English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We search for a low-mass scalar CP-odd Higgs boson, A0, produced in theradiative decay of the Upsilon resonance and decaying into a tau+tau- pair:Upsilon(1S)->gamma A0. The production of Upsilon(1S) mesons is tagged byUpsilon(2S)->pi+pi-Upsilon(1S) transitions, using a sample of (98.3+/-0.9)million Upsilon(2S) mesons collected by the BaBar detector. We find no evidencefor a Higgs boson in the mass range 3.5 GeV<= m(A0)<=9.2 GeV, and combine theseresults with our previous search for the tau decays of the light Higgs inradiative Upsilon(3S) decays, setting limits on the coupling of A0 to theb/bbar quarks in the range 0.09-1.9. Our measurements improve the constraintson the parameters of the Next-to-Minimal-Supersymmetric Standard Model andsimilar theories with low-mass scalar degrees of freedom.

Search for a Low-Mass Scalar Higgs Boson Decaying to a Tau Pair in Single-Photon Decays of Upsilon(1S)