We have searched for τ lepton decays, τ-→Λ̄π- and τ-→Λπ-, that simultaneously violate the conservation of the lepton (L) and baryon (B) number using a data sample of 154 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. No ...

2006

Measurement of the branching fraction, polarization, and CP asymmetry for B0→ρ+ρ- Decays, and determination of the cabibbo-kobayashi-maskawa phase 2

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang, Vladislav Balagura, Lei Zhang, Jing Li

We have measured the branching fraction B, longitudinal polarization fraction fL, and CP asymmetry coefficients A and S for B0→ρ+ρ- decays with the Belle detector at the KEKB e+e- collider using 253fb-1 of data. We obtain B=[22.8±3.8(stat)-2.6+2.3(syst)]×1 ...

2006

Search for the Θ(1540)+ pentaquark using kaon secondary interactions at Belle

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Lei Zhang, Ji Hyun Kim, Jing Li

Using kaon secondary interactions in the material of the Belle detector, we search for both inclusive and exclusive production of the Θ(1540) +. We set an upper limit of 2.5% at the 90% C.L. on the ratio of the Θ(1540)+ to Λ(1520) inclusive production cros ...

2006

Observation of b→dγ and determination of |Vtd/Vts|

Sun Hee Kim, Tagir Aushev, Stewart Cole, Vladislav Balagura

We report the observation of the flavor-changing neutral current process b→dγ using a sample of 386×106 B meson pairs accumulated by the Belle detector at the KEKB e+e- collider. We measure branching fractions for the exclusive modes B-→ρ-γ, B̄0→ρ0γ, and B ...

2006

Search for the decay B0→γγ

Christian Jacoby, Jean Wicht, Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Stewart Cole, Chao Wang, Vladislav Balagura, Lei Zhang

The rare decay B0→γγ is searched for in 104fb-1 of data, corresponding to 111×106BB̄ pairs, collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No evidence for the signal is found, and an upper limit of 6.2×10-7 at 90% confidence ...

American Physical Society2006

Evidence of the purely leptonic decay B-→τ-ν̄τ

Aurelio Bay, Tagir Aushev, Stewart Cole, Vladislav Balagura

We present the first evidence of the decay B-→τ-ν̄τ, using 414fb-1 of data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events are tagged by fully reconstructing one of the B mesons in hadronic modes ...

2006

Evidence for B→η^{′}π and Improved Measurements for B→η^{′}K

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang, Vladislav Balagura, Lei Zhang

2006

Measurement of D0→πlν(Klν) Form Factors and Absolute Branching Fractions

Aurelio Bay, Olivier Schneider, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang, Vladislav Balagura, Lei Zhang, Jing Li

2006

Measurement of the Quark Mixing Parameter cos⁡2ϕ_{1} Using Time-Dependent Dalitz Analysis of B[over ¯]^{0}→D[K_{S}^{0}π^{+}π^{-}]h^{0}

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Stewart Cole, Chao Wang, Vladislav Balagura, Lei Zhang, Jing Li

2006

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Vladislav Balagura

Graph Chatbot

High Statistics Measurement of the Cross Sections of γγ→π

Observation of a Charmoniumlike State Produced in Association with a J/ψ in e+e- Annihilation at s≈10.6 GeV

Measurement of the Near-Threshold e+e-→D()±D()∓ Cross Section using Initial-State Radiation

Study of τ−→KSπ−νττ−→KSπ−ντ decay at Belle

Study of charmonia in four-meson final states produced in two-photon collisions

Measurement of D^{0}-D[over ¯]^{0} Mixing Parameters in D^{0}→K_{s}π^{+}π^{-} Decays

Measurement of the e+e-→π+π-J/ψ Cross Section Via Initial-State Radiation at Belle

Observation of B^{0}→D^{*-}τ^{+}ν_{τ} Decay at Belle

Search for lepton and baryon number violating τ- decays into Λ̄π- and Λπ-

Measurement of the branching fraction, polarization, and CP asymmetry for B0→ρ+ρ- Decays, and determination of the cabibbo-kobayashi-maskawa phase 2

Search for the Θ(1540)+ pentaquark using kaon secondary interactions at Belle

Observation of b→dγ and determination of |Vtd/Vts|

Search for the decay B0→γγ

Evidence of the purely leptonic decay B-→τ-ν̄τ

Evidence for B→η^{′}π and Improved Measurements for B→η^{′}K

Measurement of D0→πlν(Klν) Form Factors and Absolute Branching Fractions

Measurement of the Quark Mixing Parameter cos⁡2ϕ_{1} Using Time-Dependent Dalitz Analysis of B[over ¯]^{0}→D[K_{S}^{0}π^{+}π^{-}]h^{0}

Observation of a χc2′ Candidate in γγ→DD¯ Production at Belle

Measurement of CP violation in B0→D*-π+ and B0→D-π+ decays

Measurement of branching fraction and direct CP asymmetry in B0→ρ0π0 decays