S. Lusso

Measurement of $e^{+} e^{-} \to K^{+} K^{-}$ cross section at $s = 2.00 - 3.08$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +455

The cross section of the process $e^{+} e^{-} \to K^{+} K^{-}$ is measured at a number of center-of-mass energies $s$ from 2.00 to 3.08 GeV with the BESIII detector…

Study of the process $e^{+} e^{-} \to p p ˉ$ via initial state radiation at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +476

The Born cross section for the process $e^{+} e^{-} \to p p ˉ$ is measured using the initial state radiation technique with an undetected photon. This analysis is based on datasets…

hep-ex2022

Measurement of the $D \to K^{-} I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ and $D \to K^{-} I ¨ ^{+} I ¨ ^{0}$ coherence factors and average strong-phase differences in quantum-correlated $D D ˉ$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +505

The decays $D \to K^{-} I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ and $D \to K^{-} I ¨ ^{+} I ¨ ^{0}$ are studied in a sample of quantum-correlated $D D ˉ$ pairs produced through the process $e^+e^- \to Ï(3770) \to D\bar…

Search for the rare decays $D \to h (h^{'}) e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +455

We search for rare decays of $D$ mesons to hadrons accompany with an electron-positron pair (h(h') $e^{+} e^{-}$ ), using an $e^{+} e^{-}$ collision sample corresponding to an integrated lumin…

Measurements of the center-of-mass energies of $e^{+} e^{-}$ collisions at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +504

During the 2016-17 and 2018-19 running periods, the BESIII experiment collected 7.5~fb $^{- 1}$ of $e^{+} e^{-}$ collision data at center-of-mass energies ranging from 4.13 to 4.44 GeV. T…

Measurement of the absolute branching fraction of $I^_{c}^{+} \to p K_{S}^{0} I^\cdot$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +490

Based on 586 $p b^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at a center-of-mass energy of $s = 4.6 GeV$ with the BESIII detector at the BEPCII collider, the absol…

Observation of the $X (2370)$ and search for the $X (2120)$ in $J / I ¨ \to I^^{3} K K ˉ I^\cdot^{'}$

M. Ablikim, M. N. Achasov, P. Adlarson +473

Using a sample of $1.31 \times 1 0^{9} J / I ¨ $ events collected with the BESIII detector, we perform a study of $J / I ¨ \to I^^{3} K K ˉ I^\cdot^{'}$ . The $X (2370)$ is observed in the $K K ˉ I^\cdot^{'}$ i…

Improved model-independent determination of the strong-phase difference between $D^{0}$ and $D ˉ^{0} \to K_{S, L}^{0} K^{+} K^{-}$ decays

M. Ablikim, M. N. Achasov, P. Adlarson +489

We present a measurement of the strong-phase difference between $D^{0}$ and $D ˉ^{0} \to K_{S, L}^{0} K^{+} K^{-}$ decays, performed through a study of quantum-entangled pairs…

Model-independent determination of the relative strong-phase difference between $D^{0}$ and $D ˉ^{0} \to K_{S, L}^{0} I ¨ ^{+} I ¨ ^{-}$ and its impact on the measurement of the CKM angle $I^^{3} / I ¨ _{3}$

M. Ablikim, M. N. Achasov, P. Adlarson +483

Crucial inputs for a variety of $C P$ -violation studies can be determined through the analysis of pairs of quantum-entangled neutral $D$ mesons, which are produced in the decay of t…

Measurement of the Integrated Luminosities of Cross-section Scan Data Samples Around the $I ¨ (3770)$ Mass Region

M. Ablikim, M. N. Achasov, S. Ahmed +460

To investigate the nature of the $I ¨ (3770)$ resonance and to measure the cross section for $e^{+} e^{-} \to D D ˉ$ , a cross-section scan data sample, distributed among 41 center-of-m…

Measurement of the Born Cross Sections for $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2460)^{-} + c . c .$ and $e^{+} e^{-} \to D_{s}^{*+} D_{s 1} (2460)^{-} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

The processes $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2460)^{-} + c . c .$ and $e^{+} e^{-} \to D_{s}^{*+} D_{s 1} (2460)^{-} + c . c .$ are studied for the first time using data samples collected with the BESIII d…

Measurements of the branching fractions of $I^\cdot_{c} \to K^{+} K^{-} I ¨ ^{0}$ , $K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ , $2 (I ¨ ^{+} I ¨ ^{-} I ¨ ^{0})$ , and $p p ˉ$

M. Ablikim, M. N. Achasov, S. Ahmed +447

Using data samples collected with the BESIII detector at center-of-mass energies $s = 4.23, 4.26, 4.36,$ and $4.42$ ~\rm{GeV}, we measure the branching fractions of $Î·_c\to…

Observation of $D^{0 (+)} \to K_{S}^{0} I ¨ ^{0 (+)} I^\cdot^{'}$ and improved measurement of $D^{0} \to K^{-} I ¨ ^{+} I^\cdot^{'}$

M. Ablikim, M. N. Achasov, S. Ahmed +459

By analyzing $2.93 f b^{- 1}$ of data taken at a center-of-mass energy of 3.773~GeV with the BESIII detector, we measure the branching fractions of the Cabibbo-favored hadronic…

Search for the decay $D_{s}^{+} \to p p ˉ e^{+} I^½_{e}$

M. Ablikim, M. N. Achasov, P. Adlarson +469

Using a $3.19 fb^{- 1}$ data sample collected at the $s = 4.178$ GeV with the BESIII detector, we search for the rare decay $D_{s}^{+} \rightarrow p \bar{p} e^{+} Î½…

Cross section measurements of $e^{+} e^{-} \to I ¨ I ¨ _{c 0}$ from $s =$ 4.178 to 4.278 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +474

The cross section of the process $e^{+} e^{-} \to I ¨ I ¨ _{c 0}$ is measured at center-of-mass energies from $s =$ 4.178 to 4.278 GeV using a data sample of 7 fb $^{- 1}$ colle…

Polarization and Entanglement in Baryon-Antibaryon Pair Production in Electron-Positron Annihilation

BESIII Collaboration, M. Ablikim, M. N. Achasov +465

Using a sample of $1.31 \times 1 0^{9}$ $J / I ¨ $ events collected with the BESIII detector, we report the first observation of spin polarization of $I^$ and $I^ˉ $ hyperons from the co…

Amplitude analysis of $D^{+} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$

M. Ablikim, M. N. Achasov, S. Ahmed +458

The decay $D^{+} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ is studied with an amplitude analysis using a data set of 2.93${\mbox{\,fb}^{-1}}$ of $e^{+} e^{+}$ collisions at the $Ï(37…

Weak phases and CP-symmetry tests in sequential decays of entangled double-strange baryons

M. Ablikim, M. N. Achasov, P. Adlarson +503

Using a sample of $1.31 \times 1 0^{9}$ $J / I ¨ $ events collected with the BESIII detector at the electron-positron collider BEPCII, we analyse the full $J / I ¨ \to$ $I^^{-} I^^{+}$ , $Î…

Future Physics Programme of BESIII

M. Ablikim, M. N. Achasov, P. Adlarson +482

There has recently been a dramatic renewal of interest in the subjects of hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plet…

hep-ex2016

Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR

PANDA Collaboration, B. P. Singh, W. Erni +532

Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description fo…

Observation of the decay $X (3872) \to I ¨ ^{0} I ¨ _{c 1} (1 P)$

BESIII Collaboration, M. Ablikim, M. N. Achasov +468

Using a total of $9.0 fb^{- 1}$ of $e^{+} e^{-}$ collision data with center-of-mass energies between 4.15 and 4.30 GeV collected by the BESIII detector, we search for the proces…

Amplitude analysis and branching fraction measurement of $D_{s}^{+} \to K^{+} K^{-} I ¨ ^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

We report an amplitude analysis and branching fraction measurement of $D_{s}^{+} \to K^{+} K^{-} I ¨ ^{+}$ decay using a data sample of 3.19 $f b^{- 1}$ recorded with BESIII…

Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +505

The electromagnetic process $e^{+} e^{-} \to p p ˉ$ is studied with the initial-state-radiation technique using 7.5 fb $^{- 1}$ of data collected by the BESIII experiment at seven e…

Study of BESIII Trigger Efficiencies with the 2018 $J / I ¨ $ Data

BESIII Collaboration, M. Ablikim, M. N. Achasov +489

Using a dedicated data sample taken in 2018 on the $J / I ¨ $ peak, we perform a detailed study of the trigger efficiencies of the BESIII detector. The efficiencies are determined from…

Amplitude Analysis and Branching Fraction Measurement of $D^{0} \to K^{-} I ¨ ^{+} I ¨ ^{0} I ¨ ^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +476

Utilizing the dataset corresponding to an integrated luminosity of $2.93$ fb $^{- 1}$ at $s = 3.773$ GeV collected by the BESIII detector, we report the first amplitude analysis…

Observation of a structure in $e^{+} e^{-} \to I ¨ I^\cdot^{'}$ at $s$ from 2.05 to 3.08 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +498

The process $e^{+} e^{-} \to I ¨ I^\cdot^{'}$ has been studied for the first time in detail using data sample collected with the BESIII detector at the BEPCII collider at center of ma…

hep-ex2016

Feasibility studies of time-like proton electromagnetic form factors at PANDA at FAIR

PANDA Collaboration, B. Singh, W. Erni +502

Simulation results for future measurements of electromagnetic proton form factors at \PANDA (FAIR) within the PandaRoot software framework are reported. The statistical precision w…

Search for invisible decays of $I ¨ $ and $I ¨ $ with $J / I ¨ $ data at BESIII

M. Ablikim, M. N. Achasov, S. Ahmed +458

Using a data sample of $(1310.6 \pm 7.0) \times 1 0^{6}$ $J / I ¨ $ events collected with the BESIII detector operating at the BEPCII collider, we perform the first experimental search for…

Study of $e^{+} e^{-} \to D^{+} D^{-} I ¨ ^{+} I ¨ ^{-}$ at center-of-mass energies from 4.36 to 4.60 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +476

We report a study of the $e^{+} e^{-} \to D^{+} D^{-} I ¨ ^{+} I ¨ ^{-}$ process using $e^{+} e^{-}$ collision data samples with an integrated luminosity of $2.5 fb^{- 1}$ at center…

physics.ins-det2019

Triple GEM performance in magnetic field

M. Alexeev, A. Amoroso, S. Bagnasco +65

Performance of triple GEM prototypes in strong magnetic field has been evaluated bymeans of a muon beam at the H4 line of the SPS test area at CERN. Data have been reconstructedand…

Search for the $X (2370)$ and observation of $I^\cdot_{c} \to I^\cdot I^\cdot I^\cdot^{'}$ in $J / I ¨ \to I^^{3} I^\cdot I^\cdot I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +491

Using a sample of $1.31 \times 1 0^{9} J / I ¨ $ events collected with the BESIII detector, we perform a study of $J / I ¨ \to I^^{3} I^\cdot I^\cdot I^\cdot^{'}$ to search for the $X (2370)$ and $I^\cdot_{c}$ in t…

Search for rare decay $J / I ¨ \to I ¨ e^{+} e^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +462

Using a data sample of $448.1 \times 1 0^{6}$ $I ¨ (3686)$ events collected at $s =$ 3.686 GeV with the BESIII detector at the BEPCII, we search for the rare decay $J/Ï\to Ïe^+ e^…

Search for the decay $J / I ¨ \to I^^{3} + invisible$

M. Ablikim, M. N. Achasov, P. Adlarson +484

We search for $J / I ¨ $ radiative decays into a weakly interacting neutral particle, namely an invisible particle, using the $J / I ¨ $ produced through the process $Ï(3686)\toÏ^+Ï^-J/…

Inclusive charged and neutral particle multiplicity distributions in $I ¨ _{c J}$ and $J / I ¨ $ decays

BESIII collaboration, M. Ablikim, M. N. Achasov +474

Using a sample of 106 million $I ¨ (3686)$ decays, $I ¨ (3686) \to I^^{3} I ¨ _{c J} (J = 0, 1, 2)$ and $I ¨ (3686) \to I^^{3} I ¨ _{c J}, I ¨ _{c J} \to I^^{3} J / I ¨ $ $(J = 1, 2)$ events are utilized to study i…

Study of electromagnetic Dalitz decays $I ¨ _{c J} \to I^¼^{+} I^¼^{-} J / I ¨ $

M. Ablikim, M. N. Achasov, S. Ahmed +449

Using $4.48 \times 1 0^{8}$ $I ¨ (3686)$ events collected with the BESIII detector, we search for the decays $I ¨ _{c J} \to I^¼^{+} I^¼^{-} J / I ¨ $ through the radiative decays $Ï(36…

Determination of strong-phase parameters in $D \to K_{S, L}^{0} I ¨ ^{+} I ¨ ^{-}$

M. Ablikim, M. N. Achasov, P. Adlarson +483

We report the most precise measurements to date of the strong-phase parameters between $D^{0}$ and $D ˉ^{0}$ decays to $K_{S, L}^{0} I ¨ ^{+} I ¨ ^{-}$ using a sample of 2.93 fb $^{- 1}$ of $e^+e…

Search for the semileptonic decay $D^{0 (+)} \to b_{1} (1235)^{- (0)} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +491

Using $2.93 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at a center-of-mass energy $s = 3.773$ GeV with the BESIII detector operating at the BEPCII collider, we…

Measurements of Absolute Branching Fractions for $I^_{c}^{+} \to I^^{0} K^{+}$ and $I^ (1530)^{0} K^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +435

We report the first measurements of absolute branching fractions for the $W$ -exchange-only processes $I^_{c}^{+} \to I^^{0} K^{+}$ and $I^_{c}^{+} \to I^ (1530)^{0} K^{+}$ with the double-tag technique,…

physics.ins-det2019

GRAAL: Gem Reconstruction And Analysis Library

R. Farinelli, M. Alexeev, A. Amoroso +47

MPGD are the new frontier in gas trackers. Among this kind of devices, theGEM chambers are widely used. The experimental signals acquired with the detector mustobviously be reconst…

Observation of the leptonic decay $D^{+} \to I ¨ ^{+} I^½_{I ¨} $

BESIII Collaboration, M. Ablikim, M. N. Achasov +479

We report the first observation of $D^{+} \to I ¨ ^{+} I^½_{I ¨} $ with a significance of $5.1 I ¨ $ . We measure ${\cal B}(D^+\toÏ^+Î½_Ï) = (1.20\pm0.24_{\text{stat.}}\pm0.12_{\text{syst.}})\time…

Measurement of branching fractions for $D$ meson decaying into $I ¨ $ meson and a pseudoscalar meson

M. Ablikim, M. N. Achasov, P. Adlarson +473

The four decay modes $D^{0} \to I ¨ I ¨ ^{0}$ , $D^{0} \to I ¨ I^\cdot$ , $D^{+} \to I ¨ I ¨ ^{+}$ , and $D^{+} \to I ¨ K^{+}$ are studied by using a data sample taken at the centre-of-mass energy $\sqrt{s} =…

Search for heavy Majorana neutrino in lepton number violating decays of D-> K pi e+ e+

BESIII Collaboration, M. Ablikim, M. N. Achasov +456

Using the data sample of an integrated luminosity of 2.93 fb $^{- 1}$ taken at the center-of-mass energy of 3.773 GeV, we search for the Majorana neutrino in the lepton number violat…

physics.ins-det2012

Technical Design Report for the: PANDA Micro Vertex Detector

PANDA Collaboration, W. Erni, I. Keshelashvili +454

This document illustrates the technical layout and the expected performance of the Micro Vertex Detector (MVD) of the PANDA experiment. The MVD will detect charged particles as clo…

Observation of $D^{0} \to K_{1} (1270)^{-} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +507

Using 2.93 fb $^{- 1}$ of $e^{+} e^{-}$ collision data taken with the BESIII detector at a center-of-mass energy of 3.773 $GeV$ , the observation of the $D^{0} \to K_{1} (1270)^{-} e^{+} I^½_{e}$ …

Measurement of the absolute branching fraction of the inclusive decay $I^_{c}^{+} \to K_{S}^{0} X$

M. Ablikim, M. N. Achasov, P. Adlarson +485

We report the first measurement of the absolute branching fraction of the inclusive decay $I^_{c}^{+} \to K_{S}^{0} X$ . The analysis is performed using an $e^{+} e^{-}$ collision data sample cor…

Observation of the decays $I ¨ _{c J} \to I ¨ I ¨ I^\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +481

Using a data sample of $(448.1 \pm 2.9) \times 1 0^{6}$ $I ¨ (3686)$ decays collected by the BESIII detector at the Beijing Electron Positron Collider (BEPCII), we observe the decays $Ï_…

Evidence for $Z_{c}^{\pm}$ decays into the $I ¨ ^{\pm} I^\cdot_{c}$ final state

M. Ablikim, M. N. Achasov, S. Ahmed +458

We study $e^{+} e^{-}$ collisions with a $I ¨ ^{+} I ¨ ^{-} I ¨ ^{0} I^\cdot_{c}$ final state using data samples collected with the BESIII detector at center-of-mass energies $s = 4.226$ , $4…

Complete measurement of $I^$ electromagnetic form factors

M. Ablikim, M. N. Achasov, P. Adlarson +475

The exclusive process $e^{+} e^{-} \to I^ I^ˉ $ , with $I^ \to p I ¨ ^{-}$ and $I^ˉ \to p ˉ I ¨ ^{+}$ , has been studied at $s =$ 2.396 GeV for measurement of the $I^$ electric…

Precision measurement of the $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$ cross section near threshold

M. Ablikim, M. N. Achasov, S. Ahmed +445

The Born cross section of the $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$ process is measured with unprecedented precision using data collected with the BESIII detector at $…

Amplitude analysis of $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{0} I^\cdot$ and first observation of the pure $W$ -annihilation decays $D_{s}^{+} \to a_{0} (980)^{+} I ¨ ^{0}$ and $D_{s}^{+} \to a_{0} (980)^{0} I ¨ ^{+}$

M. Ablikim, M. N. Achasov, P. Adlarson +474

We present the first amplitude analysis of the decay $D_{s}^{+} \to I ¨ ^{+} I ¨ ^{0} I^\cdot$ . We use an $e^{+} e^{-}$ collision data sample corresponding to an integrated luminosity…

hep-ex2023

Search for $I^ˉ $ - $I^$ oscillations in the decay $J / I ¨ \to p K^{-} I^ˉ + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +454

We report the first search for $I^ˉ $ -- $I^$ oscillations in the decay $J / I ¨ \to p K^{-} I^ˉ + c . c .$ by analyzing $1.31 \times 1 0^{9}$ $J / I ¨ $ events accumulated with the BESIII detect…

Measurement of the Branching Fraction of and Search for a CP-Violating Asymmetry in $I^\cdot^{'} \to I ¨ ^{+} I ¨ ^{-} e^{+} e^{-}$ at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +487

The rare decay $I^\cdot^{'} \to I ¨ ^{+} I ¨ ^{-} e^{+} e^{-}$ is studied using a sample of $1.3 \times 1 0^{9}$ $J / I ¨ $ events collected with the BESIII detector at BEPCII in 2009 and 2012. The branching…

Observation of di-structures in $e^{+} e^{-} \to J / I ¨ X$ at center-of-mass energies around 3.773 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +477

We report a measurement of the observed cross sections of the inclusive $J / I ¨ $ production in $e^{+} e^{-} \to J / I ¨ X$ based on 3.21 fb $^{- 1}$ of data accumulated at energi…

Observation of the $Y (4220)$ and $Y (4360)$ in the process $e^{+} e^{-} \to I^\cdot J / I ¨ $

M. Ablikim, M. N. Achasov, P. Adlarson +483

The cross sections of the process $e^{+} e^{-} \to I^\cdot J / I ¨ $ at center-of-mass energies ( $s$ ) between 3.81 and 4.60 GeV are measured with high precision by using data samples c…

Observation of $I^\cdot_{c} \to I ¨ I ¨ $ in $J / I ¨ \to I^^{3} I ¨ I ¨ $

M. Ablikim, M. N. Achasov, S. Ahmed +451

Using a sample of $(1310.6 \pm 7.0) \times 1 0^{6}$ $J / I ¨ $ events recorded with the BESIII detector at the symmetric electron positron collider BEPCII, we report the observation of the de…

Search for baryon and lepton number violating decays $D^{+} \to I^ˉ (I^ˉ £^{0}) e^{+}$ and $D^{+} \to I^ (I^£^{0}) e^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +480

Using a 2.93 fb $^{- 1}$ data sample of electron-positron collisions taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, which corresponds to $(8296\pm31\pm64)\ti…

Cross sections for the reactions $e^{+} e^{-} \to K^{+} K^{-} I ¨ ^{+} I ¨ ^{-} (I ¨ ^{0})$ , $K^{+} K^{-} K^{+} K^{-} (I ¨ ^{0})$ , $I ¨ ^{+} I ¨ ^{-} I ¨ ^{+} I ¨ ^{-} (I ¨ ^{0})$ , $p p ˉ I ¨ ^{+} I ¨ ^{-} (I ¨ ^{0})$ in the energy region between 3.773 and 4.600 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +500

Using the data samples collected in the energy range from 3.773 to 4.600 GeV with the BESIII detector at the BEPCII collider, we measure the dressed cross sections as a function of…

Cross section measurement of $e^{+} e^{-} \to p p ˉ I^\cdot$ and $e^{+} e^{-} \to p p ˉ I ¨ $ at center-of-mass energies between 3.773 GeV and 4.6 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +482

Based on $14.7 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data collected with the BESIII detector at the BEPCII collider at 17 different center-of-mass energies between $3.7730~\te…

Search for the decay $D_{s}^{+} \to a_{0} (980)^{0} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +506

Using 6.32 fb $^{- 1}$ of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226~GeV, we present the first search for the…

Evidence for the decays of $I^_{c}^{+} \to I^£^{+} I^\cdot$ and $I^£^{+} I^\cdot^{'}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +458

We study the hadronic decays of $I^_{c}^{+}$ to the final states $I^£^{+} I^\cdot$ and $I^£^{+} I^\cdot^{'}$ , using an $e^{+} e^{-}$ annihilation data sample of 567 pb $^{- 1}$ taken at a center-o…

physics.ins-det2019

A fast and parametric digitization for triple-GEM detectors

R. Farinelli, M. Alexeev, A. Amoroso +48

Triple-GEM detectors are a well known technology in high energy physics. In order to have a complete understanding of their behavior, in parallel with on beam testing, a Monte Carl…

Measurement of the Dynamics of the Decays $D_{s}^{+} \to I^\cdot^{(')} e^{+} I^½_{e}$

M. Ablikim, M. N. Achasov, S. Ahmed +458

Using $e^{+} e^{-}$ annihilation data corresponding to an integrated luminosity of 3.19\,fb $^{- 1}$ collected at a center-of-mass energy of 4.178~GeV with the BESIII detector, we measure…

Determination of the absolute branching fractions of $D^{0} \to K^{-} e^{+} I^½_{e}$ and $D^{+} \to K ˉ^{0} e^{+} I^½_{e}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +502

Using 2.93 fb $^{- 1}$ of $e^{+} e^{-}$ collision data collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we measure the absolute branching fractions of the decay…

Observation of $D^{+} \to f_{0} (500) e^{+} I^½_{e}$ and Improved Measurements of $D \to I ¨ e^{+} I^½_{e}$

M. Ablikim, M. N. Achasov, S. Ahmed +458

Using a data sample corresponding to an integrated luminosity of 2.93~fb $^{- 1}$ recorded by the BESIII detector at a center-of-mass energy of $3.773$ GeV, we present an analysis of…

Measurements of the absolute branching fractions of $D^{0 (+)} \to K K ˉ I ¨ I ¨ $ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +492

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 the measurements of the absolute branching fractions o…

Observation of a resonant structure in $e^{+} e^{-} \to I ¨ I^\cdot$ and another in $e^{+} e^{-} \to I ¨ I ¨ ^{0}$ at center-of-mass energies between 2.00 and 3.08 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +485

Born cross sections for the processes $e^{+} e^{-} \to I ¨ I^\cdot$ and $e^{+} e^{-} \to I ¨ I ¨ ^{0}$ have been determined for center-of-mass energies between 2.00 and 3.08 GeV with the BESIII detecto…

Measurement of proton electromagnetic form factors in $e^{+} e^{-} \to p p ˉ$ in the energy region 2.00-3.08 GeV

M. Ablikim, M. N. Achasov, P. Adlarson +473

The process of $e^{+} e^{-} \to p p ˉ$ is studied at 22 center-of-mass energy points ( $s$ ) from 2.00 to 3.08 GeV, exploiting 688.5~pb $^{- 1}$ of data collected with the…

Study of $e^{+} e^{-} \to I ¨ ^{0} X (3872) I^^{3}$ and search for $Z_{c} (4020)^{0} \to X (3872) I^^{3}$

M. Ablikim, M. N. Achasov, P. Adlarson +505

Using data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.178 to 4.600 GeV, we study the process $e^+e^-\rightarr…

Observation of $e^{+} e^{-} \to D_{s}^{+} D^{(*) 0} K^{-}$ and study of the $P$ -wave $D_{s}$ mesons

BESIII Collaboration, M. Ablikim, M. N. Achasov +453

Studies of $e^{+} e^{-} \to D_{s}^{+} D^{(*) 0} K^{-}$ and the $P$ -wave charmed-strange mesons are performed based on an $e^{+} e^{-}$ collision data sample corresponding to an integrat…

Measurement of the Born cross sections for $e^{+} e^{-} \to I^\cdot^{'} I ¨ ^{+} I ¨ ^{-}$ at center-of-mass energies between $2.00$ and $3.08$ GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +487

The Born cross sections for the process $e^{+} e^{-} \to I^\cdot^{'} I ¨ ^{+} I ¨ ^{-}$ at different center-of-mass energies between $2.00$ and $3.08$ GeV are reported with improved precision…

Measurements of $e^{+} e^{-} \to I^\cdot_{c} I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ , $I^\cdot_{c} I ¨ ^{+} I ¨ ^{-}$ and $I^\cdot_{c} I ¨ ^{0} I^^{3}$ at $s$ from 4.18 to 4.60\,GeV, and search for a $Z_{c}$ state close to the $D D ˉ$ threshold decaying to $I^\cdot_{c} I ¨ $ at $s$ = 4.23 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +492

We study $I^\cdot_{c}$ production at center-of-mass energies $s$ from 4.18 to 4.60 GeV in $e^{+} e^{-}$ annihilation data collected with the BESIII detector operating at the BEPCI…

Measurement of the inclusive branching fraction for $I ¨ (3686) \to K_{S}^{0} + anything$

M. Ablikim, M. N. Achasov, P. Adlarson +483

Using 5.9~pb $^{- 1}$ of $e^{+} e^{-}$ annihilation data collected at center-of-mass energies from 3.640 to 3.701 GeV with the BESIII detector at the BEPCII Collider, we measure the obser…

Observation of $I ¨ (3686) \to I^\cdot^{'} e^{+} e^{-}$

M. Ablikim, M. N. Achasov, S. Ahmed +454

Using a data sample of $448.1 \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector at the BEPCII collider, we report the first observation of the electromagnetic Dalit…

Observation of $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ (3770)$ and $D_{1} (2420)^{0} D ˉ^{0} + c . c .$

BESIII Collaboration, M. Ablikim, M. N. Achasov +475

Several intermediate states of the reaction channels $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} D^{0} D ˉ^{0}$ and $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} D^{+} D^{-}$ are studied usin…

Study of the decay $D^{0} \to K ˉ^{0} I ¨ ^{-} e^{+} I^½_{e}$

M. Ablikim, M. N. Achasov, S. Ahmed +459

We report a study of the decay $D^{0} \to K ˉ^{0} I ¨ ^{-} e^{+} I^½_{e}$ based on a sample of $2.93 fb^{- 1}$ $e^{+} e^{-}$ annihilation data collected at the center-of-mass ener…

Measurement of cross-section for $e^{+} e^{-} \to I^^{-} I^ˉ ^{+}$ near threshold at BESIII

BESIII Collaboration, M. Ablikim, M. N. Achasov +494

The Born cross-sections and effective form factors for process $e^{+} e^{-} \to I^^{-} I^ˉ ^{+}$ are measured at eight center-of-mass energies between 2.644 and 3.080 GeV, using a total inte…

Measurement of Branching Fractions of $I ¨ (3686) \to I ¨ I^\cdot^{'}, I ¨ f_{1} (1285)$ and $I ¨ I^\cdot (1405)$

M. Ablikim, M. N. Achasov, P. Adlarson +476

Using a sample of $448.1 \times 1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector, we perform a study of the decay $I ¨ (3686) \to I ¨ I ¨ ^{+} I ¨ ^{-} I^\cdot$ . The branching fra…

Search for the reaction $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ _{c J}$ and a charmonium-like structure decaying to $I ¨ _{c J} I ¨ ^{\pm}$ between 4.18 and 4.60 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +481

We search for the process $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ _{c J}$ ( $J = 0, 1, 2$ ) and for a charged charmonium-like state in the $I ¨ ^{\pm} I ¨ _{c J}$ subsystem. The search uses data…

Erratum to "Measurement of the $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-}$ cross section between 600 and 900 MeV using initial state radiation"

BESIII Collaboration, M. Ablikim, M. N. Achasov +489

In Phys. Lett. B 753, 629-638 (2016) [arXiv:1507.08188] the BESIII collaboration published a cross section measurement of the process $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-}$ in the energy range betw…

Observation of the Semileptonic $D^{+}$ Transition into an Axial-Vector Meson $K ˉ_{1} (1270)^{0}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +479

By analyzing a 2.93~ $f b^{- 1}$ data sample of $e^{+} e^{-}$ collisions, recorded at a center-of-mass energy of 3.773 $GeV$ with the BESIII detector operated at the BEPCII colli…

Search for the reaction channel $e^{+} e^{-} \to I^\cdot_{c} I^\cdot I ¨ ^{+} I ¨ ^{-}$ at center-of-mass energies from 4.23 to 4.60 GeV

BESIII Collaboration, M. Ablikim, M. N. Achasov +464

Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider, we search for the process $e^{+} e^{-} \to I^\cdot_{c} I^\cdot I ¨ ^{+} I ¨ ^{-}$ . The search is perfo…

Search for the rare decay $I^\cdot^{'} \to I ¨ ^{0} I ¨ ^{0} I ¨ ^{0} I ¨ ^{0}$ at BESIII

M. Ablikim, M. N. Achasov, P. Adlarson +476

Based on a sample of 1.31 billion $J / I ¨ $ events collected with the BESIII detector, we perform a search for the rare decay $I^\cdot^{'} \to 4 I ¨ ^{0}$ via $J / I ¨ \to I^^{3} I^\cdot^{'}$ . No s…

Measurement of e+e- --> D Dbar Cross Sections at the psi(3770) Resonance

BESIII Collaboration, M. Ablikim, M. N. Achasov +452

We report new measurements of the cross sections for the production of D Dbar final states at the psi(3770) resonance. Our data sample consists of an integrated luminosity of 2.93/…

First Measurements of $I ¨ _{c J} \to I^£^{-} I^ˉ £^{+} (J = 0, 1, 2)$ Decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

We measured the branching fractions of the decays $I ¨ _{c J} \to I^£^{-} I^ˉ £^{+}$ for the first time using the final states $n n ˉ I ¨ ^{+} I ¨ ^{-}$ . The data sample exploited here is $…

Search for the decay $I^\cdot^{'} \to I^^{3} I^^{3} I^\cdot$

M. Ablikim, M. N. Achasov, P. Adlarson +479

Using a data sample of $1.31 \times 1 0^{9} J / I ¨ $ events collected with the BESIII detector, a search for $I^\cdot^{'} \to I^^{3} I^^{3} I^\cdot$ via $J / I ¨ \to I^^{3} I^\cdot^{'}$ is performed for the first time. No signif…

Measurement of Singly Cabibbo-Suppressed Decays $D \to I ¨ I ¨ I ¨ $

BESIII Collaboration, M. Ablikim, M. N. Achasov +486

Using 2.93 fb $^{- 1}$ of $e^{+} e^{-}$ collision data taken at a center-of-mass energy of 3.773 GeV by the BESIII detector at the BEPCII, we measure the branching fractions of the si…

Observation of $I ¨ (3686) \to I^ (1530)^{-} I^ˉ (1530)^{+}$ and $I^ (1530)^{-} I^ˉ ^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +475

Using 448.1 $\times$ $1 0^{6}$ $I ¨ (3686)$ events collected with the BESIII detector at BEPCII, we employ a single-baryon tagging technique to make the first observation of $Ï(3686)…

Observation of the $W$ -Annihilation Decay $D_{s}^{+} \to I ¨ I ¨ ^{+}$ and Evidence for $D_{s}^{+} \to I ¨ K^{+}$

M. Ablikim, M. N. Achasov, S. Ahmed +461

We report on the observation of the $W$ -annihilation decay $D_{s}^{+} \to I ¨ I ¨ ^{+}$ and the evidence for $D_{s}^{+} \to I ¨ K^{+}$ with a data sample corresponding to…

Precise Measurements of Branching Fractions for $D_{s}^{+}$ Meson Decays to Two Pseudoscalar Mesons

M. Ablikim, M. N. Achasov, P. Adlarson +483

We measure the branching fractions for seven $D_{s}^{+}$ two-body decays to pseudo-scalar mesons, by analyzing data collected at $s = 4.178 \sim 4.226$ GeV with the BESIII detec…

Determination of the $I^_{c}^{+}$ spin via the reaction $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +484

We report on a comparison of two possible $I^_{c}^{+}$ spin hypotheses, $J = \frac{1}{2}$ and $\frac{3}{2}$ , via the process $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$ , using the angular distributions…

Study of the Decays $D_{s}^{+} \to K_{S}^{0} K^{+}$ and $K_{L}^{0} K^{+}$

M. Ablikim, M. N. Achasov, P. Adlarson +441

Using an $e^{+} e^{-}$ annihilation data sample corresponding to an integrated luminosity of $3.19 fb^{- 1}$ and collected at a center-of-mass energy $\sqrt{s} = 4.178~\math…

Improved measurements of the absolute branching fractions of the inclusive decays $D^{+ (0)} \to I ¨ X$

M. Ablikim, M. N. Achasov, P. Adlarson +479

By analyzing 2.93 fb $^{- 1}$ of $e^{+} e^{-}$ annihilation data taken at the center-of-mass energy $s =$ 3.773 GeV with the BESIII detector, we determine the branching fractions of…

Measurements of Weak Decay Asymmetries of $I^_{c}^{+} \to p K_{S}^{0}$ , $I^ I ¨ ^{+}$ , $I^£^{+} I ¨ ^{0}$ , and $I^£^{0} I ¨ ^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +476

Using $e^{+} e^{-} \to I^_{c}^{+} I^ˉ _{c}^{-}$ production from a 567 pb $^{- 1}$ data sample collected by BESIII at 4.6 GeV, a full angular analysis is carried out simultaneously on the four deca…

Dalitz Plot Analysis of the Decay $I ¨ \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$

M. Ablikim, M. N. Achasov, S. Ahmed +461

Using a low-background sample of $2.6 \times 1 0^{5}$ $J / I ¨ \to I ¨ I^\cdot (I ¨ \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}, I^\cdot \to I^^{3} I^^{3})$ events, about 5 times larger statistics than previous exp…

Measurement of $B (J / I ¨ \to I^\cdot^{'} e^{+} e^{-}$ ) and search for a dark photon

M. Ablikim, M. N. Achasov, S. Ahmed +455

Using a data sample of $(1310.6 \pm 7.0) \times 1 0^{6}$ $J / I ¨ $ decay events collected with the BESIII detector at BEPCII, we study the electromagnetic Dalitz decay $J / I ¨ \to I^\cdot^{'} e^{+} e^{-}$ …

Measurement of the $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ cross section from 0.7 GeV to 3.0 GeV via initial-state radiation

M. Ablikim, M. N. Achasov, P. Adlarson +481

The cross section of the process $e^{+} e^{-} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0}$ is measured with a precision of 1.6% to 25% in the energy range between $0.7$ and 3.0 GeV using the Initial State Radiation…

Cross section measurement of $e^{+} e^{-} \to I^\cdot^{'} J / I ¨ $ from $s = 4.178$ to $4.600$ GeV

M. Ablikim, M. N. Achasov, P. Adlarson +477

The cross section of the process $e^{+} e^{-} \to I^\cdot^{'} J / I ¨ $ is measured at center-of-mass energies from $s =$ 4.178 to 4.600 GeV using data samples corresponding to a tota…

Observation of $I ¨ (3686) \to p p ˉ I ¨ $

M. Ablikim, M. N. Achasov, P. Adlarson +475

Using a data sample of $4.48 \times 1 0^{8}$ $\psip$ events collected with the BESIII detector, we present a first observation of $I ¨ (3686) \to p p ˉ I ¨ $ , and we measure its branchin…

First measurement of the form factors in $D_{s}^{+} \to K^{0} e^{+} I^½_{e}$ and $D_{s}^{+} \to K^{* 0} e^{+} I^½_{e}$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +459

We report on new measurements of Cabibbo-suppressed semileptonic $D_{s}^{+}$ decays using $3.19 fb^{- 1}$ of $e^{+} e^{-}$ annihilation data sample collected at a center-of-mass ene…