We measure the mass difference, Δm+, between the D∗(2010)+ and the D+ using the decay chain D∗(2010)+→D+π0 with D+→K-π+π+. The data were recorded with the BABAR detector at center-of-mass energies at and near the I(4S) resonance, and correspond to an integrated luminosity of approximately 468 fb-1. We measure Δm+=(140 601.0±6.8[stat]±12.9[syst]) keV. We combine this result with a previous BABAR measurement of Δm0≡m(D∗(2010)+)-m(D0) to obtain ΔmD=m(D+)-m(D0)=(4824.9±6.8[stat]±12.9[syst]) keV. These results are compatible with and approximately five times more precise than the Particle Data Group averages.

Measurement of the Dâ (2010)+-D+ Mass Difference / Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D.N., Kolomensky, Yu.G., Fritsch, M., Koch, H., Schroeder, T., Hearty, C., Mattison, T.S., Mckenna, J.A., So, R.Y., Blinov, V.E., Buzykaev, A.R., Druzhinin, V.P., Golubev, V.B., Kravchenko, E.A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 119:20(2017), p. 202003. [10.1103/PhysRevLett.119.202003]

Measurement of the D∗ (2010)+-D+ Mass Difference

Carpinelli, M.;
2017-01-01

Abstract

We measure the mass difference, Δm+, between the D∗(2010)+ and the D+ using the decay chain D∗(2010)+→D+π0 with D+→K-π+π+. The data were recorded with the BABAR detector at center-of-mass energies at and near the I(4S) resonance, and correspond to an integrated luminosity of approximately 468 fb-1. We measure Δm+=(140 601.0±6.8[stat]±12.9[syst]) keV. We combine this result with a previous BABAR measurement of Δm0≡m(D∗(2010)+)-m(D0) to obtain ΔmD=m(D+)-m(D0)=(4824.9±6.8[stat]±12.9[syst]) keV. These results are compatible with and approximately five times more precise than the Particle Data Group averages.
2017
Measurement of the Dâ (2010)+-D+ Mass Difference / Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D.N., Kolomensky, Yu.G., Fritsch, M., Koch, H., Schroeder, T., Hearty, C., Mattison, T.S., Mckenna, J.A., So, R.Y., Blinov, V.E., Buzykaev, A.R., Druzhinin, V.P., Golubev, V.B., Kravchenko, E.A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 119:20(2017), p. 202003. [10.1103/PhysRevLett.119.202003]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/202835
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