For the ITER project it is clear that steps have to be taken in order to avoid or mitigate type-I ELMs when operating in the standard H-mode scenario. Otherwise, divertor power loads induced by intrinsic ELMs will result in an intolerably short divertor li ...

2006

Molecular Engineering of Organic Sensitizers for Solar Cell Applications

Michael Graetzel, Mohammad Khaja Nazeeruddin, Davide Di Censo, Sun Hee Kim, Jun Ho Yum, Filippo de Angelis

2006

Measurements of B decays to two kaons

Aurelio Bay, Sun Hee Kim, Tagir Aushev, Stewart Cole, Vladislav Balagura, Ji Hyun Kim, Jing Li

We report measurements of B meson decays to two kaons using 253fb-1 of data collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. We find evidence for signals in B+→K̄0K+ and B0→K0K̄0 with significances of 3.0σ and 3.5σ, respective ...

2005

Search for lepton flavor violating decays τ- → ℓ- π0, ℓ- η, ℓ- η′

Olivier Schneider, Sun Hee Kim, Chao Wang, Sanjeev Kumar, Lei Zhang, Jing Li

We have searched for lepton flavor violating semileptonic τ- decays using a data sample of 153.8 fb-1 accumulated with the Belle detector at the KEKB e+e- collider. For the six decay modes studied, the observed yield is compatible with the estimated backgr ...

2005

Observation of B-→J/ψΛp̄ and searches for B-→J/ψΣ0p̄ and B0→J/ψpp̄ decays

Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Stewart Cole, Chao Wang, Yuan Yuan, Lei Zhang, Ji Hyun Kim, Jing Li

We report the observation of B-→J/ψΛp̄ and searches for B-→J/ψΣ0p̄ and B0→J/ψpp̄ decays, using a sample of 275×106 BB̄ pairs collected with the Belle detector at the Υ(4S) resonance. We observe a signal of 17.2±4.1 events with a significance of 11.1σ and o ...

American Physical Society2005

Time-dependent CP-violating asymmetries in b→sq q transitions

Aurelio Bay, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Sanjeev Kumar, Lei Zhang, Jing Li

We present new measurements of CP-violation parameters in B0→K0, K+K-KS0, f0(980)KS0, η′KS0, ωKS0, and KS0π0 decays based on a sample of 275×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. ...

American Physical Society2005

Measurement of γγ → pp̄ production at Belle

Aurelio Bay, Sun Hee Kim, Tagir Aushev, Stewart Cole, Sanjeev Kumar

A high precision study of the process γγ→pp̄ has been performed using a data sample of 89 fb-1 collected with the Belle detector at the KEKB e+e- collider. The cross section of pp̄ production has been measured at two-photon center-of-mass (c.m.) energies b ...

2005

Measurement of the branching fractions for B- → D ()+π-ℓ-v̄ℓ and B̄0 → D()0π+ℓ -v̄ℓ

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

We report on a measurement of the branching fractions for B- → D()+π- ℓ -v̄ℓ and B̄0 → D ()0π+ℓ-v̄ℓ with 275 × 106 BB̄ events collected at the γ(4S) resonance with the Belle detector at KEKB. Events are tagged by fully reconstructing one of the B mesons ...

American Physical Society2005

Measurement of the time-dependent CP-violating asymmetry in BO→KSOπOγ decays

Aurelio Bay, Sun Hee Kim, Tagir Aushev, Stewart Cole, Sanjeev Kumar, Jing Li

We present a new measurement of CP-violation parameters in B0→KS0π0γ decay based on a sample of 275×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One of the B mesons is fully reconstruct ...

2005

Measurement of the wrong-sign decays D0→K+π-π0 and D0→K+π-π+π-, and search for CP violation

Aurelio Bay, Sun Hee Kim, Tagir Aushev, Jing Li

Using 281fb-1 of data from the Belle experiment recorded at or near the Υ(4S) resonance, we have measured the rates of the "wrong-sign" decays D0→K+π-π0 and D0→K+π-π+π- relative to those of the Cabibbo-favored decays D0→K-π+π0 and D0→K-π+π+π-. These wrong- ...

2005

Observation of B̄0 → D0η′ and B̄0 → D*0η′

Sun Hee Kim, Tagir Aushev, Stewart Cole, Jing Li

We report the observation of B̄0 → D 0η′ and the first observation of B̄0 → D*0η′, using 140 fb-1 of data collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. We find the branching fractions to be B(B̄0 → D0 ...

American Physical Society2005

Branching fraction, polarization and CP-violating asymmetries in B 0→D+D- decays

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

We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B0→D*+D *- decays using a 140 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collid ...

2005

Observation of B0→π0π0

Aurelio Bay, Sun Hee Kim, Tagir Aushev, Sanjeev Kumar, Ji Hyun Kim, Jing Li

We report the observation of the decay B0→π0π0, using a 253fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. The measured branching fraction is B(B0→π0π0)= (2.3-0.5-0.3+0.4+0.2)×10-6, with a significance o ...

2005

Observation of the D1(2420)→Dπ+π- decays

Sun Hee Kim, Tagir Aushev, Ji Hyun Kim, Jing Li

We report on the first observation of D10(2420)→D0π-π+ and D1+(2420)→D+π-π+ decays (where the contribution from the dominant known D1→D*π decay mode is excluded) in the B-→D10π- and B̄0→D1+π- decays, respectively. The observation is based on 15.2×107 BB̄ e ...

2005

Measurement of polarization and triple-product correlations in B→K* decays

Sun Hee Kim, Tagir Aushev, Sanjeev Kumar, Jing Li

We present measurements of decay amplitudes and triple-product correlations in B→K* decays based on 253fb-1 of data recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. The decay amplitudes for the three different helicity ...

2005

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