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Aurelio Bay

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Publications associées (871)

Evidence of time-dependent CP violation in the decay B^{0}→D^{+}D^{-}

Jean Wicht, Aurelio Bay, Remi Léandre Albert Louvot, Nicolas Zwahlen, Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Jing Li

We report a measurement of the CP-odd fraction and the time-dependent CP violation in B-0 -> D*+D*- decays, using 657x10(6) BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure ...

American Physical Society2009

Time-dependent Dalitz plot measurement of CP parameters in B0→KS0π+π- decays

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang, Jing Li

We present a time-dependent Dalitz plot measurement of CP violation parameters in B-0 -> K-S(0)pi(+)pi(-) decays. These results are obtained from a large data sample that contains 657x10(6) B(B)over bar pairs collected at the Upsilon(4S) resonance with the ...

American Physical Society2009

Measurement of B→Ds(*)Kπ branching fractions

Aurelio Bay, Remi Léandre Albert Louvot, Nicolas Zwahlen, Olivier Schneider, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim

We report a measurement of the exclusive B+ meson decay to the D-s(()K-)(+)pi(+) final state using 657 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We use D-s - ...

American Physical Society2009

Measurement of D^{+}→K_{S}^{0}K^{+} and D_{s}^{+}→K_{S}^{0}π^{+} branching ratios

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Jing Li

We report an improved measurement of D+->(KSK+)-K-0 and D-s(+)-> K-S(0)pi(+) branching ratios using 605 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching ratios with respect to the Cabi ...

American Physical Society2009

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

Search for B0→J/ψ decays

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Xiao Wang, Jing Li

We report a search for the decay B0→J/ψ, using a sample of 657×106 BB̄ pairs collected with the Belle detector at the Υ(4S) resonance. No statistically significant signal is found and an upper limit for the branching fraction is determined to be B(B0→J/ψ)< ...

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 B̄0→Λc+Λ̄c- decay at Belle

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

We search for the doubly charmed baryonic decay B̄0→Λ c+Λ̄c-, in a data sample of 520×106 BB̄ events accumulated at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no significant signal and set an upper limi ...

American Physical Society2008

Study of the solar anisotropy of cosmic ray primaries of about 200 GeV energy with the L3+C muon detector

Eduardo Sanchez, Horst Vogel, Aurelio Bay, Yu Lei, Jian Zhao, Liang Sun, Qian Wang, Zhirui Xu, Matthias Weber, Ji Hyun Kim, Werner Lustermann, Xiao Wang, Yifei Guo, Xuan Yang, Zheng Wang

Context. Primary cosmic rays experience multiple deflections in the non-uniform galactic and heliospheric magnetic fields which may generate anisotropies. Aims. A study of anisotropies in the energy range between 100 and 500 GeV is performed. This energy r ...

2008

Difference in direct charge-parity violation between charged and neutral B meson decays

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

2008

Study of the decay mechanism for B+ -> p(p)over-barK(+) and B+ -> p(p)over-bar pi(+)

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

We study the characteristics of the low mass p (p) over bar enhancements near threshold in the three-body decays B+ -> p (p) over barK(+) and B+ -> p (p) over bar pi(+). We observe that the proton polar angle distributions in the p (p) over bar helicity fr ...

2008

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 a New DsJ Meson in B+→D¯0D0K+ Decays

Aurelio Bay, Nicolas Zwahlen, Olivier Schneider, Sun Hee Kim, Mingkui Wang, Chao Wang, Xiao Wang

2008

Search for lepton flavor violating τ decays into three leptons

Aurelio Bay, Tagir Aushev, Vladislav Balagura

2008

Observation of Anomalous Υ(1S)π+π- and Υ(2S)π+π- Production near the Υ(5S) Resonance

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

2008

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

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

American Physical Society2008

Measurement of Branching Fractions, Isospin, and CP-Violating Asymmetries for Exclusive b→dγ Modes

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

2008

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

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

American Physical Society2008

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

New search for τ → μ γ and τ → e γ decays at Belle

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Chao Wang

We report on a search for the lepton flavor violating τ- → μ- γ and τ- → e- γ decays based on 535 fb-1 of data accumulated at the Belle experiment. No signal is found and we set 90% confidence level upper limits on the branching ratios B (τ- → μ- γ) < 4.5 ...

2008

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