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2 results on '"p-states"'

1. Benefits in Relaxing the Power Capping Constraint

Author

Andrea Bartolini, Luca Benini, Daniele Cesarini, Cesarini, Daniele, Bartolini, Andrea, and Benini, Luca

Subjects
010302 applied physics, Power management, Speedup, Computer science, Distributed computing, 02 engineering and technology, RAPL, power capping, 01 natural sciences, Power budget, 020202 computer hardware & architecture, Frequency allocation, Power (physics), Constraint (information theory), monitoring, hardware performance counters, monitoring, HPC, P-states, RAPL, power capping, DVFS, power management, hardware performance counters, HPC, 0103 physical sciences, DVFS, P-states, power management, 0202 electrical engineering, electronic engineering, information engineering
Abstract

Proceedings of the 1st Workshop on AutotuniNg and aDaptivity AppRoaches for Energy efficient HPC Systems, ISBN:978-1-4503-5363-2

Published
2017
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2. Observation of the P-1(1) state of charmonium

Author

Rubin, P., Cawlfield, C., Eisenstein, B. I., Gollin, G. D., Karliner, I., Kim, D., Lowrey, N., Naik, P., Sedlack, C., Selen, M., White, E. J., Williams, J., Wiss, J., Edwards, K. W., Besson, D., Pedlar, T. K., Cronin-Hennessy, D., Gao, K. Y., Gong, D. T., Hietala, J., Kubota, Y., Klein, T., Lang, B. W., Li, S. Z., Poling, R., Scott, A. W., Smith, A., Dobbs, S., Metreveli, Z., Seth, K. K., Tomaradze, A., Zweber, P., Ernst, J., Mahmood, A. H., Severini, H., Asner, D. M., Dytman, S. A., Love, W., Mehrabyan, S., Mueller, J. A., Savinov, V., Li, Z., Lopez, A., Mendez, H., Ramirez, J., Huang, G. S., Miller, D. H., Pavlunin, V., Sanghi, B., Shipsey, I. P. J., Adams, G. S., Cravey, M., Cummings, J. P., Danko, I., Napolitano, J., He, Q., Muramatsu, H., Park, C. S., Park, W., Thorndike, E. H., Coan, T. E., Gao, Y. S., Liu, F., Artuso, M., Boulahouache, C., Blusk, S., Butt, J., Dorjkhaidav, O., Li, J., Menaa, N., Mountain, R., Nandakumar, R., Randrianarivony, K., Redjimi, R., Sia, R., Skwarnicki, T., Stone, S., Wang, J. C., Zhang, K., Csorna, S. E., Bonvicini, G., Cinabro, D., Dubrovin, M., Briere, R. A., Chen, G. P., Chen, J., Ferguson, T., Tatishvili, G., Vogel, H., Watkins, M. E., Rosner, J. L., Adam, N. E., Alexander, J. P., Berkelman, K., Cassel, D. G., Crede, V., Duboscq, J. E., Ecklund, K. M., Ehrlich, R., Fields, L., Galik, R. S., Gibbons, L., Gittelman, B., Gray, R., Gray, S. W., Hartill, D. L., Heltsley, B. K., Hertz, D., Jones, C. D., Kandaswamy, J., Kreinick, D. L., Kuznetsov, V. E., Mahlke-Kruger, H., Meyer, T. O., Onyisi, P. U. E., Patterson, J. R., Peterson, D., Phillips, E. A., Pivarski, J., Riley, D., Ryd, A., Sadoff, A. J., Schwarthoff, H., Shi, X., Shepherd, M. R., Stroiney, S., Sun, W. M., Urner, D., Wilksen, T., Weaver, K. M., Weinberger, M., Athar, S. B., Avery, P., Breva-Newell, L., Patel, R., Potlia, V., Stoeck, H., and Yelton, J.

Subjects
relativistic quark-model, heavy-quarkonium, hadronic transitions, e&e annihilation, potential model, light mesons, bound-states, p-states, qcd, spectroscopy
Abstract

The spin-singlet P-wave state of charmonium, h(c)(P-1(1)), has been observed in the decay psi(2S)->pi(0)h(c) followed by h(c)->gamma eta(c). Inclusive and exclusive analyses of the M(h(c)) spectrum have been performed. Two complementary inclusive analyses select either a range of energies for the photon emitted in h(c)->gamma eta(c) or a range of values of M(eta(c)). These analyses, consistent with one another within statistics, yield M(h(c))=[3524.9 +/- 0.7 (stat)+/- 0.4 (sys)] MeV/c(2) and a product of the branching ratios B-psi(psi(2S)->pi(0)h(c))xB(h)(h(c)->gamma eta(c))=[3.5 +/- 1.0 (stat)+/- 0.7 (sys)]x10(-4). When the eta(c) is reconstructed in seven exclusive decay modes, 17.5 +/- 4.5 h(c) events are seen with an average mass M(h(c))=[3523.6 +/- 0.9 (stat)+/- 0.5 (sys)] MeV/c(2), and BpsiBh=[5.3 +/- 1.5 (stat)+/- 1.0 (sys)]x10(-4). If combined, the inclusive and exclusive data samples yield an overall mass M(h(c))=[3524.4 +/- 0.6 (stat)+/- 0.4 (sys)] MeV/c(2) and product of branching ratios BpsiBh=[4.0 +/- 0.8 (stat)+/- 0.7 (sys)]x10(-4). The h(c) mass implies a P-wave hyperfine splitting Delta M-HF(1P)equivalent to < M(1(3)P)>-M(1(1)P(1))=[1.0 +/- 0.6 (stat)+/- 0.4 (sys)] MeV/c(2).

Published
2005

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