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Featured researches published by Q. An.


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1991

Hadron calorimetry in the L3 detector

O. Adriani; A. Arefiev; Q. An; T. Azemoon; T. Aziz; R.C. Ball; S. Banerjee; P. Blömeke; M. Capell; X.D. Cai; C. Chen; G. M. Chen; H. S. Chen; M.L. Chen; S.R. Chendvankar; C. Civinini; X.Y. Cui; Raffaello D'Alessandro; Yu. Galaktionov; E. Gallo; S.N. Ganguli; Steven Goldfarb; Z.F. Gong; A. Gordeev; Yu. Gorodkov; A. Gurtu; H. Haan; H. Hofer; M.M. Ilyas; L.W. Jones

Abstract The characteristics of the L3 hadron calorimeter as realized in the observation of hadronic jets and other events from e + e − collisions at LEP are presented and discussed. The pattern-recognition algorithm utilizing the fine granulatiry of the calorimeter is described, and the observed overall resolution of 10.2% for hadron jets from Z decay is reported. The use of the calorimeter in providing information on muon energy losses is also noted.


Physics Letters B | 1993

Measurement of Γbb Γhad from hadronic decays of the Z

O. Adriani; M. Aguilar-Benitez; S. P. Ahlen; J. Alcaraz; A. Aloisio; G. Alverson; M. G. Alviggi; G. Ambrosi; Q. An; H. Anderhub; A.L. Anderson; V. Andreev; L. Antonov; D. Antreasyan; P. Arce; A. Arefiev; A. Atamanchuk; T. Azemoon; T. Aziz; P.V.K.S. Baba; S. Bachmann; P. Bagnaia; J.A. Bakken; L. Baksay; R.C. Ball; S. Banerjee; J. Bao; R. Barillère; Luciano Barone; A. Baschirotto

We report a measurement of R b = Γ bb Γ had from Z → qq events at LEP. View the Z → qq events are identified using a multidimensional analysis based on a neural network approach. We obtain 60% sample purity with an efficiency of 35%. Our measured value of R b is 0.222±0.003±0.007.


Physical Review Letters | 2017

Precise Measurement of the e

M. Ablikim; M. N. Achasov; S. Ahmed; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; O. Bakina; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; N. Berger; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin


Physical Review Letters | 2017

Evidence of Two Resonant Structures in e

M. Ablikim; M. N. Achasov; S. Ahmed; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; O. Bakina; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; N. Berger; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin


Physical Review Letters | 2017

Observation of Λ_{c}

M. Ablikim; M. N. Achasov; S. Ahmed; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; O. Bakina; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; N. Berger; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin


Physical Review Letters | 2017

Determination of the Spin and Parity of the Z_{c}(3900).

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. A. Chelkov; G. Chen


Physical Review Letters | 2017

Amplitude Analysis of the Decays Î

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. A. Chelkov; G. Chen


Physics Letters B | 2016

始状態放射を用いた600と900MeVの間でのe+e-→π+π-断面積の測定

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. A. Chelkov; G. Chen


Physical Review Letters | 2016

Observation of h_{c} Radiative Decay h_{c}âγη

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. A. Chelkov; G. Chen


Physical Review Letters | 2015

Observation of the ψ(1 3D2) State in e+e-âπ+π-γχc1 at BESIII.

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; O. Bondarenko; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. A. Chelkov

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G. F. Cao

Chinese Academy of Sciences

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J. Z. Bai

Chinese Academy of Sciences

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M. Ablikim

Chinese Academy of Sciences

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X. C. Ai

Chinese Academy of Sciences

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E. Boger

Joint Institute for Nuclear Research

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I. Boyko

Joint Institute for Nuclear Research

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M. N. Achasov

Budker Institute of Nuclear Physics

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