Observation of e + e − → π + π − ψ ( 3770 ) and D 1 ( 2420 ) 0 D ¯ 0 + c . c .

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doi:10.1103/PhysRevD.100.032005

Title: Observation of $e^{+} e^{-} \to π^{+} π^{-} ψ (3770)$ and $D_{1} (2420)^{0} {\bar{D}}^{0} + c . c .$

Journal Article · Tue Aug 13 00:00:00 EDT 2019 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.100.032005· OSTI ID:1557348

Ablikim, M.; Achasov, M. N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Balossino Balossino, I.; Ban, Y.; Begzsuren, K.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bianchi, F. more »

Several intermediate states of the reaction channels e⁺e^– → π⁺π^– D⁰¯D⁰ and e⁺e^– → π⁺π^–D⁺D^– are studied using the data samples collected with the BESIII detector at center-of-mass energies above 4.08 GeV. For the first time in this final state, a ψ(3770) signal is seen in the D¯D invariant mass spectrum, with a statistical significance of 5.2σ at √s = 4.42 GeV. There is also evidence for this resonance at √s = 4.26 and 4.36 GeV with statistical significance of 3.2σ and 3.3σ, respectively. In addition, the Born cross section of e⁺e^– → π⁺π^– ψ(3770) is measured.

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Research Organization:: Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Contributing Organization:: BESIII Collaboration

Grant/Contract Number:: FG02-05ER41374; SC0010118; SC0012069

OSTI ID:: 1557348

Alternate ID(s):: OSTI ID: 1609665

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Vol. 100 Journal Issue: 3; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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Geant4—a simulation toolkit Agostinelli, S.; Allison, J.; Amako, K. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8	journal	July 2003
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The hidden-charm pentaquark and tetraquark states Chen, Hua-Xing; Chen, Wei; Liu, Xiang Physics Reports, Vol. 639 https://doi.org/10.1016/j.physrep.2016.05.004	journal	June 2016
Decay widths of the spin-2 partners of the X(3872) Albaladejo, Miguel; Guo, Feng-Kun; Hidalgo-Duque, Carlos The European Physical Journal C, Vol. 75, Issue 11 https://doi.org/10.1140/epjc/s10052-015-3753-6	journal	November 2015
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Observation and Properties of the $X (3872)$ Decaying to $J / ψ π^{+} π^{-}$ in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 T e V$ Abazov, V. M.; Abbott, B.; Abolins, M. Physical Review Letters, Vol. 93, Issue 16 https://doi.org/10.1103/PhysRevLett.93.162002	journal	October 2004
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Measurements of the center-of-mass energies at BESIII via the di-muon process Ablikim, M.; Achasov, M. N.; Ai, X. C. Chinese Physics C, Vol. 40, Issue 6 https://doi.org/10.1088/1674-1137/40/6/063001	journal	June 2016
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