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Tagir Aushev

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Related publications (404)

Observation of the doubly cabibbo-suppressed decay Ds+→K+K+π-

Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang, Jing Li

We report the first observation of the doubly Cabibbo-suppressed decay Ds+→K+K+π- using 605fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The branching ratio with respect to its Cabibbo-favored counterpart B(Ds+ ...

2009

Study of intermediate two-body decays in over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+

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

We present results of a detailed study of the three-body over(B, ̄)0 → Σc (2455)0 over(p, ̄) π+ decay. A significant enhancement of signal events is observed in the over(p, ̄) π+ invariant mass distribution near 1.5 GeV / c2 that is consistent with the pre ...

2008

Observation of a near-threshold enhancement in the e+e- →Λc+Λc- Cross section using initial-state radiation

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

We report a measurement of the exclusive e+e-→Λc+Λc- cross section as a function of center-of-mass energy near the Λc+Λc- threshold. A clear peak with a significance of 8.2σ is observed in the Λc+Λc- invariant mass distribution just above threshold. With a ...

2008

Search for B→πℓ+ℓ- decays at Belle

Jean Wicht, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim

We present a search for the decays B+→π+ℓ+ℓ- and B0→π0ℓ+ℓ-, where ℓ+ℓ- is either a μ+μ- or e+e- pair, with a data sample of 657×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. Signal events are reconstructed from a charged or a n ...

American Physical Society2008

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

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

Measurement of the moments of the photon energy spectrum in B→Xsγ decays and determination of |Vcb| and mb at Belle

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

Using the previous Belle measurement of the inclusive photon energy in B→Xsγ decays, we determine the first and second moments of this spectrum for minimum photon energies in the B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements ...

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

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

Evidence for neutral B meson decays to ωk*0

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

We present the results of a study of the charmless vector-vector decay B0→ωK0 with 657×106 BB̅ pairs collected with the Belle detector at the KEKB e+e- collider. We measure the branching fraction to be B(B0→ωK0)=[1.8±0.7(stat)±0.3(syst)]×10-6 with 3.0σ s ...

2008

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

Search for a CP asymmetry in Cabibbo-suppressed D0 decays

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

We measure the CP-violating asymmetries in decays to the D0 → K+ K- and D0 → π+ π- CP eigenstates using 540 fb-1 of data collected with the Belle detector at or near the Υ{hooked} (4 S) resonance. Cabibbo-favored D0 → K- π+ decays are used to correct for s ...

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

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