X. Niu

activity

20142019

most citedDirect detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons

541 citations · 4.2k across the 94 of their papers we have counts for

collaborators

Showing 2015Show all

22 papers · 1 filter

hep-ex2015★ 15 cited

Observation of the Singly Cabibbo-Suppressed Decay $D^{+} \to ω π^{+}$ and Evidence for $D^{0} \to ω π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +414

Based on 2.93 fb $^{- 1}$ $e^{+} e^{-}$ collision data taken at center-of-mass energy of 3.773 GeV by the BESIII detector, we report searches for the singly Cabibbo-suppressed decays $D^{…

hep-ex2015★ 44 cited

Study of $D^{+} \to K^{-} π^{+} e^{+} ν_{e}$

M. Ablikim, M. N. Achasov, X. C. Ai +412

We present an analysis of the decay $D^{+} \to K^{-} π^{+} e^{+} ν_{e}$ based on data collected by the BESIII experiment at the $ψ (3770)$ resonance. Using a nearly background-free sample…

hep-ex2015★ 13 cited

Study of $J / ψ \to p p ˉ ϕ$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +408

Using a data sample of $1.31 \times 1 0^{9}$ $J / ψ$ events accumulated with the BESIII detector, the decay $J / ψ \to p p ˉ ϕ$ is studied via two decay modes, $ϕ\to K^{0}_{S}K^{0}_{L}…

hep-ex2015★ 70 cited

Study of decay dynamics and $C P$ asymmetry in $D^{+} \to K_{L}^{0} e^{+} ν_{e}$ decay

BESIII Collaboration, M. Ablikim, M. N. Achasov +400

Using 2.92~fb $^{- 1}$ of electron-positron annihilation data collected at $s = 3.773$ ~GeV with the BESIII detector, we obtain the first measurements of the absolute branching…

hep-ex2015★ 96 cited

Confirmation of a charged charmoniumlike state $Z_{c} (3885)^{\mp}$ in $e^{+} e^{-} \to π^{\pm} (D D ˉ^{*})^{\mp}$ with double $D$ tag

BESIII Collaboration, M. Ablikim, M. N. Achasov +400

We present a study of the process $e^{+} e^{-} \to π^{\pm} (D D ˉ^{*})^{\mp}$ using data samples of 1092~pb $^{- 1}$ at $s = 4.23$ ~GeV and 826~pb $^{- 1}$ at $s = 4.26$ ~GeV collecte…

hep-ex2015★ 7 cited

Study of Dynamics of $D^{0} \to K^{-} e^{+} ν_{e}$ and $D^{0} \to π^{-} e^{+} ν_{e}$ Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +400

In an analysis of a 2.92~fb $^{- 1}$ data sample taken at 3.773~GeV with the BESIII detector operated at the BEPCII collider, we measure the absolute decay branching fractions to be…

hep-ex2015★ 129 cited

Observation of $Z_{c} (3900)^{0}$ in $e^{+} e^{-} \to π^{0} π^{0} J / ψ$

BESIII Collaboration

Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state $Z_{c} (3900)^{0}$ with a significance of $10.4 σ$ . The mass…

hep-ex2015★ 64 cited

Measurement of azimuthal asymmetries in inclusive charged dipion production in $e^{+} e^{-}$ annihilations at $s$ = 3.65 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +398

We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process $e^{+} e^{-} \to π π X$ based on a data set of 62 $pb^{- 1}$ at the center-o…

hep-ex2015★ 15 cited

Search for $D^{0} \to γ γ$ and improved measurement of the branching fraction for $D^{0} \to π^{0} π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +412

Using $2.92$ fb $^{- 1}$ of electron-positron annihilation data collected at $s = 3.773$ ~GeV with the BESIII detector, we report the results of a search for the flavor-changin…

hep-ex2015★ 47 cited

Measurement of the Matrix Elements for the Decays $η \to π^{+} π^{-} π^{0}$ and $η / η^{'} \to π^{0} π^{0} π^{0}$

M. Ablikim, M. N. Achasov, X. C. Ai +413

Based on a sample of $1.31 \times 1 0^{9}$ $J / ψ$ events collected with the BESIII detector at the BEPCII collider, Dalitz plot analyses of selected 79,625 $η \to π^{+} π^{-} π^{0}$ …

hep-ex2015★ 4 cited

Observation of the electromagnetic doubly OZI-suppressed decay $J / ψ \to ϕ π^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +411

Using a sample of $1.31$ billion $J / ψ$ events accumulated with the BESIII detector at the BEPCII collider, we report the observation of the decay $J / ψ \to ϕ π^{0}$ , which is…

hep-ex2015★ 87 cited

Measurement of the proton form factor by studying $e^{+} e^{-} \to p p ˉ$

M. Ablikim, M. N. Achasov, X. C. Ai +409

Using data samples collected with the BESIII detector at the BEPCII collider, we measure the Born cross section of $e^{+} e^{-} \to p p ˉ$ at 12 center-of-mass energies fr…

hep-ex2015★ 50 cited

Observation and Spin-Parity Determination of the $X (1835)$ in $J / ψ \to γ K_{S}^{0} K_{S}^{0} η$

M. Ablikim, M. N. Achasov, X. C. Ai +413

We report an observation of the process $J / ψ \to γ X (1835) \to γ K_{S}^{0} K_{S}^{0} η$ at low $K_{S}^{0} K_{S}^{0}$ mass with a statistical significance larger than 12.9 $σ$ using a data…

hep-ex2015★ 60 cited

An amplitude analysis of the $π^{0} π^{0}$ system produced in radiative $J / ψ$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +417

An amplitude analysis of the $π^{0} π^{0}$ system produced in radiative $J / ψ$ decays is presented. In particular, a piecewise function that describes the dynamics of the $π^{0}π^{0}…

hep-ex2015★ 5 cited

Measurement of $B (ψ (3770) \to γ χ_{c 1})$ and search for $ψ (3770) \to γ χ_{c 2}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +411

We report a measurement of the branching fraction of $ψ (3770) \to γ χ_{c 1}$ and search for the transition $ψ (3770) \to γ χ_{c 2}$ based on 2.92~fb $^{- 1}$ of $e^{+} e^{-}$ data accumul…

hep-ex2015★ 14 cited

An Improved Limit for Gamma_ee of X(3872) and Gamma_ee Measurement of psi(3686)

BESIII collaboration, M. Ablikim, M. N. Achasov +411

Using the data sets taken at center-of-mass energies above 4 GeV by the BESIII detector at the BEPCII storage ring, we search for the reaction e+e- -> gamma_ISR X(3872) -> gamma_IS…

hep-ex2015★ 11 cited

Search for the isospin violating decay $Y (4260) \to J / ψ η π^{0}$

M. Ablikim, M. N. Achasov, X. C. Ai +410

Using data samples collected at center of mass energies of $s$ = 4.009, 4.226, 4.257, 4.358, 4.416 and 4.599 GeV with the BESIII detector operating at the BEPCII storage rin…

hep-ex2015★ 61 cited

Observation of the Dalitz Decay $η^{'} \to γ e^{+} e^{-}$

M. Ablikim, M. N. Achasov, X. C. Ai +410

We report the first observation of the Dalitz decay $η^{'} \to γ e^{+} e^{-}$ , based on a data sample of 1.31 billion $J / ψ$ events collected with the BESIII detector. The $η^{'}$ mesons are pr…

hep-ex2015★ 45 cited

Measurement of the $e^{+} e^{-} \to η J / ψ$ cross section and search for $e^{+} e^{-} \to π^{0} J / ψ$ at center-of-mass energies between 3.810 and 4.600~GeV

M. Ablikim, M. N. Achasov, X. C. Ai +409

Using data samples collected with the BESIII detector operating at the BEPCII collider at center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of $e^{+}e^{-} \to ηJ/…

hep-ex2015★ 64 cited

Observation of the $ψ (1^{3} D_{2})$ state in $e^{+} e^{-} \to π^{+} π^{-} γ χ_{c 1}$ at BESIII

M. Ablikim, M. N. Achasov, X. C. Ai +409

We report the observation of the $X (3823)$ in the process $e^{+} e^{-} \to π^{+} π^{-} X (3823) \to π^{+} π^{-} γ χ_{c 1}$ with a statistical significance of $6.2 σ$ , in data samples at center-of-mass e…

hep-ex2015★ 106 cited

Study of $χ_{c J}$ decaying into $ϕ$ $K^{*} (892)$ $K ˉ$

M. Ablikim, M. N. Achasov, X. C. Ai +409

Using a data sample of 106 million $ψ (3686)$ events collected with the BESIII detector operated at the BEPCII storage ring, we study for the first time the decay $χ_{cJ}\toϕK^{0}_S…

hep-ex2015★ 2 cited

Searches for isospin-violating transitions $χ_{c 0, 2} \to π^{0} η_{c}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +407

We present the first upper-limit measurement of the branching fractions of the isospin-violating transitions $χ_{c 0, 2} \to π^{0} η_{c}$ . The measurements are performed usin…

Observation of the Singly Cabibbo-Suppressed Decay D+→ωπ+ and Evidence for D0→ωπ0

Study of D+→K−π+e+νe​

Study of J/ψ→ppˉ​ϕ at BESIII

Study of decay dynamics and CP asymmetry in D+→KL0​e+νe​ decay

Confirmation of a charged charmoniumlike state Zc​(3885)∓ in e+e−→π±(DDˉ∗)∓ with double D tag

Study of Dynamics of D0→K−e+νe​ and D0→π−e+νe​ Decays

Observation of Zc​(3900)0 in e+e−→π0π0J/ψ

Measurement of azimuthal asymmetries in inclusive charged dipion production in e+e− annihilations at s​ = 3.65 GeV

Search for D0→γγ and improved measurement of the branching fraction for D0→π0π0

Measurement of the Matrix Elements for the Decays η→π+π−π0 and η/η′→π0π0π0

Observation of the electromagnetic doubly OZI-suppressed decay J/ψ→ϕπ0

Measurement of the proton form factor by studying e+e−→ppˉ​

Observation and Spin-Parity Determination of the X(1835) in J/ψ→γKS0​KS0​η

An amplitude analysis of the π0π0 system produced in radiative J/ψ decays

Measurement of B(ψ(3770)→γχc1​) and search for ψ(3770)→γχc2​

An Improved Limit for Gamma_ee of X(3872) and Gamma_ee Measurement of psi(3686)

Search for the isospin violating decay Y(4260)→J/ψηπ0

Observation of the Dalitz Decay η′→γe+e−

Measurement of the e+e−→ηJ/ψ cross section and search for e+e−→π0J/ψ at center-of-mass energies between 3.810 and 4.600~GeV

Observation of the ψ(13D2​) state in e+e−→π+π−γχc1​ at BESIII

Study of χcJ​ decaying into ϕ K∗(892) Kˉ

Searches for isospin-violating transitions χc0,2​→π0ηc​

Observation of the Singly Cabibbo-Suppressed Decay $D^{+} \to ω π^{+}$ and Evidence for $D^{0} \to ω π^{0}$

Study of $D^{+} \to K^{-} π^{+} e^{+} ν_{e}$

Study of $J / ψ \to p p ˉ ϕ$ at BESIII

Study of decay dynamics and $C P$ asymmetry in $D^{+} \to K_{L}^{0} e^{+} ν_{e}$ decay

Confirmation of a charged charmoniumlike state $Z_{c} (3885)^{\mp}$ in $e^{+} e^{-} \to π^{\pm} (D D ˉ^{*})^{\mp}$ with double $D$ tag

Study of Dynamics of $D^{0} \to K^{-} e^{+} ν_{e}$ and $D^{0} \to π^{-} e^{+} ν_{e}$ Decays

Observation of $Z_{c} (3900)^{0}$ in $e^{+} e^{-} \to π^{0} π^{0} J / ψ$

Measurement of azimuthal asymmetries in inclusive charged dipion production in $e^{+} e^{-}$ annihilations at $s$ = 3.65 GeV

Search for $D^{0} \to γ γ$ and improved measurement of the branching fraction for $D^{0} \to π^{0} π^{0}$

Measurement of the Matrix Elements for the Decays $η \to π^{+} π^{-} π^{0}$ and $η / η^{'} \to π^{0} π^{0} π^{0}$

Observation of the electromagnetic doubly OZI-suppressed decay $J / ψ \to ϕ π^{0}$

Measurement of the proton form factor by studying $e^{+} e^{-} \to p p ˉ$

Observation and Spin-Parity Determination of the $X (1835)$ in $J / ψ \to γ K_{S}^{0} K_{S}^{0} η$

An amplitude analysis of the $π^{0} π^{0}$ system produced in radiative $J / ψ$ decays

Measurement of $B (ψ (3770) \to γ χ_{c 1})$ and search for $ψ (3770) \to γ χ_{c 2}$

Search for the isospin violating decay $Y (4260) \to J / ψ η π^{0}$

Observation of the Dalitz Decay $η^{'} \to γ e^{+} e^{-}$

Measurement of the $e^{+} e^{-} \to η J / ψ$ cross section and search for $e^{+} e^{-} \to π^{0} J / ψ$ at center-of-mass energies between 3.810 and 4.600~GeV

Observation of the $ψ (1^{3} D_{2})$ state in $e^{+} e^{-} \to π^{+} π^{-} γ χ_{c 1}$ at BESIII

Study of $χ_{c J}$ decaying into $ϕ$ $K^{*} (892)$ $K ˉ$

Searches for isospin-violating transitions $χ_{c 0, 2} \to π^{0} η_{c}$