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Olivier Schneider

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Publications associées (1 123)

Study of B+→pΛ¯γ, pΛ¯π0 and B0→pΛ¯π-

Olivier Schneider, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang

American Physical Society2007

Measurement of charmless B decays to ηK* and ηρ

Aurelio Bay, Olivier Schneider, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang

American Physical Society2007

Measurement of the τ lepton mass and an upper limit on the mass difference between τ+ and τ-

Aurelio Bay, Olivier Schneider, Tagir Aushev, Stewart Cole, Chao Wang

The mass of the τ lepton has been measured in the decay mode τ→3πντ using a pseudomass technique. The result obtained from 414fb-1 of data collected with the Belle detector is Mτ=[1776.61±0. 13(stat)±0.35(sys)]MeV/c2. The upper limit on the relative mass d ...

2007

Observation of direct CP violation in B0→π+π- decays and model-independent constraints on the quark-mixing angle 2

Olivier Schneider, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang, Lei Zhang

We report a new measurement of the time-dependent CP-violating parameters in B0→π+π- decays with 535×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider operating at the Υ(4S) resonance. We find 1464±65 B0→π+π- event ...

2007

Search for lepton flavor violating τ- decays with a KS 0 meson

Olivier Schneider, Tagir Aushev, Stewart Cole, Chao Wang, Lei Zhang

We have searched for the lepton flavor violating decays τ- → ℓ- KS 0 (ℓ = e or μ), using a data sample of 281 fb-1 collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider. No evidence for a signal was found in either of the decay mod ...

2006

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

Olivier Schneider, Sun Hee Kim, Tagir Aushev, Vladislav Balagura, Lei Zhang, Jing Li

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

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

Olivier Schneider, Sun Hee Kim, Tagir Aushev, Stewart Cole, Chao Wang, Vladislav Balagura, Lei Zhang, Ji Hyun Kim

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

Observation of B+→Λc+Λc-K+ and B0→Λc+Λc-K0 Decays

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

American Physical Society2006

Observation of B+→Ξ¯c0Λc+ and evidence for B0→Ξ¯c-Λc+

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

American Physical Society2006

Measurement of ϕ_{3} with a Dalitz plot analysis of B^{+}→D^{()}K^{()+} decay

Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Lei Zhang, Jing Li

American Physical Society2006

Measurement of branching fractions for B → χc1(2)K (K*) at Belle

Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Yuan Yuan, Lei Zhang

We have measured the branching fractions for the exclusive decay modes B→χc1(2)K(K*) using a 140 fb-1 data sample collected by the Belle detector at the KEKB asymmetric-energy e +e- collider. The measured branching fractions for B +→χc1K+, B0→χ c1K0, B0→χc ...

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

Search for neutrinoless decays τ → ℓ h h and τ → ℓ V0

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Stewart Cole

We have searched for neutrinoless τ lepton decays into ℓhh or ℓ V0, where ℓ stands for an electron or muon, h for a charged light hadron, π or K, and V0 for a neutral vector meson, ρ0, K* (892)0 and φ{symbol}, using a 158 fb-1 data sample collected with th ...

2006

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

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

American Physical Society2006

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 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

Study of J/ψ→pp¯,ΛΛ¯ and Observation of ηc→ΛΛ¯ at Belle

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

2006

Observation of a Near-Threshold D0D¯0π0 Enhancement in B→D0D¯0π0K Decay

Olivier Schneider, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang, Vladislav Balagura

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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