@article{3072941,
    title = "Measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) in pp collisions at s=8TeV",
    author = "Khachatryan, V. and Sirunyan, A.M. and Tumasyan, A. and Adam, W. and Bergauer, T. and Dragicevic, M. and Erö, J. and Fabjan, C. and Friedl, M. and Frühwirth, R. and Ghete, V.M. and Hartl, C. and Hörmann, N. and Hrubec, J. and Jeitler, M. and Kiesenhofer, W. and Knünz, V. and Krammer, M. and Krätschmer, I. and Liko, D. and Mikulec, I. and Rabady, D. and Rahbaran, B. and Rohringer, H. and Schöfbeck, R. and Strauss, J. and Taurok, A. and Treberer-Treberspurg, W. and Waltenberger, W. and Wulz, C.-E. and Mossolov, V. and Shumeiko, N. and Suarez Gonzalez, J. and Alderweireldt, S. and Bansal, M. and Bansal, S. and Cornelis, T. and De Wolf, E.A. and Janssen, X. and Knutsson, A. and Luyckx, S. and Ochesanu, S. and Roland, B. and Rougny, R. and Van De Klundert, M. and Van Haevermaet, H. and Van Mechelen, P. and Van Remortel, N. and Van Spilbeeck, A. and Blekman, F. and Blyweert, S. and D'Hondt, J. and Daci, N. and Heracleous, N. and Keaveney, J. and Lowette, S. and Maes, M. and Olbrechts, A. and Python, Q. and Strom, D. and Tavernier, S. and Van Doninck, W. and Van Mulders, P. and Van Onsem, G.P. and Villella, I. and Caillol, C. and Clerbaux, B. and De Lentdecker, G. and Dobur, D. and Favart, L. and Gay, A.P.R. and Grebenyuk, A. and Léonard, A. and Mohammadi, A. and Perniè, L. and Reis, T. and Seva, T. and Thomas, L. and Vander Velde, C. and Vanlaer, P. and Wang, J. and Adler, V. and Beernaert, K. and Benucci, L. and Cimmino, A. and Costantini, S. and Crucy, S. and Dildick, S. and Fagot, A. and Garcia, G. and Mccartin, J. and Ocampo Rios, A.A. and Ryckbosch, D. and Salva Diblen, S. and Sigamani, M. and Strobbe, N. and Thyssen, F. and Tytgat, M. and Yazgan, E. and Zaganidis, N. and Basegmez, S. and Beluffi, C. and Bruno, G. and Castello, R. and Caudron, A. and Ceard, L. and Da Silveira, G.G. and Delaere, C. and du Pree, T. and Favart, D. and Forthomme, L. and Giammanco, A. and Hollar, J. and Jez, P. and Komm, M. and Lemaitre, V. and Nuttens, C. and Pagano, D. and Perrini, L. and Pin, A. and Piotrzkowski, K. and Popov, A. and Quertenmont, L. and Selvaggi, M. and Vidal Marono, M. and Vizan Garcia, J.M. and Beliy, N. and Caebergs, T. and Daubie, E. and Hammad, G.H. and Aldá Júnior, W.L. and Alves, G.A. and Brito, L. and Correa Martins Junior, M. and Dos Reis Martins, T. and Mora Herrera, C. and Pol, M.E. and Carvalho, W. and Chinellato, J. and Custódio, A. and Da Costa, E.M. and De Jesus Damiao, D. and De Oliveira Martins, C. and Fonseca De Souza, S. and Malbouisson, H. and Matos Figueiredo, D. and Mundim, L. and Nogima, H. and Prado Da Silva, W.L. and Santaolalla, J. and Santoro, A. and Sznajder, A. and Tonelli Manganote, E.J. and Vilela Pereira, A. and Bernardes, C.A. and Dogra, S. and Fernandez Perez Tomei, T.R. and Gregores, E.M. and Mercadante, P.G. and Novaes, S.F. and Padula, S.S. and Aleksandrov, A. and Genchev, V. and Iaydjiev, P. and Marinov, A. and Piperov, S. and Rodozov, M. and Stoykova, S. and Sultanov, G. and Tcholakov, V. and Vutova, M. and Dimitrov, A. and Glushkov, I. and Hadjiiska, R. and Kozhuharov, V. and Litov, L. and Pavlov, B. and Petkov, P. and Bian, J.G. and Chen, G.M. and Chen, H.S. and Chen, M. and Du, R. and Jiang, C.H. and Liang, S. and Plestina, R. and Tao, J. and Wang, X. and Wang, Z. and Asawatangtrakuldee, C. and Ban, Y. and Guo, Y. and Li, Q. and Li, W. and Liu, S. and Mao, Y. and Qian, S.J. and Wang, D. and Zhang, L. and Zou, W. and Avila, C. and Chaparro Sierra, L.F. and Florez, C. and Gomez, J.P. and Gomez Moreno, B. and Sanabria, J.C. and Godinovic, N. and Lelas, D. and Polic, D. and Puljak, I. and Antunovic, Z. and Kovac, M. and Brigljevic, V. and Kadija, K. and Luetic, J. and Mekterovic, D. and Sudic, L. and Attikis, A. and Mavromanolakis, G. and Mousa, J. and Nicolaou, C. and Ptochos, F. and Razis, P.A. and Bodlak, M. and Finger, M. and Finger, M. and Assran, Y. and Ellithi Kamel, A. and Mahmoud, M.A. and Radi, A. and Kadastik, M. and Murumaa, M. and Raidal, M. and Tiko, A. and 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J. and Belknap, D.A. and Carlsmith, D. and Cepeda, M. and Dasu, S. and Dodd, L. and Duric, S. and Friis, E. and Hall-Wilton, R. and Herndon, M. and Hervé, A. and Klabbers, P. and Lanaro, A. and Lazaridis, C. and Levine, A. and Loveless, R. and Mohapatra, A. and Ojalvo, I. and Perry, T. and Pierro, G.A. and Polese, G. and Ross, I. and Sarangi, T. and Savin, A. and Smith, W.H. and Vuosalo, C. and Woods, N. and CMS Collaboration and Marzocchi, B.",
    journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
    year = "2015",
    volume = "743",
    pages = "383-402",
    publisher = "Elsevier B.V.",
    doi = "10.1016/j.physletb.2015.02.048",
    abstract = "A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P) and χb2(1P) bottomonium states, promptly produced in pp collisions at s=8TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P)→ϒ(1S)+γ. The emitted photons are measured through their conversion to e+e- pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7fb-1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ|<1.0; the ϒ(1S) rapidity, |yϒ|<1.5; and the ϒ(1S) transverse momentum, 7<pTϒ<40GeV. The cross section ratio shows no significant dependence on the ϒ(1S) transverse momentum, with a measured average value of 0.85±0.07(stat+syst)±0.08(BF), where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the χb branching fractions. © 2015 CERN for the benefit of the CMS Collaboration."
}