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Measurement of the ηc(1S) production cross-section in p p collisions at s√=13 TeV

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Title: Measurement of the ηc(1S) production cross-section in p p collisions at s√=13 TeV
Authors: Aaij, R
Beteta, CA
Ackernley, T
Adeva, B
Adinolfi, M
Afsharnia, H
Aidala, CA
Aiola, S
Ajaltouni, Z
Akar, S
Albicocco, P
Albrecht, J
Alessio, F
Alexander, M
Albero, AA
Alkhazov, G
Cartelle, PA
Alves, AA
Amato, S
Amhis, Y
An, L
Anderlini, L
Andreassi, G
Andreotti, M
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
Barsuk, S
Barter, W
Bartolini, M
Baryshnikov, F
Bassi, G
Batozskaya, V
Batsukh, B
Battig, A
Battista, V
Bay, A
Becker, M
Bedeschi, F
Bediaga, I
Beiter, A
Bel, LJ
Belavin, V
Belin, S
Beliy, N
Bellee, V
Belous, K
Belyaev, I
Ben-Haim, E
Bencivenni, G
Benson, S
Beranek, S
Berezhnoy, A
Bernet, R
Berninghoff, D
Bernstein, HC
Bertholet, E
Bertolin, A
Betancourt, C
Betti, F
Bettler, MO
Beuzekom, MV
Bezshyiko, I
Bhasin, S
Bhom, J
Bieker, MS
Bifani, S
Billoir, P
Birnkraut, A
Bizzeti, A
Bjørn, M
Blago, MP
Blake, T
Blanc, F
Blusk, S
Bobulska, D
Bocci, V
Garcia, OB
Boettcher, T
Boldyrev, A
Bondar, A
Bondar, N
Borghi, S
Borisyak, M
Borsato, M
Borsuk, JT
Boubdir, M
Bowcock, TJV
Bozzi, C
Braun, S
Rodriguez, AB
Brodski, M
Brodzicka, J
Gonzalo, AB
Brundu, D
Buchanan, E
Buonaura, A
Burr, C
Bursche, A
Butter, JS
Buytaert, J
Byczynski, W
Cadeddu, S
Cai, H
Calabrese, R
Cali, S
Calladine, R
Calvi, M
Gomez, MC
Camboni, A
Campana, P
Perez, DHC
Capriotti, L
Carbone, A
Carboni, G
Cardinale, R
Cardini, A
Carniti, P
Akiba, KC
Vidal, AC
Casse, G
Cattaneo, M
Cavallero, G
Cenci, R
Cerasoli, J
Chapman, MG
Charles, M
Charpentier, P
Chatzikonstantinidis, G
Chefdeville, M
Chekalina, V
Chen, C
Chen, S
Chernov, A
Chitic, S-G
Chobanova, V
Chrzaszcz, M
Chubykin, A
Ciambrone, P
Cicala, MF
Vidal, XC
Ciezarek, G
Cindolo, F
Clarke, PEL
Clemencic, M
Cliff, HV
Closier, J
Cobbledick, JL
Coco, V
Coelho, JAB
Cogan, J
Cogneras, E
Cojocariu, L
Collins, P
Colombo, T
Comerma-Montells, A
Contu, A
Cooke, N
Coombs, G
Coquereau, S
Corti, G
Sobral, CMC
Couturier, B
Cowan, GA
Craik, DC
Crocombe, A
Torres, MC
Currie, R
D’Ambrosio, C
Da Silva, CL
Dall’Occo, E
Dalseno, J
Danilina, A
Davis, A
De Aguiar Francisco, O
De Bruyn, K
De Capua, S
De Cian, M
De Miranda, JM
De Paula, L
De Serio, M
De Simone, P
Dean, CT
Dean, W
Decamp, D
Buono, LD
Delaney, B
Dembinski, H-P
Demmer, M
Dendek, A
Denysenko, V
Derkach, D
Deschamps, O
Desse, F
Dettori, F
Dey, B
Canto, AD
Nezza, PD
Didenko, S
Dijkstra, H
Dordei, F
Dorigo, M
Suárez, AD
Douglas, L
Dovbnya, A
Dreimanis, K
Dudek, MW
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
Ek-In, S
Ekelhof, R
Eklund, L
Ely, S
Ene, A
Escher, S
Esen, S
Evans, T
Falabella, A
Fan, J
Farley, N
Farry, S
Fazzini, D
Declara, PF
Prieto, AF
Ferrari, F
Lopes, LF
Rodrigues, FF
Sole, SF
Ferro-Luzzi, M
Filippov, S
Fini, RA
Fiorini, M
Firlej, M
Fischer, KM
Fitzpatrick, C
Fiutowski, T
Fleuret, F
Fontana, M
Fontanelli, F
Forty, R
Lima, VF
Sevilla, MF
Frank, M
Frei, C
Friday, DA
Fu, J
Funk, W
Féo, M
Gabriel, E
Torreira, AG
Galli, D
Gallorini, S
Gambetta, S
Gan, Y
Gandelman, M
Gandini, P
Gao, Y
Martin, LMG
Plana, BG
Rosales, FAG
Pardiñas, JG
Tico, JG
Garrido, L
Gascon, D
Gaspar, C
Gazzoni, G
Gerick, D
Gersabeck, E
Gersabeck, M
Gershon, T
Gerstel, D
Ghez, P
Gibson, V
Gioventù, A
Girard, OG
Gironell, PG
Giubega, L
Giugliano, C
Gizdov, K
Gligorov, VV
Golubkov, D
Golutvin, A
Gomes, A
Gorelov, IV
Gotti, C
Govorkova, E
Grabowski, JP
Diaz, RG
Grammatico, T
Cardoso, LAG
Graugés, E
Graverini, E
Graziani, G
Grecu, A
Greim, R
Griffith, P
Grillo, L
Gruber, L
Cazon, BRG
Gu, C
Guo, X
Gushchin, E
Guth, A
Guz, Y
Gys, T
Göbel, C
Hadavizadeh, T
Hadjivasiliou, C
Haefeli, G
Haen, C
Haines, SC
Hamilton, PM
Han, Q
Han, X
Hancock, TH
Hansmann-Menzemer, S
Harnew, N
Harrison, T
Hart, R
Hasse, C
Hatch, M
He, J
Hecker, M
Heijhoff, K
Heinicke, K
Heister, A
Hennequin, AM
Hennessy, K
Henry, L
Herwijnen, EV
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
Hunter, RJ
Hushchyn, M
Hutchcroft, D
Hynds, D
Ibis, P
Idzik, M
Ilten, P
Inglessi, A
Inyakin, A
Ivshin, K
Jacobsson, R
Jakobsen, S
Jalocha, J
Jans, E
Jashal, BK
Jawahery, A
Jevtic, V
Jiang, F
John, M
Johnson, D
Jones, CR
Jost, B
Jurik, N
Kandybei, S
Karacson, M
Kariuki, JM
Karodia, S
Kazeev, N
Kecke, M
Keizer, F
Kelsey, M
Kenzie, M
Ketel, T
Khanji, B
Kharisova, A
Khurewathanakul, C
Kim, KE
Kirn, T
Kirsebom, VS
Klaver, S
Klimaszewski, K
Koliiev, S
Kondybayeva, A
Konoplyannikov, A
Kopciewicz, P
Kopecna, R
Koppenburg, P
Kostiuk, I
Kot, O
Kotriakhova, S
Kozeiha, M
Kravchuk, L
Krawczyk, RD
Kreps, M
Kress, F
Kretzschmar, S
Krokovny, P
Krupa, W
Krzemien, W
Kucewicz, W
Kucharczyk, M
Kudryavtsev, V
Kuindersma, HS
Kunde, GJ
Kuonen, AK
Kvaratskheliya, T
Lacarrere, D
Lafferty, G
Lai, A
Lancierini, D
Lane, JJ
Lanfranchi, G
Langenbruch, C
Latham, T
Lazzari, F
Lazzeroni, C
Gac, RL
Leflat, A
Lefèvre, R
Lemaitre, F
Leroy, O
Lesiak, T
Leverington, B
Li, H
Li, P-R
Li, X
Li, Y
Li, Z
Liang, X
Lindner, R
Ling, P
Lionetto, F
Lisovskyi, V
Liu, G
Liu, X
Loh, D
Loi, A
Castro, JL
Longstaff, I
Lopes, JH
Loustau, G
Lovell, GH
Lucchesi, D
Martinez, ML
Luo, Y
Lupato, A
Luppi, E
Lupton, O
Lusiani, A
Lyu, X
Ma, R
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Macko, V
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Mohan, LRM
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Malecki, B
Malinin, A
Maltsev, T
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Benito, CM
Marinangeli, M
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Marshall, PJ
Martellotti, G
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Santos, DM
Vidal, FM
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Item Type: Journal Article
Abstract: Using a data sample corresponding to an integrated luminosity of 2.0 fb−1, collected by the LHCb experiment, the production of the ηc(1S) state in proton–proton collisions at a centre-of-mass energy of s√=13 TeV is studied in the rapidity range 2.0<y<4.5 and in the transverse momentum range 6.5<pT<14.0GeV. The cross-section for prompt production of ηc(1S) mesons relative to that of the J/ψ meson is measured using the p p¯¯¯ decay mode and is found to be σηc(1S)/σJ/ψ=1.69±0.15±0.10±0.18. The quoted uncertainties are, in order, statistical, systematic and due to uncertainties on the branching fractions of the J/ψ→pp¯¯¯ and ηc→pp¯¯¯ decays. The prompt ηc(1S) production cross-section is determined to be σηc(1S)=1.26±0.11±0.08±0.14μb, where the last uncertainty includes that on the J/ψ meson cross-section. The ratio of the branching fractions of b-hadron decays to the ηc(1S) and J/ψ states is measured to be Bb→ηcX/Bb→J/ψX=0.48±0.03±0.03±0.05, where the last uncertainty is due to those on the branching fractions of the J/ψ→pp¯¯¯ and ηc→pp¯¯¯ decays. The difference between the J/ψ and ηc(1S) masses is also determined to be 113.0±0.7±0.1MeV, which is the most precise single measurement of this quantity to date.
Issue Date: Mar-2020
Date of Acceptance: 9-Feb-2020
URI: http://hdl.handle.net/10044/1/80051
DOI: 10.1140/epjc/s10052-020-7733-0
ISSN: 1434-6044
Publisher: Springer Science and Business Media LLC
Start Page: 1
End Page: 18
Journal / Book Title: The European Physical Journal C
Volume: 80
Issue: 3
Copyright Statement: © CERN for the benefit of the LHCb collaboration 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecomm ons.org/licenses/by/4.0/. Funded by SCOAP3.
Keywords: 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0206 Quantum Physics
Nuclear & Particles Physics
Publication Status: Published
Open Access location: https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-020-7733-0
Article Number: 191
Online Publication Date: 2020-03-02
Appears in Collections:Physics
High Energy Physics