학술논문

Coherent psi (2S) photo-production in ultra-peripheral Pb-Pb collisions at root s(NN)=2.76TeV
Document Type
Author
Adam, J.Adamova, D.Aggarwal, M. M.Rinella, G. AglieriAgnello, M.Agrawal, N.Ahammed, Z.Ahn, S. U.Aimo, I.Aiola, S.Ajaz, M.Akindinov, A.Alam, S. N.Aleksandrov, D.Alessandro, B.Alexandre, D.Alfaro Molina, R.Alici, A.Alkin, A.Alme, J.Alt, T.Altinpinar, S.Altsybeev, I.Alves Garcia Prado, C.Andrei, C.Andronic, A.Anguelov, V.Anielski, J.Anticic, T.Antinori, F.Antonioli, P.Aphecetche, L.Appelshaueser, H.Arcelli, S.Armesto, N.Arnaldi, R.Aronsson, T.Arsene, I. C.Arslandok, M.Augustinus, A.Averbeck, R.Azmi, M. D.Bach, M.Badala, A.Baek, Y. W.Bagnasco, S.Bailhache, R.Bala, R.Baldisseri, A.Pedrosa, F. Baltasar Dos SantosBaral, R. C.Barbano, A. M.Barbera, R.Barile, F.Barnafoeldi, G. G.Barnby, L. S.Barret, V.Bartalini, P.Barth, K.Bartke, J.Bartsch, E.Basile, M.Bastid, N.Basu, S.Bathen, B.Batigne, G.Camejo, A. BatistaBatyunya, B.Batzing, P. C.Bearden, I. G.Beck, H.Bedda, C.Behera, N. K.Belikov, I.Bellini, F.Bello Martinez, H.Bellwied, R.Belmont, R.Belmont-Moreno, E.Belyaev, V.Bencedi, G.Beole, S.Berceanu, I.Bercuci, A.Berdnikov, Y.Berenyi, D.Bertens, R. A.Berzano, D.Betev, L.Bhasin, A.Bhat, I. R.Bhati, A. K.Bhattacharjee, B.Bhom, J.Bianchi, L.Bianchi, N.Bianchin, C.Bielcik, J.Bielcikova, J.Bilandzic, A.Biswas, R.Biswas, S.Bjelogrlic, S.Blanco, F.Blau, D.Blume, C.Bock, F.Bogdanov, A.Boggild, H.Boldizsar, L.Bombara, M.Book, J.Borel, H.Borissov, A.Borri, M.Bossu, F.Botje, M.Botta, E.Boettger, S.Braun-Munzinger, P.Bregant, M.Breitner, T.Broker, T. A.Browning, T. A.Broz, M.Brucken, E. J.Bruna, E.Bruno, G. E.Budnikov, D.Buesching, H.Bufalino, S.Buncic, P.Busch, O.Buthelezi, Z.Buxton, J. T.Caffarri, D.Cai, X.Caines, H.Diaz, L. CaleroCaliva, A.Calvo Villar, E.Camerini, P.Carena, F.Carena, W.Castellanos, J. CastilloCastro, A. J.Casula, E. A. R.Cavicchioli, C.Ceballos Sanchez, C.Cepila, J.Cerello, P.Chang, B.Chapeland, S.Chartier, M.Charvet, J. L.Chattopadhyay, S.Chelnokov, V.Cherney, M.Cheshkov, C.Cheynis, B.Barroso, V. ChibanteChinellato, D. D.Chochula, P.Choi, K.Chojnacki, M.Choudhury, S.Christakoglou, P.Christensen, C. H.Christiansen, PeterChujo, T.Chung, S. U.Chunhui, Z.Cicalo, C.Cifarelli, L.Cindolo, F.Cleymans, J.Colamaria, F.Colella, D.Collu, A.Colocci, M.Balbastre, G. Conesadel Valle, Z. ConesaConnors, M. E.Contreras, J. G.Cormier, T. M.Morales, Y. CorralesCortes Maldonado, I.Cortese, P.Cosentino, M. R.Costa, F.Crochet, P.Cruz Albino, R.Cuautle, E.Cunqueiro, L.Dahms, T.Dainese, A.Danu, A.Das, D.Das, I.Das, S.Dash, A.Dash, S.De, S.De Caro, A.de Cataldo, G.de Cuveland, J.de Falco, A.De Gruttola, D.De Marco, N.De Pasquale, S.Deisting, A.Deloff, A.Denes, E.D'Erasmo, G.Di Bari, D.Di Mauro, A.Di Nezza, P.Diaz Corchero, M. A.Dietel, T.Dillenseger, P.Divia, R.Djuvsland, O.Dobrin, A.Dobrowolski, T.Domenicis Gimenez, D.Doenigus, B.Dordic, O.Dubey, A. K.Dubla, A.Ducroux, L.Dupieux, P.Ehlers, R. 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C.Zaporozhets, S.Zarochentsev, A.Zavada, P.Zaviyalov, N.Zbroszczyk, H.Zgura, I. S.Zhalov, M.Zhang, H.Zhang, X.Zhang, Y.Zhao, C.Zhigareva, N.Zhou, D.Zhou, Y.Zhou, Z.Zhu, H.Zhu, J.Zhu, X.Zichichi, A.Zimmermann, A.Zimmermann, M. B.Zinovjev, G.Zyzak, M.
Source
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. 751:358-370
Subject
Naturvetenskap
Fysik
Subatomär fysik
Natural Sciences
Physical Sciences
Subatomic Physics
Language
English
ISSN
0370-2693
Abstract
We have performed the first measurement of the coherent psi(2S) photo-production cross section in ultraperipheral Pb-Pb collisions at the LHC. This charmonium excited state is reconstructed via the psi(2S) -> l(+)l(-) and ->(2S) -> J/psi pi(+)pi(-) decays, where the J/psi decays into two leptons. The analysis is based on an event sample corresponding to an integrated luminosity of about 22 mu b(-1). The cross section for coherent psi(2S) production in the rapidity interval -0.9 < y < 0.9is d sigma(coh)(psi(2S))/dy = 0.83 +/- 0.19 (stat+syst) mb. The psi(2S) to J/psi coherent cross section ratio is 0.34(-0.07)(+0.08)(stat+syst). The obtained results are compared to predictions from theoretical models. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.