J. Becker

activity

20112020

most citedObservation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c

459 citations · 1.3k across the 17 of their papers we have counts for

collaborators

18 papers

hep-ex2020

Measurements of branching fractions and CP-violating charge asymmetries in charmless $B$ decays reconstructed in 2019--2020 Belle~II data

Belle II Collaboration, F. Abudinén, I. Adachi +544

We report on first measurements of branching fractions~( $B$ ) and CP-violating charge asymmetries~( $A$ ) in charmless $B$ decays at Belle~II. We use a sample of e…

hep-ex2020★ 2 cited

Studies of the semileptonic $B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{ℓ}$ and $B^{-} \to D^{0} ℓ^{-} ν ˉ_{ℓ}$ decay processes with 34.6 fb $^{- 1}$ of Belle II data

Belle II Collaboration, F. Abudinén, I. Adachi +542

We report measurements of the $B ˉ^{0} \to D^{*+} ℓ^{-} ν ˉ_{l}$ and $B^{-} \to D^{0} ℓ^{-} ν ˉ_{l}$ processes using 34.6 fb $^{- 1}$ of collision events recorded by the Belle…

hep-ex2020★ 1 cited

Measurement of the $B^{0}$ lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Belle II Collaboration, F. Abudinén, I. Adachi +534

This document presents the measurement of $B^{0}$ meson lifetimes using the 2019 Belle II dataset that corresponds to an integrated luminosity of $8.7 \pm 0.2$ fb $^{- 1}$ . Each candid…

hep-ex2013★ 310 cited

Observation of a charged (DDbar)- mass peak in e+e- --> pi+ (DDbar)- at Ecm=4.26 GeV

M. Ablikim, M. N. Achasov, O. Albayrak +1

We report on a study of the process e+e- --> pi+(D D*bar)- at Ecm=4.26 GeV using a 525 /pb data sample collected with the BESIII detector at the BEPCII storage ring. A distinct cha…

hep-ex2013★ 459 cited

Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c

BESIII Collaboration, M. Ablikim, M. N. Achasov +361

We study e+e- --> pi+pi-h_c at center-of-mass energies from 3.90 GeV to 4.42 GeV using data samples collected with the BESIII detector operating at the Beijing Electron Positron Co…

hep-ex2013★ 297 cited

Observation of a charged charmoniumlike structure in $e^{+} e^{-} \to (D^{} D ˉ^{})^{\pm} π^{\mp}$ at $s = 4.26$ GeV

BESIII collaboration, M. Ablikim, M. N. Achasov +358

We study the process $e^{+} e^{-} \to (D^{*} D ˉ^{*})^{\pm} π^{\mp}$ at a center-of-mass energy of 4.26GeV using a 827pb $^{- 1}$ data sample obtained with the BESIII detector at the Be…

hep-ex2013★ 22 cited

Precision Measurements of $B [ψ (3686) \to π^{+} π^{-} J / ψ]$ and $B [J / ψ \to l^{+} l^{-}]$

BESIII Collaboration, M. Ablikim, M. N. Achasov +356

Based on $(106.41 \pm 0.86) \times 1 0^{6}$ $ψ (3686)$ events collected with the BESIII detector at the BEPCII collider, the branching fractions of $ψ (3686) \to π^{+} π^{-} J / ψ$ , $J/ψ\to e…

hep-ex2013★ 28 cited

Observation of a structure at 1.84 GeV/c $^{2}$ in the $3 (π^{+} π^{-})$ mass spectrum in $J / ψ \to γ 3 (π^{+} π^{-})$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +362

With a sample of 225.3 million $J / ψ$ events taken with the BESIII detector, the decay $J / ψ \to γ 3 (π^{+} π^{-})$ is analyzed. A structure at 1.84 GeV/c $^{2}$ is observed in the $3(π…

hep-ex2013★ 16 cited

Search for the Lepton Flavor Violation Process $J / ψ \to e μ$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +361

We search for the lepton-flavor-violating decay of the $J / ψ$ into an electron and a muon using $(225.3 \pm 2.8) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector at the B…

hep-ex2012★ 24 cited

Search for $η$ and $η^{'}$ Invisible Decays in $J / ψ \to ϕ η$ and $ϕ η^{'}$

M. Ablikim, M. N. Achasov, O. Albayrak +340

Using a sample of $(225.3 \pm 2.8) \times 1 0^{6}$ $J / ψ$ decays collected with the BESIII detector at BEPCII, searches for invisible decays of $η$ and $η^{'}$ in $J / ψ \to ϕ η$ and $ϕη…

hep-ex2012

First observation of the isospin violating decay $J / ψ \to Λ Σ ˉ^{0} + c . c .$

M. Ablikim, M. N. Achasov, D. J. Ambrose +353

Using a sample of $(225.2 \pm 2.8) \times 1 0^{6}$ $J / ψ$ events collected with the BESIII detector, we present results of a study of $J / ψ \to γ Λ Λ ˉ$ and report the first observ…

hep-ex2012★ 44 cited

Observation of $e^{+} e^{-} \to η J / ψ$ at center-of-mass energy $s q r t s = 4.009$ GeV

The BESIII Collaboration, M. Ablikim, M. N. Achasov +339

Using a 478 pb $^{- 1}$ data sample collected with the BESIII detector operating at the BEPCII storage ring at a center-of-mass energy of $s = 4.009$ GeV, the production of $e^{…

hep-ex2012★ 18 cited

Evidence for $η_{c} \to γ γ$ and Measurement of $J / ψ \to 3 γ$

BESIII Collaboration, M. Ablikim, M. N. Achasov +340

The decay of $J / ψ$ to three photons is studied using $ψ (3686) \to π^{+} π^{-} J / ψ$ in a sample of $1.0641 \times 1 0^{8}$ $ψ (3686)$ events collected with the BESIII detector. Evidence of the di…

hep-ex2012

First observation of the M1 transition $ψ (3686) \to γ η_{c} (2 S)$

M. Ablikim, M. N. Achasov, D. J. Ambrose +356

Using a sample of 106 million ψ(3686) events collected with the BESIII detector at the BEPCII storage ring, we have made the first measurement of the M1 transition between the radi…

hep-ex2012★ 20 cited

Two-photon widths of the $χ_{c 0, 2}$ states and helicity analysis for $χ_{c2}\arγγ$}

BESIII Collaboration, M. Ablikim, M. N. Achasov +354

Based on a data sample of 106 M $ψ^{'}$ events collected with the BESIII detector, the decays $ψ^{\prime}\arγχ_{c0, 2}$,$χ_{c0, 2}\arγγ$ are studied to determine the two-photo…

hep-ex2012★ 99 cited

First observation of $η (1405)$ decays into $f_{0} (980) π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +332

The decays $J / ψ \to γ π^{+} π^{-} π^{0}$ and $J / ψ \to γ π^{0} π^{0} π^{0}$ are analyzed using a sample of 225 million $\jpsi$ events collected with the BESIII detector. The decay of $η…

hep-ex2011

Measurements of the mass and width of the eta_c using psi' -> gamma eta_c

BESIII Collaboration, M. Ablikim, M. N. Achasov +332

The mass and width of the lowest lying S-wave spin singlet charmonium state, the eta_c, are measured using a data sample of 1.06x10^8 psi' decays collected with the BESIII detector…

hep-ex2011★ 7 cited

Search for CP and $P$ violating pseudoscalar decays into $π π$

The BESIII Collaboration, M. Ablikim

Using a sample of $(225.2 \pm 2.8) \times 1 0^{6}$ $J / ψ$ events collected with the Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider, CP and $P$ violating decays o…

Measurements of branching fractions and CP-violating charge asymmetries in charmless B decays reconstructed in 2019--2020 Belle~II data

Studies of the semileptonic Bˉ0→D∗+ℓ−νˉℓ​ and B−→D0ℓ−νˉℓ​ decay processes with 34.6 fb−1 of Belle II data

Measurement of the B0 lifetime using fully reconstructed hadronic decays in the 2019 Belle II dataset

Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV

Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c

Observation of a charged charmoniumlike structure in e+e−→(D∗Dˉ∗)±π∓ at s​=4.26GeV

Precision Measurements of B[ψ(3686)→π+π−J/ψ] and B[J/ψ→l+l−]

Observation of a structure at 1.84 GeV/c2 in the 3(π+π−) mass spectrum in J/ψ→γ3(π+π−) decays

Search for the Lepton Flavor Violation Process J/ψ→eμ at BESIII

Search for η and η′ Invisible Decays in J/ψ→ϕη and ϕη′

First observation of the isospin violating decay J/ψ→ΛΣˉ0+c.c.

Observation of e+e−→ηJ/ψ at center-of-mass energy sqrts=4.009 GeV

Evidence for ηc​→γγ and Measurement of J/ψ→3γ

First observation of the M1 transition ψ(3686)→γηc​(2S)

Two-photon widths of the χc0,2​ states and helicity analysis for $χ_{c2}\arγγ$}

First observation of η(1405) decays into f0​(980)π0