Varghese Babu

Belle II Vertex Detector: Run Performance (PXD + SVD) and Upgrade Developments (VTX)

Ravinder Dhayal, P. Ahlburg, L. Andricek, Varghese Babu et autres

The Belle II experiment at SuperKEKB continues to pursue high-precision measurements in Standard Model studies and in searches for physics beyond the Standard Model, with a target dataset of 50 ab$^{-1}$ and peak luminosities of $6\times10^{35}$ cm$^{-2}$s$^{-1}$. The current Vertex Detector (VXD), …

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Test of light-lepton universality in τ decays with the Belle II experiment

Ichiro Adachi, K. Adamczyk, L. Aggarwal, H. Aihara et autres

A bstract We present a measurement of the ratio $$ {R}_{\mu }=\mathcal{B}\left({\tau}^{-}\to {\mu}^{-}{\overline{\nu}}_{\mu }{\nu}_{\tau}\right)/\mathcal{B}\left({\tau}^{-}\to {e}^{-}{\overline{\nu}}_e{\nu}_{\tau}\right) $$ R μ = B τ − → μ − ν ¯ μ ν τ / B τ − → e − ν ¯ e ν τ …

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Measurement of the branching fractions of $ \overline{B} $ → D$^{(*)}$K$^{−} {K}_{(S)}^{\left(\ast \right)0} $ and $ \overline{B} $ → D$^{(*)} {D}_s^{-} $ decays at Belle II

Ichiro Adachi, L. Aggarwal, Hiroaki Aihara, Н. Акопов et autres

We present measurements of the branching fractions of eight $ {\overline{B}}^0 $ → D$^{(*)+}$K$^{−} {K}_{(S)}^{\left(\ast \right)0} $, B$^{−}$ → D$^{(*)0}$K$^{−} {K}_{(S)}^{\left(\ast \right)0} $ decay channels. The results are based on data from SuperKEKB electron-positron collisions at the Υ(4S) resonance collected with the …

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Status of the BELLE II Pixel Detector

G. Giakoustidis, F. Abudinén, K. Ackermann, P. Ahlburg et autres

The Belle II experiment at the super KEK B-factory (SuperKEKB) in Tsukuba, Japan, has been collecting $e^+e^-$ collision data since March 2019. Operating at a record-breaking luminosity of up to $4.7\times10^{34} \ cm^{-2}s^{-1}$, data corresponding to $424 \ fb^{-1}$ has since been …

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Belle II Pixel Detector Commissioning and Operational Experience

B. Spruck, F. Abudinén, K. Ackermann, P. Ahlburg et autres

The Belle II experiment at the Super Flavour Factory SuperKEKB in Tsukuba, Japan, has started regular operation with its final detector setup in spring 2019. The Belle II vertexing system consists of four layers of double sided silicon strips (SVD) and two …

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Data quality monitors of vertex detectors at the start of the Belle II experiment

Jesus Abudinen, K. Ackermann, K. Adamczyk, P. Ahlburg et autres

The Belle II experiment features a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric e+e− collider at KEK in Tsukuba, Japan. The accelerator completed its first phase of commissioning in 2016, and the Belle II detector saw …

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Alignment for the first precision measurements at Belle II

T. Bilka, Jesus Abudinen, K. Ackermann, K. Adamczyk et autres

On March 25th 2019, the Belle II detector recorded the first collisions delivered by the SuperKEKB accelerator. This marked the beginning of the physics run with vertex detector. The vertex detector was aligned initially with cosmic ray tracks without magnetic field simultaneously …

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Belle II SVD ladder assembly procedure and electrical qualification

K. Adamczyk, H. Aihara, C. Angelini, T. Aziz et autres

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EPR and structural investigations on single crystals of potassium niobium peroxide fluoride hydrate, K2NbO2F5.cntdot.H2O

Geetha Ramakrishnan, P. Sambasiva Rao, Varghese Babu, Sankaran Subramanian

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEPR and structural investigations on single crystals of potassium niobium peroxide fluoride hydrate, K2NbO2F5.cntdot.H2ORamakrishnan Geetha, Pillutla Sambasiva Rao, Varghese Babu, and Sankaran SubramanianCite this: Inorg. Chem. 1991, 30, 7, 1630–1635Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Published …