0206 Quantum Physics Nuclear & Particles Physics |
| Publication Status: | Published |
| Article Number: | ARTN 136 |
| Appears in Collections: | Physics High Energy Physics |
This item is licensed under a Creative Commons License
