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Precision Measurement of the B→X_sγ Photon Energy Spectrum, Branching Fraction, and Direct CP Asymmetry A_{CP}(B→X_{s+d}γ)

Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-11-09)

The photon spectrum in the inclusive electromagnetic radiative decays of the B meson, B→X_sγ plus B→X_dγ, is studied using a data sample of (382.8 ± 4.2)×10⁶Υ(4S) →BB̄ decays collected by the BABAR experiment at SLAC. ...

Measurement of the Absolute Branching Fraction for Λ_c⁺ → Λe⁺ν_e

Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (Amer Physical Soc, 2015-11-25)

We report the first measurement of the absolute branching fraction for Λ_c⁺. This measurement is based on 567 pb⁻¹ of e⁺e⁻ annihilation data produced at √s = 4.599 GeV, which is just above the Λ_c⁺ Λ̅_c̅ threshold. The ...

Study of High-Multiplicity Three-Prong and Five-Prong τ Decays at BABAR

Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (Amer Physical Soc, 2012-11-27)

We present measurements of the branching fractions of three-prong and five-prong τ decay modes using a sample of 430million τ lepton pairs, corresponding to an integrated luminosity of 468fb -1, collected with the BABAR ...

Observation of e⁺e⁻ → ωχ_{c1, 2} near √s̅ = 4.42 and 4.6 GeV

Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (American Physical Society, 2016-01-14)

Based on data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies √s̅ > 4.4 GeV, the processes e⁺e⁻ → ωχ(c1,2) are observed for the first time. With an integrated ...

Precision Measurement of the D*⁰ Decay Branching Fractions

Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; An, F. F.; Lou, Xinchou; BESIII Collaboration (2015-02-06)

Using 482 pb⁻¹ of data taken at √s = 4.009 GeV, we measure the branching fractions of the decays of D*⁰ into D⁰π⁰ and D⁰γ to be ℬ(D*⁰ → D⁰π⁰) = (65.5 ± 0.8 ± 0.5)% and ℬ(D*⁰ → D⁰γ) = (34.5 ± 0.8 ± 0.5)%, respectively, ...

Observation of the Isospin-Violating Decay J/ψ → φπ⁰ f₀(980)

Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (Amer Physical Soc, 2015-07)

Using a sample of 1.31 x 10⁹ J/ψ events collected with the BESIII detector at the BEPCII collider, the decays J/ψ → φπ⁺π⁻π⁰ and J/ψ → φπ⁰π⁰π⁰ are investigated. The isospin-violating decay J/ψ → φπ⁰f₀(980) with f₀(980) → ...

Measurement of the Form Factors in the Decay D⁺ → ωe⁺ν_e and Search for the Decay D⁺ → φe⁺ν_e.

Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (Amer Physical Soc, 2015-10-19)

Using 2.92 fb⁻¹ of electron-positron annihilation data collected at a center-of-mass energy of √s = 3.773 GeV with the BESIII detector, we present an improved measurement of the branching fraction ℬ(D⁺ → ωe⁺ν_e) = (1.63 ± ...

Observation of a Neutral Charmoniumlike State Z_c(4025)⁰ in e⁺e⁻ → (DD̅)⁰ π⁰

Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (2015-10)

We report a study of the process e⁺e⁻ → (D*D̅*)⁰ π⁰ using e⁺e⁻ collision data samples with integrated luminosities of 1092 pb⁻¹ at √s̅ = 4.23 GeV and 826 pb⁻¹ at √s̅ = 4.26 GeV collected with the BESIII detector at the ...

Search for a Light Higgs Boson Decaying to Two Gluons or ss̅ in the Radiative Decays of ϒ(1s)

Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2013-08-06)

We search for the decay ϒ(1s) → γA⁰, A⁰ → gg or ss̅, where A⁰ is the pseudoscalar light Higgs boson predicted by the next-to-minimal supersymmetric Standard Model. We use a sample of (17.6 ± 0.3) x10⁶ ϒ(1s) mesons produced ...

Study of B^{±,0} → J/ψK⁺K⁻K^{±,0} and search for B⁰ → J/ψϕ at BaBar

Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2015-01-07)

We study the rare B meson decays B^{±,0} → J/ψK⁺K⁻K^{±,0}, B^{±,0} → J/ψϕK^{±,0} and search for B⁰ → J/ψϕ, using 469 x 10⁶ BB̅ events collected at the ϒ(4S) resonance with the BABAR detector at the PEP-II e⁺e⁻ asymmetric ...

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