The physical characteristics such as mass and total width of ηc meson were analyzed in two-photon interactions. The hyperfine separations were found to be directly related to spin-spin interactions. The momenta of charged particles were measured and their trajectories reconstructed with two detector systems which were located in 1.5 T solenoidal magnetic field. The charged particle identification was provided by detector of internally reflected Cherenkov light. The mass resolution was determined by fitting the distribution of difference between reconstructed mass and generated mass to Gaussian function.

Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2004). Measurements of the mass and width of the ηc meson and of an ηc(2S) candidate. PHYSICAL REVIEW LETTERS, 92(14), 1-7 [10.1103/PhysRevLett.92.142002].

Measurements of the mass and width of the ηc meson and of an ηc(2S) candidate

CARPINELLI, Massimo;
2004

Abstract

The physical characteristics such as mass and total width of ηc meson were analyzed in two-photon interactions. The hyperfine separations were found to be directly related to spin-spin interactions. The momenta of charged particles were measured and their trajectories reconstructed with two detector systems which were located in 1.5 T solenoidal magnetic field. The charged particle identification was provided by detector of internally reflected Cherenkov light. The mass resolution was determined by fitting the distribution of difference between reconstructed mass and generated mass to Gaussian function.
Articolo in rivista - Articolo scientifico
Calorimeters; Charged particles; Computer simulation; Functions; High energy physics; Magnetic fields; Mathematical models; Monte Carlo methods; Radiation detectors; Resonance; Solenoids; Cherenkov light; Hyperfine separations; Luminosity; Photon spectra; Quark potential models; Quantum theory;
English
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B. Aubert et al. (BABAR Collaboration)
Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2004). Measurements of the mass and width of the ηc meson and of an ηc(2S) candidate. PHYSICAL REVIEW LETTERS, 92(14), 1-7 [10.1103/PhysRevLett.92.142002].
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