NAGIOS: RODERIC FUNCIONANDO

Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Gamma(1S)

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Gamma(1S)

Mostra el registre complet de l'element

Visualització (1.266Mb)

BABAR Collaboration; Martínez Vidal, Fernando; Oyanguren Campos, Arantza; Villanueva Pérez, Pablo

Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : 10.1103/PhysRevD.87.031102

We search for di-muon decays of a low-mass Higgs boson (A(0)) produced in radiative Gamma(1S) decays. The Gamma(1S) sample is selected by tagging the pion pair in the Gamma(2S, 3S) -> pi(+)pi(-) Gamma(1S) transitions, using a data sample of 92.8 x 10(6) Gamma(2S) and 116.8 x 10(6) Gamma(3S) events collected by the BABAR detector. We find no evidence for A(0) production and set 90% confidence level upper limits on the product branching fraction B(Gamma(1S) -> gamma Lambda(0)) x B(Lambda(0)->mu(+)mu(-)) in the range of (0.28 ¿ 9.7) x 10(-6) for 0.212 <= m(A0) <= 9.20 GeV/c(2). The results are combined with our previous measurements of Gamma(2S,3S) -> gamma Lambda(0), Lambda(0) -> mu(+)mu(-) to set limits on the effective coupling of the b quark to the Lambda(0).

Veure al catàleg Trobes