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Observation of a new baryon state in the Lambda(0)(b)pi(+)pi(-) mass spectrum

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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
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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
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Obraztsov, V
Oldeman, R
Onderwater, CJG
Ossowska, A
Otalora Goicochea, JM
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Altarelli, MP
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Vollhardt, A
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Vorobyev, V
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De Vries, JA
Sierra, CV
Waldi, R
Walsh, J
Wang, J
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Wang, Y
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Ward, DR
Wark, HM
Watson, NK
Websdale, D
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Wotton, SA
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Xie, Y
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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
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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



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