Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR
文献类型：期刊论文
| 作者 | Dodokhov, V. Kh.56; Efremov, A. A.56; Fedunov, A. G.56; Festchenko, A. A.56; Galoyan, A. S.56; Grigoryan, S.56; Karmokov, A.56; Koshurnikov, E. K.56; Lobanov, V. I.56; Lobanov, Yu. Yu.56 |
| 刊名 | EUROPEAN PHYSICAL JOURNAL A
 |
| 出版日期 | 2015-08-28 |
| 卷号 | 51页码:19 |
| ISSN号 | 1434-6001 |
| DOI | 10.1140/epja/i2015-15107-y |
| 英文摘要 | Baryon-to-meson Transition Distribution Amplitudes (TDAs) encoding valuable new information on hadron structure appear as building blocks in the collinear factorized description for several types of hard exclusive reactions. In this paper, we address the possibility of accessing nucleon-to-pion (pi N) TDAs from (p) over barp -> e(+)e(-)pi(0) reaction with the future PANDA detector at the FAIR facility. At high center-of-mass energy and high invariant mass squared of the lepton pair q(2), the amplitude of the signal channel (p) over barp -> e(+)e(-)pi(0) admits a QCD factorized description in terms of pi N TDAs and nucleon Distribution Amplitudes (DAs) in the forward aid backward kinematic regimes. Assuming the validity of this factorized description, we perform feasibility studies for measuring (p) over barp -> e(+)e(-)pi(0) with the PANDA detector. Detailed simulations on signal reconstruction efficiency as well as on rejection of the most severe background channel, i.e. (p) over barp -> pi(+)pi(-)pi(0) were performed for the center-of-mass energy squared s = 5 GeV2 and s = 10 GeV2, in the kinematic regions 3.0 < q(2) < 4.3 GeV2 and 5 < q(2) < 9 GeV2, respectively, with a neutral pion scattered in the forward or backward cone vertical bar cos theta(pi 0)vertical bar > 0.5 in the proton-antiproton center-of-mass frame. Results of the simulation show that the particle identification capabilities of the PANDA detector will allow to achieve a background rejection factor of 5 . 10(7) (1 . 10(7)) at low (high) q(2) for s = 5 GeV2, and of 1 . 10(8) (6 . 10(6)) at low (high) q(2) for s = 10 GeV2, while keeping the signal reconstruction efficiency at around 40%. At both energies, a clean lepton signal can be reconstructed with the expected statistics corresponding to 2 of integrated luminosity. The cross sections obtained from the simulations are used to show that a test of QCD collinear factorization can be done at the lowest order by measuring scaling laws and angular distributions. The future measurement of the signal channel cross section with PANDA will provide a new test of the perturbative QCD description of a novel class of hard exclusive reactions and will open the possibility of experimentally accessing pi N TDAs. |
| WOS关键词 | EXCLUSIVE PROCESSES ; MESON PRODUCTION ; CROSS-SECTIONS ; MONTE-CARLO ; ANNIHILATION ; QCD ; ELECTROPRODUCTION ; (P)OVER-BARANDA ; NUCLEON ; PI(0) |
| 资助项目 | Science and Technology Facilities Council (STFC), British funding agency, Great Britain ; Bhablia Atomic Research Center (BARC) ; Indian Institute of Technology, Mumbai, India ; Bundesministerium fur Bildung und Forschung (BMBF), Germany ; Carl-Zeiss-Stiftung, Mainz, Germany[21-0563-2.8/122/1] ; Carl-Zeiss-Stiftung, Mainz, Germany[21-0563-2.8/131/1] ; Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands ; CNRS/IN2P3, France ; Deutsche Forschungsgemeinschaft (DFG), Germany ; Deutscher Akademischer Austauschdienst (DAAD), Germany ; Forschungszentrum Julich GmbH, Julich, Germany ; European Commission[FP7 GA283286] ; Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, Germany ; Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany ; INTAS, European Commission ; Institute of High Energy Physics (IHEP) ; Chinese Academy of Sciences, Beijing, China ; Istituto Nazionale di Fisica, Nucleare (INFN), Italy ; Ministerio de Educacion y Ciencia (MEC)[FPA2006-12120-C03-02] ; Instituto de Fisica Corpuscular (IFIC) ; Universidad de Valencia-CSIC, Paterna, Spain ; National Science Center of Poland (NCN) ; Polish Ministry of Science and Higher Education (MNiSW), Poland ; State Atomic Energy Corporation Rosatom ; National Research Center "Kurchatov Institute", Russia ; Schweizerischer Nationalfonds zur Forderung der wisserischaftlichen Forschung (SNF), Switzerland ; Stefan Meyer Institut fur Subatomare Physik ; Osterreichische Akademie der Wissenschaften, Wien, Austria ; Swedish Research Council, Sweden |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000360439700001 |
| 出版者 | SPRINGER |
| 资助机构 | Science and Technology Facilities Council (STFC), British funding agency, Great Britain ; Bhablia Atomic Research Center (BARC) ; Indian Institute of Technology, Mumbai, India ; Bundesministerium fur Bildung und Forschung (BMBF), Germany ; Carl-Zeiss-Stiftung, Mainz, Germany ; Center for Advanced Radiation Technology (KVI-CART), Groningen, Netherlands ; CNRS/IN2P3, France ; Deutsche Forschungsgemeinschaft (DFG), Germany ; Deutscher Akademischer Austauschdienst (DAAD), Germany ; Forschungszentrum Julich GmbH, Julich, Germany ; European Commission ; Gesellschaft fur Schwerionenforschung GmbH (GSI), Darmstadt, Germany ; Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany ; INTAS, European Commission ; Institute of High Energy Physics (IHEP) ; Chinese Academy of Sciences, Beijing, China ; Istituto Nazionale di Fisica, Nucleare (INFN), Italy ; Ministerio de Educacion y Ciencia (MEC) ; Instituto de Fisica Corpuscular (IFIC) ; Universidad de Valencia-CSIC, Paterna, Spain ; National Science Center of Poland (NCN) ; Polish Ministry of Science and Higher Education (MNiSW), Poland ; State Atomic Energy Corporation Rosatom ; National Research Center "Kurchatov Institute", Russia ; Schweizerischer Nationalfonds zur Forderung der wisserischaftlichen Forschung (SNF), Switzerland ; Stefan Meyer Institut fur Subatomare Physik ; Osterreichische Akademie der Wissenschaften, Wien, Austria ; Swedish Research Council, Sweden |
| 源URL | [http://119.78.100.186/handle/113462/40514]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Singh, B. P. |
| 作者单位 | 1.Moscow Power Engn Inst, Moscow, Russia 2.Univ Liege, IFPA, Dept AGO, Liege, Belgium 3.Austrian Acad Sci, Stefan Meyer Inst Subatomare Phys, Vienna, Austria 4.Natl Ctr Nucl Res, Warsaw, Poland 5.Sardar Patel Univ, Dept Phys, Vallabh Vidynagar, India 6.Univ Valencia, CSIC, Inst Fis Corpuscular IFIC, Valencia, Spain 7.Uppsala Univ, Inst Stralningsvetenskap, Uppsala, Sweden 8.Svedberg Lab, S-75121 Uppsala, Sweden 9.Univ Tubingen, Tubingen, Germany 10.Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy |
| 推荐引用方式 GB/T 7714 | Dodokhov, V. Kh.,Efremov, A. A.,Fedunov, A. G.,et al. Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR[J]. EUROPEAN PHYSICAL JOURNAL A,2015,51:19. |
| APA | Dodokhov, V. Kh..,Efremov, A. A..,Fedunov, A. G..,Festchenko, A. A..,Galoyan, A. S..,...&Liu, H..(2015).Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR.EUROPEAN PHYSICAL JOURNAL A,51,19. |
| MLA | Dodokhov, V. Kh.,et al."Experimental access to Transition Distribution Amplitudes with the PANDA experiment at FAIR".EUROPEAN PHYSICAL JOURNAL A 51(2015):19. |
入库方式： OAI收割
来源：近代物理研究所
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