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Measurement of the decays Λc→Σππ at Belle
Berger, M.,Schwanda, C.,Suzuki, K.,Adachi, I.,Ahn, J. K.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bakich, A. M.,Bansal, V.,Behera, P.,Bha American Physical Society 2018 Physical review. D Vol.98 No.11
Measurement of the decaysBs0→J/ψϕ(1020),Bs0→J/ψf2′(1525)andBs0→J/ψK+K−at Belle
Thorne, F.,Schwanda, C.,Adachi, I.,Aihara, H.,Asner, D. M.,Aulchenko, V.,Aushev, T.,Bakich, A. M.,Bala, A.,Bhuyan, B.,Bonvicini, G.,Brač,ko, M.,Chang, M. -C.,Chekelian, V.,Chen, A.,Cheon, B. G.,C American Physical Society 2013 PHYSICAL REVIEW D - Vol.88 No.11
Glattauer, R.,Schwanda, C.,Abdesselam, A.,Adachi, I.,Adamczyk, K.,Aihara, H.,Al Said, S.,Asner, D. M.,Aushev, T.,Ayad, R.,Aziz, T.,Badhrees, I.,Bakich, A. M.,Bansal, V.,Barberio, E.,Bhuyan, B.,Biswal, American Physical Society 2016 Physical Review D Vol.93 No.3
<P>We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar using the decay B -> Dl nu(l) (l = e,mu) based on 711 fb(-1) of e(+)e(-) -> Upsilon(4S) data recorded by the Belle detector and containing 772 x 10(6) B (B) over bar pairs. One B meson in the event is fully reconstructed in a hadronic decay mode, while the other, on the signal side, is partially reconstructed from a charged lepton and either a D+ or D-0 meson in a total of 23 hadronic decay modes. The isospin-averaged branching fraction of the decay B -> Dl nu(l) is found to be B(B-0 -> D(-)l(vertical bar)nu(l)) = (2.31 +/- 0.03(stat) +/- 0.11(syst))%. Analyzing the differential decay rate as a function of the hadronic recoil with the parametrization of Caprini, Lellouch, and Neubert and using the form-factor prediction G(1) = 1.0541 +/- 0.0083 calculated by FNAL/MILC, we obtain eta(EW)vertical bar V-cb vertical bar = (40.12 +/- 1.34) x 10(-3), where eta(EW) is the electroweak correction factor. Alternatively, assuming the model-independent form-factor parametrization of Boyd, Grinstein, and Lebed and using lattice QCD data from the FNAL/MILC and HPQCD collaborations, we find eta(EW)vertical bar V-cb vertical bar = (41.10 +/- 1.14) x 10(-3).</P>
The Belle II silicon vertex detector: Assembly and initial results
Thalmeier, R.,Casarosa, G.,Schwanda, C.,Aihara, H.,Aziz, T.,Bacher, S.,Bahinipati, S.,Barberio, E.,Baroncelli, Ti.,Baroncelli, To.,Basith, A.K.,Batignani, G.,Bauer, A.,Behera, P.K.,Bertacchi, V.,Betta Elsevier 2019 Nuclear Instruments & Methods in Physics Research. Vol.936 No.-
<P><B>Abstract</B></P> <P>The “chip-on-sensor” concept of this detector minimizes the distance of the signal propagation from the double-sided silicon detector strips to the readout chips and thus reduces noise from strip capacitance. One half of the detector is built, the second half is being assembled at the time of writing. Prototypes have been tested in several test beams as well as in the so-called Phase 2 setup inside the detector structure. First results from a commissioning run of the Belle-II prototype SVD detector are presented. The measured signal-to-noise and timing performance are found to be according to design specifications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The Belle-II Silicon Vertex Detector is based on a “chip-on-sensor” concept. </LI> <LI> One half of the detector is built, the second half is being assembled. </LI> <LI> Prototypes have been tested in a commissioning run inside the detector structure. </LI> <LI> The measured SNR and hit time are found to be according to design specifications. </LI> </UL> </P>