Measurement of the mass splittings between the b(b)over-bar chi(b,J)(1P) states

Edwards, KW; Bellerive, A; Janicek, R; MacFarlane, DB; Patel, PM; Sadoff, AJ; Ammar, R; Baringer, P; Bean, A; Besson, D; Coppage, D; Darling, C; Davis, R; Kotov, S; Kravchenko, I; Kwak, N; Zhou, L; Anderson, S; Kubota, Y; Lee, SJ; O'Neill, JJ; Poling, R; Riehle, T; Smith, A; Alam, MS; Athar, SB; Ling, Z; Mahmood, AH; Timm, S; Wappler, F; Anastassov, A; Duboscq, JE; Fujino, D; Gan, KK; Hart, T; Honscheid, K; Kagan, H; Kass, R; Lee, J; Schwarthoff, H; Spencer, MB; Sung, M; Undrus, A; Wolf, A; Zoeller, MM; Richichi, SJ; Severini, H; Skubic, P; Bishai, M; Fast, J; Hinson, JW; Menon, N; Miller, DH; Shibata, EI; Shipsey, IPJ; Yurko, M; Glenn, S; Kwon, Y; Lyon, AL; Roberts, S; Thorndike, EH; Jessop, CP; Lingel, K; Marsiske, H; Perl, ML; Savinov, V; Ugolini, D; Zhou, X; Coan, TE; Fadeyev, V; Korolkov, I; Maravin, Y; Narsky, I; Shelkov, V; Staeck, J; Stroynowski, R; Volobouev, I; Ye, J; Artuso, M; Azfar, F; Efimov, A; Goldberg, M; He, D; Kopp, S; Moneti, GC; Mountain, R; Schuh, S; Skwarnicki, T; Stone, S; Viehhauser, G; Wang, JC; Xing, X; Bartelt, J; Csorna, SE; Jain, V; McLean, KW; Marka, S; Godang, R; Kinoshita, K; Lai, IC; Pomianowski, P; Schrenk, S; Bonvicini, G; Cinabro, D; Greene, R; Perera, LP; Zhou, GJ; Chadha, M; Chan, S; Eigen, G; Miller, JS; Schmidtler, M; Urheim, J; Weinstein, AJ; Wurthwein, F; Bliss, DW; Jaffe, DE; Masek, G; Paar, HP; Prell, S; Sharma, V; Asner, DM; Gronberg, J; Hill, TS; Lange, DJ; Morrison, RJ; Nelson, HN; Nelson, TK; Roberts, D; Behrens, BH; Ford, WT; Gritsan, A; Roy, J; Smith, JG; Alexander, JP; Baker, R; Bebek, C; Beger, BE; Berkelman, K; Bloom, K; Boisvert, V; Cassel, DG; Crowcroft, DS; Dickson, M; von Dombrowski, S; Drell, PS; Ecklund, KM; Ehrlich, R; Foland, AD; Gaidarev, P; Galik, RS; Gibbons, L; Gittelman, B; Gray, SW; Hartill, DL; Heltsley, BK; Hopman, PI; Kandaswamy, J; Kreinick, DL; Lee, T; Liu, Y; Mistry, NB; Ng, CR; Nordberg, E; Ogg, M; Patterson, JR; Peterson, D; Riley, D; Soffer, A; Valant-Spaight, B; Ward, C; Athanas, M; Avery, P; Jones, CD; Lohner, M; Patton, S; Prescott, C; Yelton, J; Zheng, J; Brandenburg, G; Briere, RA; Ershov, A; Gao, YS; Kim, DYJ; Wilson, R; Yamamoto, K; Browder, TE; Li, Y; Rodriguez, JL; Bergfeld, T; Eisenstein, BI; Ernst, J; Gladding, GE; Gollin, GD; Hans, RM; Johnson, E; Karliner, I; Marsh, MA; Palmer, M; Selen, M; Thaler, JJ

Abstract:

We present new measurements of photon energies and branching fractions for the radiative transitions Y(2S)→γχb(J=0,1,2)(1P). The masses of the χb states are determined from the measured radiative photon energies. The ratio of mass splittings between the χb substates, r≡(MJ=2-MJ=1)/(MJ=1-MJ=0), with M the χb mass, provides information on the nature of the bb̄ confining potential. We find r(1P)=0.542 ±0.022±0.024. This value is somewhat lower than the previous world average, but more consistent with the theoretical expectation that r(1P)

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APA Style

Edwards, K. W., Bellerive, A., Janicek, R., MacFarlane, D. B., Patel, P. M., Sadoff, A. J., Ammar, R., Baringer, P., Bean, A., Besson, D., Coppage, D., Darling, C., Davis, R., Kotov, S., Kravchenko, I., Kwak, N., Zhou, L., Anderson, S., Kubota, Y., … Thaler, J. J. (1999). Measurement of the mass splittings between the b(b)over-bar chi(b,J)(1P) states. PHYSICAL REVIEW D, 59(3), 1–5.

MLA Style

Edwards, K. W., et al. “Measurement of the Mass Splittings between the b(b)over-Bar Chi(b,J)(1P) States.” PHYSICAL REVIEW D, vol. 59, no. 3, 1999, pp. 1–5.

Chicago Style

Edwards, KW, A Bellerive, R Janicek, DB MacFarlane, PM Patel, AJ Sadoff, R Ammar, et al. 1999. “Measurement of the Mass Splittings between the b(b)over-Bar Chi(b,J)(1P) States.” PHYSICAL REVIEW D 59 (3): 1–5.
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