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Vladislav Balagura

Cette personne n’est plus à l’EPFL

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Publications associées (510)

Search for B+→D*+π0 decay

Jean Wicht, Aurelio Bay, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Xiao Wang

We report on a search for the doubly Cabibbo suppressed decay B+→D*+π0, based on a data sample of 657×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no significant signal and set ...

2008

Observation of B±→ψ(2S)π± and search for direct CP violation

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Xiao Wang

We report the first observation of B±→ψ(2S)π±, a Cabibbo- and color-suppressed decay. This analysis is based on 657×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. The measured branching ...

American Physical Society2008

Measurement of the near-threshold e+e-→DD̄ cross section using initial-state radiation

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang

We report measurements of the exclusive cross section for e+e-→DD̄, where D=D0 or D+, in the center-of-mass energy range from the DD̄ threshold to 5 GeV with initial-state radiation. The analysis is based on a data sample collected with the Belle detector ...

American Physical Society2008

Observation of e+e-→K+K-J/ψ via initial-state radiation at Belle

Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang

The process e+e-→K+K-J/ψ is observed for the first time via initial-state radiation. The cross section of e+e-→K+K-J/ψ for center-of-mass energies between threshold and 6.0 GeV is measured using 673fb-1 of data collected with the Belle detector on and off ...

American Physical Society2008

Observation of Ds1(2536)+→D+π-K+ and angular decomposition of Ds1(2536)+→D*+KS0

Aurelio Bay, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Xiao Wang

Using 462fb-1 of e+e- annihilation data recorded by the Belle detector, we report the first observation of the decay Ds1(2536)+→D+π-K+. The ratio of branching fractions B(Ds1(2536)+→D+π-K+)B(Ds1(2536) +→D*+K0) is measured to be (3.27±0.18±0.37)%. We also s ...

American Physical Society2008

Search for lepton-flavor-violating τ → ℓ V0 decays at Belle

Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang

We have searched for neutrinoless τ lepton decays into ℓ and V0, where ℓ stands for an electron or muon, and V0 for a vector meson (φ{symbol}, ω, K* 0, over(K, ̄)* 0 or ρ0), using 543 fb-1 of data collected with the Belle detector at the KEKB asymmetric-en ...

2008

Measurement of B(Ds+→μ+νμ)

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura

We present a measurement of the branching fraction B(Ds+→μ+νμ ) using a 548fb-1 data sample collected by the Belle experiment at the KEKB e+e- collider. The Ds momentum is determined by reconstruction of the system recoiling against DKγX in events of the t ...

2008

Time-dependent CP-violating asymmetry in B0→ρ0γ decays

Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Xiao Wang

We report the first measurement of CP-violation parameters in B0→ρ0γ decays based on a data sample of 657×106BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the time-dependent and direct CP-violating param ...

2008

Observation of B0→pp̄K0 with a Large K0 Polarization

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Xiao Wang, Jie Chen, Jing Li

Using a 492fb-1 data sample collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider, we observe the decay B0→pp̄K*0 with a branching fraction of (1.18-0.25+0.29(stat)±0.11(syst))×10-6. We study the decay dynam ...

2008

Production of new charmoniumlike states in e+e-→J/ψD() D̄() at s 10.6GeV

Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang

We report a study of the processes e+e-→J/ψD()D̄(). In J/ψDD̄ we observe a significant enhancement in the DD̄ invariant mass spectrum, which we interpret as a new charmoniumlike state and denote X(4160). The X(4160) parameters are M=(4156-20+25±15)Me ...

2008

Measurement of the time-dependent CP asymmetries in B0→KS0ρ 0γ decays

Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang, Jing Li

We report the first measurement of time-dependent CP asymmetry in B0→KS0ρ0γ decays based on 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy collider. We measure the CP-violating parameter SKS0ρ0γ=0.11±0.33(stat)-0.09+0.05( ...

2008

Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B^{0}→(ρπ)^{0} and a constraint on the quark mixing angle ϕ_{2}

Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Xiao Wang

American Physical Society2008

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Vladislav Balagura

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Search for B+→D*+π0 decay

Observation of B±→ψ(2S)π± and search for direct CP violation

Measurement of the near-threshold e+e-→DD̄ cross section using initial-state radiation

Observation of e+e-→K+K-J/ψ via initial-state radiation at Belle

Observation of Ds1(2536)+→D+π-K+ and angular decomposition of Ds1(2536)+→D*+KS0

Search for lepton-flavor-violating τ → ℓ V0 decays at Belle

Measurement of B(Ds+→μ+νμ)

Time-dependent CP-violating asymmetry in B0→ρ0γ decays

Observation of B0→pp̄K0 with a Large K0 Polarization

Production of new charmoniumlike states in e+e-→J/ψD() D̄() at s 10.6GeV

Measurement of the time-dependent CP asymmetries in B0→KS0ρ 0γ decays

High-statistics measurement of neutral-pion pair production in two-photon collisions

Observation of the ψ(4415)→DD¯2*(2460) Decay Using Initial-State Radiation

Improved measurement of time-dependent CP violation in B0→J/ψπ0 decays

Study of the suppressed B meson decay B-→DK-, D→K+π-

Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B^{0}→(ρπ)^{0} and a constraint on the quark mixing angle ϕ_{2}

Observation of two resonancelike structures in the π+χc1 mass distribution in exclusive B¯0→K-π+χc1 decays

High-statistics study of the τ-→π-π0ντ decay

Measurement of the branching fraction and charge asymmetry of the decay B+→D+D¯0 and search for B0→D0D¯0

Measurements of time-dependent CP violation in B0→ψ(2S)KS0 decays