Precision measurement of the Λ c + baryon mass

The $\Lambda_c^+$ baryon mass is measured using $\Lambda_c^+\to\Lambda K^0_S K^+$ and $\Lambda_c^+\to\Sigma^0 K^0_S K^+$ decays reconstructed in 232 fb$^{-1}$ of data collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ storage ring. The $\Lambda_c^+$ mass is measured to be $22...

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Veröffentlicht in:	Physical review. D 2005-09, Vol.72 (5), Article 052006
Hauptverfasser:	Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Pompili, A., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., Ofte, I., Stugu, B., Abrams, G. S., Battaglia, M., Breon, A. B., Brown, D. N., Button-Shafer, J., Cahn, R. N., Charles, E., Day, C. T., Gill, M. S., Gritsan, A. V., Groysman, Y., Jacobsen, R. G., Kadel, R. W., Kadyk, J., Kerth, L. T., Kolomensky, Yu. G., Kukartsev, G., Lynch, G., Mir, L. M., Oddone, P. J., Orimoto, T. J., Pripstein, M., Roe, N. A., Ronan, M. T., Wenzel, W. A., Barrett, M., Ford, K. E., Harrison, T. J., Hart, A. J., Hawkes, C. M., Morgan, S. E., Watson, A. T., Fritsch, M., Goetzen, K., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Peters, K., Schroeder, T., Steinke, M., Boyd, J. T., Burke, J. P., Chevalier, N., Cottingham, W. N., Cuhadar-Donszelmann, T., Fulsom, B. G., Hearty, C., Knecht, N. S., Mattison, T. S., McKenna, J. A., Khan, A., Kyberd, P., Saleem, M., Teodorescu, L., Blinov, A. E., Blinov, V. E., Bukin, A. D., Druzhinin, V. P., Golubev, V. B., Kravchenko, E. A., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Yushkov, A. N., Best, D., Bondioli, M., Bruinsma, M., Chao, M., Curry, S., Eschrich, I., Kirkby, D., Lankford, A. J., Lund, P., Mandelkern, M., Mommsen, R. K., Roethel, W., Stoker, D. P.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
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Beschreibung
Zusammenfassung:	The $\Lambda_c^+$ baryon mass is measured using $\Lambda_c^+\to\Lambda K^0_S K^+$ and $\Lambda_c^+\to\Sigma^0 K^0_S K^+$ decays reconstructed in 232 fb$^{-1}$ of data collected with the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ storage ring. The $\Lambda_c^+$ mass is measured to be $2286.46\pm0.14\mathrm{MeV}/c^2$. The dominant systematic uncertainties arise from the amount of material in the tracking volume and from the magnetic field strength.
ISSN:	1550-7998 2470-0010 1550-2368 2470-0029
DOI:	10.1103/PhysRevD.72.052006