We search for hadronic decays of a light Higgs boson (A(0)) produced in radiative decays of an Upsilon(2S) or Upsilon(3S) meson, UpsilongammaA(0). The data have been recorded by the BABAR experiment at the Upsilon(3S) and Upsilon(2S) center-of-mass energies and include (121.31.2)*10(6) Upsilon(3S) and (98.30.9)*10(6) Upsilon(2S) mesons. No significant signal is observed. We set 90% confidence level upper limits on the product branching fractions B(Upsilon(nS)gammaA(0))B(A(0)hadrons) (n=2 or 3) that range from 1*10(-6) for an A(0) mass of 0.3 GeV/c(2) to 8*10(-5) at 7 GeV/c(2).
Search for Hadronic Decays of a Light Higgs Boson in the Radiative Decay Upsilon -> gamma A(0)
Stracka S.Membro del Collaboration Group
;CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;Casarosa G.;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2011-01-01
Abstract
We search for hadronic decays of a light Higgs boson (A(0)) produced in radiative decays of an Upsilon(2S) or Upsilon(3S) meson, UpsilongammaA(0). The data have been recorded by the BABAR experiment at the Upsilon(3S) and Upsilon(2S) center-of-mass energies and include (121.31.2)*10(6) Upsilon(3S) and (98.30.9)*10(6) Upsilon(2S) mesons. No significant signal is observed. We set 90% confidence level upper limits on the product branching fractions B(Upsilon(nS)gammaA(0))B(A(0)hadrons) (n=2 or 3) that range from 1*10(-6) for an A(0) mass of 0.3 GeV/c(2) to 8*10(-5) at 7 GeV/c(2).File in questo prodotto:
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