CMS Collaboration; Chatrchyan, S; Khachatryan, V; Sirunyan, AM; Tumasyan, A; Adam, W; Aguilo, E; Bergauer, T; Dragicevic, M; Erö, J; Fabjan, C; Friedl, M; Frühwirth, R; Ghete, VM; Hammer, J; Hörmann, N; Hrubec, J; Jeitler, M; Kiesenhofer, W; Knünz, V; Krammer, M; Krätschmer, I; Liko, D; Mikulec, I; Pernicka, M; Rahbaran, B; Rohringer, C; Rohringer, H; Schöfbeck, R; Strauss, J; Taurok, A; Waltenberger, W; Walzel, G; Widl, E; Wulz, C-E; Mossolov, V; Shumeiko, N; Suarez Gonzalez, J; Bansal, M; Bansal, S; Cornelis, T; De Wolf, EA; Janssen, X; Luyckx, S; Mucibello, L; Ochesanu, S; Roland, B; Rougny, R; Selvaggi, M; Staykova, Z; Van Haevermaet, H; Van Mechelen, P; Van Remortel, N; Van Spilbeeck, A; Blekman, F; Blyweert, S; D'Hondt, J; Gonzalez Suarez, R; Kalogeropoulos, A; Maes, M; Olbrechts, A; Van Doninck, W; Van Mulders, P; Van Onsem, GP; Villella, I; Clerbaux, B; De Lentdecker, G; Dero, V; Gay, APR; Hreus, T; Léonard, A; Marage, PE; Mohammadi, A; Reis, T; Thomas, L; Vander Marcken, G; Vander Velde, C; Vanlaer, P; Wang, J; Adler, V; Beernaert, K; Cimmino, A; Costantini, S; Garcia, G; Grunewald, M

doi:10.1140/epjc/s10052-012-2251-3

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Measurement of the relative prompt production rate of χ_c2 and χ_c1 in pp collisions at [Formula: see text].

2012

CMS Collaboration;
Chatrchyan, S;
Khachatryan, V;
Sirunyan, AM;
Tumasyan, A;
Adam, W;
Aguilo, E;
Bergauer, T;
Dragicevic, M;
Erö, J;
Fabjan, C;
Friedl, M;
Frühwirth, R;
Ghete, VM;
Hammer, J;
Hörmann, N;
Hrubec, J;
Jeitler, M;
Kiesenhofer, W;
Knünz, V;
Krammer, M;
Krätschmer, I;
Liko, D;
Mikulec, I;
Pernicka, M;
Rahbaran, B;
Rohringer, C;
Rohringer, H;
Schöfbeck, R;
Strauss, J;
Taurok, A;
Waltenberger, W;
Walzel, G;
Widl, E;
Wulz, C-E;
Mossolov, V;
Shumeiko, N;
Suarez Gonzalez, J;
Bansal, M;
Bansal, S;
Cornelis, T;
De Wolf, EA;
Janssen, X;
Luyckx, S;
Mucibello, L;
Ochesanu, S;
Roland, B;
Rougny, R;
Selvaggi, M;
Staykova, Z;
Van Haevermaet, H;
Van Mechelen, P;
Van Remortel, N;
Van Spilbeeck, A;
Blekman, F;
Blyweert, S;
D'Hondt, J;
Gonzalez Suarez, R;
Kalogeropoulos, A;
Maes, M;
Olbrechts, A;
Van Doninck, W;
Van Mulders, P;
Van Onsem, GP;
Villella, I;
Clerbaux, B;
De Lentdecker, G;
Dero, V;
Gay, APR;
Hreus, T;
Léonard, A;
Marage, PE;
Mohammadi, A;
Reis, T;
Thomas, L;
Vander Marcken, G;
Vander Velde, C;
Vanlaer, P;
Wang, J;
Adler, V;
Beernaert, K;
Cimmino, A;
Costantini, S;
Garcia, G;
Grunewald, M;
Klein, B;
Lellouch, J;
Marinov, A;
Mccartin, J;
Ocampo Rios, AA;
Ryckbosch, D;
Strobbe, N;
Thyssen, F;
Tytgat, M;
Verwilligen, P;
Walsh, S;
Yazgan, E;
Zaganidis, N;
Basegmez, S;
Bruno, G;
Castello, R;
Ceard, L;
Delaere, C;
du Pree, T;
Favart, D;
Forthomme, L;
Giammanco, A;
Hollar, J;
Lemaitre, V;
Liao, J;
Militaru, O;
Nuttens, C;
Pagano, D;
Pin, A;
Piotrzkowski, K;
Schul, N;
Vizan Garcia, JM;
Beliy, N;
Caebergs, T;
Daubie, E;
Hammad, GH;
Alves, GA;
Correa Martins Junior, M;
De Jesus Damiao, D;
Martins, T;
Pol, ME;
Souza, MHG;
Aldá Júnior, WL;
Carvalho, W;
Custódio, A;
Da Costa, EM;
De Oliveira Martins, C;
Fonseca De Souza, S;
Matos Figueiredo, D;
Mundim, L;
Nogima, H;
Oguri, V;
Prado Da Silva, WL;
Santoro, A;
Soares Jorge, L;
Sznajder, A;
Anjos, TS;
Bernardes, CA;
Dias, FA;
Fernandez Perez Tomei, TR;
Gregores, EM;
Lagana, C;
Marinho, F;
Mercadante, PG;
Novaes, SF;
Padula, Sandra S;
Genchev, V;
Iaydjiev, P;
Piperov, S;
Rodozov, M;
Stoykova, S;
Sultanov, G;
Tcholakov, V;
Trayanov, R;
Vutova, M;
Dimitrov, A;
Hadjiiska, R;
Kozhuharov, V;
Litov, L;
Pavlov, B;
Petkov, P;
Bian, JG;
Chen, GM;
Chen, HS;
Jiang, CH;
Liang, D;
Liang, S;
Meng, X;
Tao, J;
Wang, J;
Wang, X;
Wang, Z;
Xiao, H;
Xu, M;
Zang, J;
Zhang, Z;
Asawatangtrakuldee, C;
Ban, Y;
Guo, Y;
Li, W;
Liu, S;
Mao, Y;
Qian, SJ;
Teng, H;
Wang, D;
Zhang, L;
Zou, W;
Avila, C;
Gomez, JP;
Gomez Moreno, B;
Osorio Oliveros, AF;
Sanabria, JC;
Godinovic, N;
Lelas, D;
Plestina, R;
Polic, D;
Puljak, I;
Antunovic, Z;
Kovac, M;
Brigljevic, V;
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Luetic, J;
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Published Web Location

https://doi.org/10.1140/epjc/s10052-012-2251-3

Abstract

A measurement is presented of the relative prompt production rate of χ_c2 and χ_c1 with 4.6 fb^-1 of data collected by the CMS experiment at the LHC in pp collisions at [Formula: see text]. The two states are measured via their radiative decays χ_c→J/ψ+γ, with the photon converting into an e⁺e^- pair for J/ψ rapidity |y(J/ψ)|<1.0 and photon transverse momentum p_T(γ)>0.5 GeV/c. The measurement is given for six intervals of p_T(J/ψ) between 7 and 25 GeV/c. The results are compared to theoretical predictions.

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UC Riverside

Measurement of the relative prompt production rate of χc2 and χc1 in pp collisions at [Formula: see text].

Published Web Location

Measurement of the relative prompt production rate of χ_c2 and χ_c1 in pp collisions at [Formula: see text].