A search is presented for the decay ϒ(1S)→γA0, A0→cc¯, where A0 is a candidate for the CP-odd Higgs boson of the next-to-minimal supersymmetric standard model. The search is based on data collected with the BABAR detector at the ϒ(2S) resonance. A sample of ϒ(1S) mesons is selected via the decay ϒ(2S)→π+π−ϒ(1S). The A0→cc¯ decay is identified through the reconstruction of hadronic D0, D+, and D∗(2010)+ meson decays. No significant signal is observed. The measured 90% confidence-level upper limits on the product branching fraction ℬ(ϒ(1S)→γA0)×ℬ(A0→cc¯) range from 7.4×10−5 to 2.4×10−3 for A0 masses from 4.00 to 8.95  GeV/c2 and 9.10 to 9.25  GeV/c2, where the region between 8.95 and 9.10  GeV/c2 is excluded because of background from ϒ(2S)→γχbJ(1P), χbJ(1P)→γϒ(1S) decays.

Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2015). Search for a light Higgs resonance in radiative decays of the Upsilon(1S) with a charm tag. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 91(7), 1-9 [10.1103/PhysRevD.91.071102].

Search for a light Higgs resonance in radiative decays of the Upsilon(1S) with a charm tag

PATRIGNANI, CLAUDIA;
2015

Abstract

A search is presented for the decay ϒ(1S)→γA0, A0→cc¯, where A0 is a candidate for the CP-odd Higgs boson of the next-to-minimal supersymmetric standard model. The search is based on data collected with the BABAR detector at the ϒ(2S) resonance. A sample of ϒ(1S) mesons is selected via the decay ϒ(2S)→π+π−ϒ(1S). The A0→cc¯ decay is identified through the reconstruction of hadronic D0, D+, and D∗(2010)+ meson decays. No significant signal is observed. The measured 90% confidence-level upper limits on the product branching fraction ℬ(ϒ(1S)→γA0)×ℬ(A0→cc¯) range from 7.4×10−5 to 2.4×10−3 for A0 masses from 4.00 to 8.95  GeV/c2 and 9.10 to 9.25  GeV/c2, where the region between 8.95 and 9.10  GeV/c2 is excluded because of background from ϒ(2S)→γχbJ(1P), χbJ(1P)→γϒ(1S) decays.
2015
Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2015). Search for a light Higgs resonance in radiative decays of the Upsilon(1S) with a charm tag. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 91(7), 1-9 [10.1103/PhysRevD.91.071102].
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lee, M. J.; Ly...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/534728
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