R. Kumar

activity

20242026

most citedSearch for the lepton-flavor-violating

I ¨ ^{-} \to e^{\mp} ℓ^{\pm} ℓ^{\mp}

decays at Belle II

1 citations · 1 across the 4 of their papers we have counts for

collaborators

Showing 2024Show all

16 papers · 1 filter

hep-ex2024

Search for lepton flavor-violating decay modes $B^{0} \to K_{S}^{0} I ¨ ^{\pm} ℓ^{\mp} (ℓ = I^¼, e)$ with hadronic $B$ -tagging at Belle and Belle II

Belle, Belle II Collaborations, : +425

We present the first search for the lepton flavor-violating decay modes $B^{0} \to K_{S}^{0} I ¨ ^{\pm} ℓ^{\mp} (ℓ = I^¼, e)$ using the 711 fb $^{- 1}$ and 365 fb $^{- 1}$ data samples…

hep-ex2024

Search for lepton-flavor-violating $I ¨ ^{-} \to I^¼^{-} I^¼^{+} I^¼^{-}$ decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +429

We present the result of a search for the charged-lepton-flavor violating decay $I ¨ ^{-} \to I^¼^{-} I^¼^{+} I^¼^{-}$ using a $424 f b^{- 1}$ sample of data recorded by the Belle II experiment at t…

hep-ex2024

Search for $h_{b} (2 P) \to I^^{3} I ¨ _{b J} (1 P)$ at $s = 10.860$ GeV

Belle Collaboration, A. Boschetti, R. Mussa +140

In the bottomonium sector, the hindered magnetic dipole (M1) transitions between P-wave states $h_{b} (2 P) \to I ¨ _{b J} (1 P) I^^{3}$ , $J = 0, 1, 2$ , are expected to be severely…

hep-ex2024

Measurement of the energy dependence of the $e^{+} e^{-} \to B B ˉ$ , $B B ˉ^{}$ , and $B^{} B ˉ^{*}$ cross sections at Belle~II

Belle II Collaboration, I. Adachi, L. Aggarwal +466

We report measurements of the $e^{+} e^{-} \to B B ˉ$ , $B B ˉ^{*}$ , and $B^{*} B ˉ^{*}$ cross sections at four energies, 10653, 10701, 10746 and 10805 MeV, using data collected b…

hep-ex2024

Angular analysis of $B \to K^{*} e^{+} e^{-}$ in the low- $q^{2}$ region with new electron identification at Belle

Belle Collaboration, D. Ferlewicz, P. Urquijo +167

We perform an angular analysis of the $B \to K^{*} e^{+} e^{-}$ decay for the dielectron mass squared, $q^{2}$ , range of $0.0008$ to $1.1200 GeV^{2} / c^{4}$ using the full Belle data se…

hep-ex2024

Search for the decay $B^{0} \to I^^{3} I^^{3}$ using Belle and Belle II data

Belle, Belle II Collaborations, : +407

We report the result of a search for the rare decay $B^{0} \to I^^{3} I^^{3}$ using a combined dataset of $753 \times 1 0^{6}$ $B B ˉ$ pairs collected by the Belle experiment and $387\times…

Search for lepton flavor-violating decay modes B0→KS0​I¨±ℓ∓ (ℓ=I^¼,e) with hadronic B-tagging at Belle and Belle II

Search for lepton-flavor-violating I¨−→I^¼−I^¼+I^¼− decays at Belle II

Search for hb​(2P)→I^3I¨bJ​(1P) at s​=10.860 GeV

Measurement of the energy dependence of the e+e−→BBˉ, BBˉ∗, and B∗Bˉ∗ cross sections at Belle~II

Angular analysis of B→K∗e+e− in the low-q2 region with new electron identification at Belle

Search for the decay B0→I^3I^3 using Belle and Belle II data

Search for lepton flavor-violating decay modes $B^{0} \to K_{S}^{0} I ¨ ^{\pm} ℓ^{\mp} (ℓ = I^¼, e)$ with hadronic $B$ -tagging at Belle and Belle II

Search for lepton-flavor-violating $I ¨ ^{-} \to I^¼^{-} I^¼^{+} I^¼^{-}$ decays at Belle II

Search for $h_{b} (2 P) \to I^^{3} I ¨ _{b J} (1 P)$ at $s = 10.860$ GeV

Measurement of the energy dependence of the $e^{+} e^{-} \to B B ˉ$ , $B B ˉ^{}$ , and $B^{} B ˉ^{*}$ cross sections at Belle~II

Angular analysis of $B \to K^{*} e^{+} e^{-}$ in the low- $q^{2}$ region with new electron identification at Belle

Search for the decay $B^{0} \to I^^{3} I^^{3}$ using Belle and Belle II data