Measurement of the relative rate of prompt χ  c0, χ  c1 and χ  c2 production at $ \sqrt{s}=7 $ TeV

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Oct 2013 Spain, United Kingdom, Spain, Italy, Italy, Italy, Italy, Italy, Italy, United Kingdom, Italy, Italy, Netherlands, Netherlands, Italy, United Kingdom, Italy, Italy, France, Italy, Italy English Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,013 (eissn: 1029-8479,

Copyright policy )Publicly fundedFunded by:SNSF | High Precision CP Violati...

Authors: Aaij, R.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; +193 Authors

Aaij, R.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Cartelle, P.; Alves, A.; Amato, S.; Amerio, S.; Amhis, Y.; Anderlini, L.; Anderson, J.; Andreassen, R.; Andrews, J.; Appleby, R.; Gutierrez, O.; Archilli, F.; Artamonov, A.; Artuso, M.; Aslanides, E.; Auriemma, G.; Baalouch, M.; Bachmann, S.; Back, J.; Baesso, C.; Balagura, V.; Baldini, W.; Barlow, R.; Barschel, C.; Barsuk, S.; Barter, W.; Bauer, T.; Bay, A.; Beddow, J.; Bedeschi, F.; Bediaga, I.; Belogurov, S.; Belous, K.; Belyaev, I.; Ben-Haim, E.; Bencivenni, G.; Benson, S.; Benton, J.; Berezhnoy, A.; Bernet, R.; Bettler, M.; van Beuzekom, M.; Bien, A.; Bifani, S.; Bird, T.; Bizzeti, A.; Bjørnstad, P.; Blake, T.; Blanc, F.; Blouw, J.; Blusk, S.; Bocci, V.; Bondar, A.; Bondar, N.; Bonivento, W.; Borghi, S.; Borgia, A.; Bowcock, T.; Bowen, E.; Bozzi, C.; Brambach, T.; van den Brand, J.; Bressieux, J.; Brett, D.; Britsch, M.; Britton, T.; Brook, N.; Brown, H.; Burducea, I.; Bursche, A.; Busetto, G.; Buytaert, J.; Cadeddu, S.; Callot, O.; Calvi, M.; Gomez, M.; Camboni, A.; Campana, P.; Perez, D.; Carbone, A.; Carboni, G.; Cardinale, R.; Cardini, A.; Carranza-Mejia, H.; Carson, L.; Akiba, K.; Casse, G.; Garcia, L.; Cattaneo, M.; Cauet, C.; Cenci, R.; Charles, M.; Charpentier, P.; Chen, P.; Chiapolini, N.; Chrzaszcz, M.; Ciba, K.; Vidal, X.; Ciezarek, G.; Clarke, P.; Clemencic, M.; Cliff, H.; Closier, J.; Coca, C.; Coco, V.; Cogan, J.; Cogneras, E.; Collins, P.; Comerma-Montells, A.; Contu, A.; Cook, A.; Coombes, M.; Coquereau, S.; Corti, G.; Couturier, B.; Cowan, G.; Craik, D.; Cunliffe, S.; Currie, R.; D’Ambrosio, C.; David, P.; David, P.; Davis, A.; Bonis, I.; Bruyn, K.; Capua, S.; Cian, M.; Miranda, J.; Paula, L.; Silva, W.; Simone, P.; Decamp, D.; Deckenhoff, M.; Buono, L.; Déléage, N.; Derkach, D.; Deschamps, O.; Dettori, F.; Canto, A.; Dijkstra, H.; Dogaru, M.; Donleavy, S.; Dordei, F.; Suárez, A.; Dossett, D.; Dovbnya, A.; Dupertuis, F.; Durante, P.; Dzhelyadin, R.; Dziurda, A.; Dzyuba, A.; Easo, S.; Egede, U.; Egorychev, V.; Eidelman, S.; van Eijk, D.; Eisenhardt, S.; Eitschberger, U.; Ekelhof, R.; Eklund, L.; Rifai, I.; Elsasser, C.; Falabella, A.; Färber, C.; Fardell, G.; Farinelli, C.; Farry, S.; Fave, V.; Ferguson, D.; Albor, V.; Rodrigues, F.; Ferro-Luzzi, M.; Filippov, S.; Fiore, M.; Fitzpatrick, C.; Fontana, M.; Fontanelli, F.; Forty, R.; Francisco, O.; Frank, M.; Frei, C.; Frosini, M.; Furcas, S.; Furfaro, E.; Torreira, A.; Galli, D.; Gandelman, M.; Gandini, P.; Gao, Y.;

Measurement of the relative rate of prompt χ c0, χ c1 and χ c2 production at $ \sqrt{s}=7 $ TeV

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Abstract

Abstract Prompt production of charmonium χ c0, χ c1 and χ c2 mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of $ \sqrt{s}=7 $ TeV. The χ c mesons are identified through their decay to J/ψγ, with J/ψ → μ + μ − using photons that converted in the detector. A data sample, corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb detector, is used to measure the relative prompt production rate of χ c1 and χ c2 in the rapidity range 2.0 < y < 4.5 as a function of the J/ψ transverse momentum from 3 to 20 GeV/c. First evidence for χ c0 meson production at a high-energy hadron collider is also presented.

Countries

Spain, United Kingdom, Spain, Italy, Italy, Italy, Italy, Italy, Italy, United Kingdom, Italy, Italy, Netherlands, Netherlands, Italy, United Kingdom, Italy, Italy, France, Italy, Italy

Related Organizations

Aix-Marseille University
France
Russian Academy of Sciences
Russian Federation
University of Warwick
United Kingdom
University of Milan
Italy
University of Pisa
Italy

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Keywords

Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], DECAY; COLLISIONS; PSI, Quarkonium, hadron-hadron scattering; quarkonium, 530, Partícules (Física nuclear), High Energy Physics - Experiment, Hadron-hadron scattering; Quarkonium, 539, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Gran col·lisionador d'hadrons (França i Suïssa), PSI, QC, Hadron-Hadron Scattering, 620, Col·lisions (Física nuclear), 539 - Constitució física de la matèria, Heavy quarkonia; Leptonic semileptonic and radiative decays of J/ψ Υ and other quarkonia; Hadron-induced high- and super-high-energy interactions (energy > 10 GeV): Inclusive production with identified hadrons, Hadron-hadron scattering; Quarkonium;, Protons, SDG 6 - Clean Water and Sanitation, DECAY, Hadron-hadron scattering; Quarkonium; Nuclear and High Energy Physics

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