Viser treff 1-9 av 9

• #### Extraction of form factors from a four-dimensional angular analysis of ¯B→D∗ℓ−¯νℓ ﻿

(Journal article; Peer reviewed, 2019-08-30)
An angular analysis of the decay ¯B→D∗ℓ−¯νℓ, ℓ∈{e,μ}, is reported using the full e+e−collision data set collected by the BABAR experiment at the Υ(4S) resonance. One B meson from the Υ(4S)→B¯B decay is fully reconstructed ...
• #### Light meson spectroscopy from Dalitz plot analyses of ηc decays to η0 K+K− , η0 π + π − , and ηπ + π − produced in two-photon interactions ﻿

(Journal article; Peer reviewed, 2021)
We study the processes γγ→ηc→η′K+K−, η′π+π−, and ηπ+π− using a data sample of 519  fb−1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near ...
• #### Measurements of the absolute branching fractions of B± →k±Xc c ﻿

(Journal article; Peer reviewed, 2020-04-16)
A study of the two-body decays B±→Xc¯cK±, where Xc¯c refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424 fb−1. The absolute determination of branching fractions for these decays ...
• #### Observation of the decay D0→K−π+e+e− ﻿

(Peer reviewed; Journal article, 2019)
• #### Resonances in e+e- annihilation near 2.2 GeV ﻿

(Journal article; Peer reviewed, 2020-01-22)
Using the initial-state radiation method, the e+e−→KSKL cross section from 1.98 to 2.54 GeV is measured in a data sample of 469 fb−1 collected with the BABAR detector. The results are used in conjunction with previous BABAR ...
• #### Search for a dark leptophilic scalar in e+e- collisions ﻿

(Journal article; Peer reviewed, 2020-10-28)
Many scenarios of physics beyond the standard model predict the existence of new gauge singlets, which might be substantially lighter than the weak scale. The experimental constraints on additional scalars with masses in ...
• #### Search for a stable six-quark state at BABAR ﻿

(Journal article; Peer reviewed, 2019)
Recent investigations have suggested that the six-quark combination uuddss could be a deeply bound state (S) that has eluded detection so far, and a potential dark matter candidate. We report the first search for a stable, ...
• #### Search for lepton-flavor-violating decays D0 →x0e±μ ﻿

(Journal article; Peer reviewed, 2020-06-15)
We present a search for seven lepton-flavor-violating neutral charm meson decays of the type D0→X0e±μ∓, where X0 represents a π0, K0S, ¯K*0, ρ0, ϕ, ω, or η meson. The analysis is based on 468 fb−1 of e+e− annihilation data ...
• #### Search for rare or forbidden decays of the D0 meson ﻿

(Journal article; Peer reviewed, 2020-02-19)
We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D0→h'−h−ℓ'+ℓ+ and D0→h'−h+ℓ'±ℓ∓, where h and h′ represent a K or π meson and ℓ and ℓ′ an electron or ...