M. Shapkin

activity

20052024

most citedTest of lepton universality using

B^{+} \to K^{+} ℓ^{+} ℓ^{-}

decays

952 citations · 14.6k across the 275 of their papers we have counts for

collaborators

Showing 2015Show all

16 papers · 1 filter

hep-ex2015★ 9 cited

Search for the rare decays $B^{0} \to J / ψ γ$ and $B_{s}^{0} \to J / ψ γ$

LHCb collaboration, R. Aaij, C. Abellán Beteta +725

A search for the rare decay of a $B^{0}$ or $B_{s}^{0}$ meson into the final state $J / ψ γ$ is performed, using data collected by the LHCb experiment in $pp$ collisions at $\sqrt{s}=…

hep-ex2015★ 27 cited

Measurement of $C P$ violation parameters and polarisation fractions in $B_{s}^{0} \to J / ψ K^{* 0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +721

The first measurement of $C P$ asymmetries in the decay $B_{s}^{0} \to J / ψ K^{*} (892)^{0}$ and an updated measurement of its branching fraction and polarisation fractions…

hep-ex2015★ 8 cited

Measurement of $e^{+} e^{-} \to γ χ_{c J}$ via initial state radiation at Belle

Belle Collaboration, Y. L. Han, X. L. Wang +142

The process $e^{+} e^{-} \to γ χ_{c J}$ ( $J$ =1, 2) is studied via initial state radiation using 980 fb $^{- 1}$ of data at and around the $Υ (n S)$ ( $n$ =1, 2, 3, 4, 5) resonances collected wi…

hep-ex2015★ 25 cited

Measurement of the branching fraction ratio $B (B_{c}^{+} \to ψ (2 S) π^{+}) / B (B_{c}^{+} \to J / ψ π^{+})$

LHCb collaboration, R. Aaij, B. Adeva +721

Using $pp$ collision data collected by LHCb at center-of-mass energies $s$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb $^{- 1}$ , the ratio of the bran…

hep-ex2015★ 31 cited

First observation of the hadronic transition $Υ (4 S) \to η h_{b} (1 P)$ and new measurement of the $h_{b} (1 P)$ and $η_{b} (1 S)$ parameters

The Belle Collaboration, U. Tamponi, R. Mussa +156

Using a sample of $771.6 \times 1 0^{6}$ $Υ (4 S)$ decays collected by the Belle experiment at the KEKB $e^{+} e^{-}$ collider, we observe for the first time the transition $Υ(4S) \to ηh_b…

hep-ex2015★ 313 cited

Angular analysis and differential branching fraction of the decay $B_{s}^{0} \to ϕ μ^{+} μ^{-}$

LHCb collaboration, R. Aaij, B. Adeva +722

An angular analysis and a measurement of the differential branching fraction of the decay $B_{s}^{0} \to ϕ μ^{+} μ^{-}$ are presented, using data corresponding to an integrated luminosity of $…

Search for the rare decays B0→J/ψγ and Bs0​→J/ψγ

Measurement of CP violation parameters and polarisation fractions in Bs0​→J/ψK∗0 decays

Measurement of e+e−→γχcJ​ via initial state radiation at Belle

Measurement of the branching fraction ratio B(Bc+​→ψ(2S)π+)/B(Bc+​→J/ψπ+)

First observation of the hadronic transition Υ(4S)→ηhb​(1P) and new measurement of the hb​(1P) and ηb​(1S) parameters