SCOAP3 Repository 52 records found  1 - 10nextendSearch took 0.02 seconds. 
1. Observation of ψ(3686)nn¯ and improved measurement of ψ(3686)pp¯ / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
We observe the decay ψ(3686)nn¯ for the first time and measure ψ(3686)pp¯ with improved accuracy by using 1.07×108 ψ(3686) events collected with the BESIII detector. [...]
Published in Physical Review D 98 (2018) 10.1103/PhysRevD.98.032006 arXiv:1803.02039
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2. Measurement of the Absolute Branching Fraction of the Inclusive Decay Λc+Λ+X / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
Based on an e+e collision data sample corresponding to an integrated luminosity of 567 pb1 taken at the center-of-mass energy of s=4.6 GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive decay Λc+Λ+X to be B(Λc+Λ+X)=(38.22.2+2.8±0.9)% using the double-tag method, where X refers to any possible final state particles. [...]
Published in Physical Review Letters 121 (2018) 10.1103/PhysRevLett.121.062003 arXiv:1803.05706
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3. Search for invisible decays of ω and ϕ with J/ψ data at BESIII / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
Using a data sample of (1310.6±7.0)×106 J/ψ events collected with the BESIII detector operating at the BEPCII collider, we perform the first experimental search for invisible decays of a light vector meson (V=ω, ϕ) via J/ψVη decays. [...]
Published in Physical Review D 98 (2018) 10.1103/PhysRevD.98.032001 arXiv:1805.05613
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4. Measurement of e+ e− → DD̄ cross sections at the ψ(3770) resonanceSupported by National Key Basic Research Program of China (2015CB856700), National Natural Science Foundation of China (NSFC) (11235011, 11335008, 11425524, 11625523, 11635010), the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program, the CAS Center for Excellence in Particle Physics (CCEPP), Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (U1332201, U1532257, U1532258), CAS Key Research Program of Frontier Sciences (QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040), 100 Talents Program of CAS, National 1000 Talents Program of China, INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology, German Research Foundation DFG under Contracts Nos. Collaborative Research Center CRC 1044, FOR 2359, Istituto Nazionale di Fisica Nucleare, Italy, Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) (530-4CDP03), Ministry of Development of Turkey (DPT2006K-120470), National Science and Technology fund, The Swedish Research Council, U. S. Department of Energy (DEFG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069), University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, WCU Program of National Research Foundation of Korea (R32-2008-000-10155-0) / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
We report new measurements of the cross sections for the production of DD̄ final states at the ψ(3770) resonance. [...]
Published in Chinese Phys. C 42 (2018) 083001 10.1088/1674-1137/42/8/083001 arXiv:1803.06293
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5. Observation of a00(980)f0(980) Mixing / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
We report the first observation of a00(980)f0(980) mixing in the decays of J/ψϕf0(980)ϕa00(980)ϕηπ0 and χc1a00(980)π0f0(980)π0π+ππ0, using data samples of 1.31×109 J/ψ events and 4.48×108 ψ(3686) events accumulated with the BESIII detector. [...]
Published in Physical Review Letters 121 (2018) 10.1103/PhysRevLett.121.022001 arXiv:1802.00583
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6. Measurements of absolute branching fractions for Λc+→Ξ0K+ and Ξ(1530) 0 K + / Ablikim, M. ; Achasov, M.N. ; Ahmed, S. ; Albrecht, M. ; et al
We report the first measurements of absolute branching fractions for the W -exchange-only processes Λc+→Ξ0K+ and Λc+→Ξ(1530)0K+ with the double-tag technique, by analyzing an e+e− collision data sample, that corresponds to an integrated luminosity of 567 pb −1 collected at a center-of-mass energy of 4.6 GeV by the BESIII detector. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.06.046
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7. Precision Study of ηγπ+π Decay Dynamics / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Ai, X. C. ; et al
Using a low background data sample of 9.7×105 J/ψγη, ηγπ+π events, which are 2 orders of magnitude larger than those from the previous experiments, recorded with the BESIII detector at BEPCII, the decay dynamics of ηγπ+π are studied with both model-dependent and model-independent approaches. [...]
Published in Physical Review Letters 120 (2018) 10.1103/PhysRevLett.120.242003 arXiv:1712.01525
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8. Measurement of the integrated Luminosities of cross-section scan data samples around the (3770) mass regionSupported by National Key Basic Research Program of China (2015CB856700), National Natural Science Foundation of China (NSFC) (11235011, 11335008, 11425524, 11625523, 11635010), the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program, the CAS Center for Excellence in Particle Physics (CCEPP), Joint Large-Scale Scientific Facility Funds of the NSFC and CAS (U1332201, U1532257, U1532258), CAS Key Research Program of Frontier Sciences (QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040), 100 Talents Program of CAS, National 1000 Talents Program of China, INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology, German Research Foundation DFG under Contracts Nos. Collaborative Research Center CRC 1044, FOR 2359, Istituto Nazionale di Fisica Nucleare, Italy, Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) (530-4CDP03), Ministry of Development of Turkey (DPT2006K-120470), National Science and Technology fund, The Swedish Research Council, U. S. Department of Energy (DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069), University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, WCU Program of National Research Foundation of Korea (R32-2008-000-10155-0) / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
To investigate the nature of the (3770) resonance and to measure the cross section for , a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with the BESIII detector operated at the BEPCII collider in the year 2010. [...]
Published in Chinese Phys. C 42 (2018) 063001 10.1088/1674-1137/42/6/063001 arXiv:1803.03802
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9. Observation of ψ (3686)→ η ′ e + e − / Ablikim, M. ; Achasov, M.N. ; Ahmed, S. ; Albrecht, M. ; et al
Using a data sample of 448.1×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider, we report the first observation of the electromagnetic Dalitz decay ψ(3686)→η′e+e− , with significances of 7.0 σ and 6.3 σ when reconstructing the η′ meson via its decay modes η′→γπ+π− and η′→π+π−η ( η→γγ ), respectively. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.05.038
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10. Search for the rare decay of ψ(3686)Λc+p¯e+e+c.c. at BESIII / Ablikim, M. ; Achasov, M. N. ; Ahmed, S. ; Albrecht, M. ; et al
Based on a data sample of (448.1±2.9)×106ψ(3686) decays collected with the BESIII experiment, a search for the flavor changing neutral current transition ψ(3686)Λc+p¯e+e+c.c. is performed for the first time. [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.091102 arXiv:1802.04057
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18 Achasov, M.N.
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