Search Results - "Xiu, Q. L."
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1
Evidence of Two Resonant Structures in e+e- → π+π-hc
Published in Physical review letters (01-03-2017)“…The cross sections of e+e-→π+π-hc at center-of-mass energies from 3.896 to 4.600 GeV are measured using data samples collected with the BESIII detector…”
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2
Measurement of Proton Electromagnetic Form Factors in e + e − → p p ¯ in the Energy Region 2.00–3.08 GeV
Published in Physical review letters (28-01-2020)Get full text
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3
Measurements of Absolute Hadronic Branching Fractions of the Λ c + Baryon
Published in Physical review letters (05-02-2016)Get full text
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4
Precision Measurement of the e + e − → Λ c + Λ ¯ c − Cross Section Near Threshold
Published in Physical review letters (29-03-2018)“…The cross section of the e+e−→Λc+Λ¯c− process is measured with unprecedented precision using data collected with the BESIII detector at /¯s=4574.5, 4580.0,…”
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5
Determination of the Spin and Parity of the Zc ( 3900 )
Published in Physical review letters (16-08-2017)“…In this paper, the spin and parity of the Zc(3900)± state are determined to be JP = 1+ with a statistical significance larger than 7σ over other quantum…”
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6
Observation of the Decay X(3872)→π0χc1(1P)
Published in Physical review letters (23-05-2019)“…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…”
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7
Study of dynamics of D0 → K–e+νe and D0 → π–e+νe decays
Published in Physical review. D, Particles, fields, gravitation, and cosmology (22-10-2015)“…Here, 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…”
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8
Measurement of the Absolute Branching Fraction for Λ c + → Λ e + ν e
Published in Physical review letters (25-11-2015)Get full text
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9
Dark photon search in the mass range between 1.5 and 3.4 GeV/c
Published in Physics letters. B (10-11-2017)“…Using a data set of 2.93 fb taken at a center-of-mass energy root s = 3.773 GeV with the BESIII detector at the BEPCII collider, we perform a search for an…”
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10
Amplitude Analysis of Ds+→π+π0η and First Observation of the W-Annihilation Dominant Decays Ds+→a0(980)+π0 and Ds+→a0(980)0π
Published in Physical review letters (12-09-2019)“…We present the first amplitude analysis of the decay Ds+→π+π0η. We use an e+e− collision data sample corresponding to an integrated luminosity of 3.19 fb−1…”
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11
Measurement of the Absolute Branching Fraction of the Inclusive Decay Λ c + → Λ + X
Published in Physical review letters (07-08-2018)“…Based on an e+e− collision data sample corresponding to an integrated luminosity of 567 pb−1 taken at the center-of-mass energy of s=4.6 GeV with the BESIII…”
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12
Observation of Z_{c}(3900)^{0} in e^{+}e^{-}→π^{0}π^{0}J/ψ
Published in Physical review letters (11-09-2015)“…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…”
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13
Measurement of the Absolute Branching Fraction of the Inclusive Semileptonic Λ c + Decay
Published in Physical review letters (18-12-2018)“…Using a data sample of ${e}^{+}{e}^{{-}}$ collisions corresponding to an integrated luminosity of $567\text{ }\text{ }{\mathrm{pb}}^{{-}1}$ collected at a…”
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14
Observation of the Semileptonic D + Decay into the K ¯ 1 ( 1270 ) 0 Axial-Vector Meson
Published in Physical review letters (02-12-2019)Get full text
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15
Observation of a00 ( 980 ) −f0 ( 980 ) Mixing
Published in Physical review letters (11-07-2018)“…We report the first observation of a$0\atop{0}$(980)-f0(980) mixing in the decays of J/$\psi$ → Φf0(980) → Φa$0\atop{0}$(980) → Φηπ0 and χc1 →…”
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16
Measurement of Singly Cabibbo Suppressed Decays Λ c+ → pπ+π- and Λ c+ → pK+K-
Published in Physical review letters (02-12-2016)“…Not provided…”
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17
Amplitude Analysis of the Decays η' → π+π-π0 and η' → π0π0π0
Published in Physical review letters (05-01-2017)“…Based on a sample of 1.31 × 109J / ψ events collected with the BESIII detector, an amplitude analysis of the isospin-violating decays η'→ π + π - π 0 and η' →…”
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18
Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}
Published in Physical review letters (27-11-2015)“…We report the first measurement of the absolute branching fraction for Λ_{c}^{+}→Λe^{+}ν_{e}. This measurement is based on 567 pb^{-1} of e^{+}e^{-}…”
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19
Determination of Strong-Phase Parameters in D → KS,L0π+π-
Published in Physical review letters (19-06-2020)“…Not provided…”
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20
Development of MAPS-based detector ladders for the BESIII inner tracker upgrade
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-04-2019)“…A three layers MAPS (monolithic active pixel sensor) detector prototype, 1/10 coverage of the BESIII (Beijing spectrometer III) inner tracker, is selected as…”
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