We search for a low-mass scalar CP-odd Higgs boson, A0, produced in the radiative decay of the upsilon resonance and decaying into a τ+τ- pair: Υ(1S)→γA0. The production of Υ(1S) mesons is tagged by Υ(2S) →π+π-Υ(1S) transitions, using a sample of (98.3±0.9)×106 Υ(2S) mesons collected by the BABAR detector. We find no evidence for a Higgs boson in the mass range 3.5≤m A0≤9.2 GeV, and combine these results with our previous search for the tau decays of the light Higgs in radiative Υ(3S) decays, setting limits on the coupling of A0 to the bb̄ quarks in the range 0.09-1.9. Our measurements improve the constraints on the parameters of the next-to-minimal-supersymmetric Standard Model and similar theories with low-mass scalar degrees of freedom.

Lees, J., Poireau, V., Tisserand, V., Tico J., G., Grauges, E., Palano, A., et al. (2013). Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Υ(1S). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(7) [10.1103/PhysRevD.88.071102].

Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Υ(1S)

Martinelli M.;CARPINELLI, Massimo;
2013

Abstract

We search for a low-mass scalar CP-odd Higgs boson, A0, produced in the radiative decay of the upsilon resonance and decaying into a τ+τ- pair: Υ(1S)→γA0. The production of Υ(1S) mesons is tagged by Υ(2S) →π+π-Υ(1S) transitions, using a sample of (98.3±0.9)×106 Υ(2S) mesons collected by the BABAR detector. We find no evidence for a Higgs boson in the mass range 3.5≤m A0≤9.2 GeV, and combine these results with our previous search for the tau decays of the light Higgs in radiative Υ(3S) decays, setting limits on the coupling of A0 to the bb̄ quarks in the range 0.09-1.9. Our measurements improve the constraints on the parameters of the next-to-minimal-supersymmetric Standard Model and similar theories with low-mass scalar degrees of freedom.
Articolo in rivista - Articolo scientifico
BABAR detector;
English
2013
88
7
071102
none
Lees, J., Poireau, V., Tisserand, V., Tico J., G., Grauges, E., Palano, A., et al. (2013). Search for a low-mass scalar Higgs boson decaying to a tau pair in single-photon decays of Υ(1S). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(7) [10.1103/PhysRevD.88.071102].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389224
Citazioni
  • Scopus 49
  • ???jsp.display-item.citation.isi??? 34
Social impact