Single photo and electroproduction of pions at

B. Juliá Díaz

doi:10.1088/1674-1137/33/12/041

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1296-1301 DOI: 10.1088/1674-1137/33/12/041

Single photo and electroproduction of pions at

B. Juliá Díaz ^,

(Department d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Universitat de Barcelona, E—08028 Barcelona, Spain)(Excited Baryon Analysis Center (EBAC), Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA)

Abstract
HTML
Reference
Related

PDF

Abstract：
Within the Excited Baryon Analysis Center we have performed a dynamical coupled-channels analysis of the available p(e,e' π)N data in the region of W≤ 1.6 GeV and Q²≤1.45 (GeV/c)². The channels included are γ^*N, πN, ηN, and ππN which has πΔ, ρN, and σN components. With the hadronic parameters of the model determined in our previous investigations of πN→πN reaction, we have found that the available data in the considered W≤1.6 GeV region can be fitted well by only adjusting the bare γ^*N→N^* helicity amplitudes for the lowest N^* states in P₃₃, P₁₁, S₁₁ and D₁₃ partial waves. The meson cloud effect, as required by the unitarity conditions, on the γ^*N→N^* form factors are examined.

[1]	Hao-Jie Xu , Jie Zhao , Xiao-Bao Wang , Han-Lin Li , Zi-Wei Lin , Cai-Wan Shen , Fu-Qiang Wang . Varying the chiral magnetic effect relative to flow in a single nucleus-nucleus collision. Chinese Physics C, 2018, 42(8): 084103. doi: 10.1088/1674-1137/42/8/084103
[2]	Xiang-Ru Yu , Jing Hu , Xiao-Xue Li , Si-Yu An , Yu Zhang . Effects of single particle on shape phase transitions and phase coexistence in odd-even nuclei. Chinese Physics C, 2018, 42(3): 034103. doi: 10.1088/1674-1137/42/3/034103
[3]	Rafel Escribano , Sergi González-Solís . A data-driven approach to π⁰, η and η' single and double Dalitz decays. Chinese Physics C, 2018, 42(2): 023109. doi: 10.1088/1674-1137/42/2/023109
[4]	HONG Dao-Jin , YU Bo-Xiang , LIU Hong-Bang , HE Xiao-Rong , AN Guang-Peng , CHEN Hai-Tao , CHEN Shi , HU Tao , LI Jia-Cai , LIU Qian , NIU Shun-Li , RUAN Xiang-Dong , XIE Yi-Gang , ZHANG Xuan , ZHENG Yang-Heng . p/π⁺ response of single layer THGEM detector in Ar+3% iC₄H₁₀. Chinese Physics C, 2015, 39(9): 096002. doi: 10.1088/1674-1137/39/9/096002
[5]	JIAO Yi , XIAO Ou-Zheng . Beam dynamics studies of the photo-injector in low-charge operation mode for the ERL test facility at IHEP. Chinese Physics C, 2014, 38(6): 067003. doi: 10.1088/1674-1137/38/6/067003
[6]	XIAO Hong , CHEN Guo-Ming , TAO Jun-Quan , BIAN Jian-Guo , FAN Jia-Wei , LIANG Song , MENG Xiang-Wei , SHEN Yu-Qiao , TANG Zhi-Cheng , WANG Jian , WANG Xian-You , WANG Zheng , XU Ming , XU Wei-Wei , YANG Min , YAN Qi . Discrimination of converted photons and neutral pions at high energies. Chinese Physics C, 2012, 36(10): 979-984. doi: 10.1088/1674-1137/36/10/011
[7]	SUN Shuai-Shuai , XU Guang-Lei , LEI Ge , HUANG Yan , GAO Zhen-Hua , ZHANG Zhi-Yin , TAO Ye . Fluorescence lifetime measurement from a designated single-bunch in the BEPCⅡ colliding mode. Chinese Physics C, 2011, 35(10): 969-973. doi: 10.1088/1674-1137/35/10/016
[8]	WANG Dou , GAO Jie . Single-bunch emittance dilution in the perfect ILC main linac. Chinese Physics C, 2011, 35(3): 296-300. doi: 10.1088/1674-1137/35/3/016
[9]	LIU Sheng-Guang , HUANG Tong-Ming , XU Jin-Qiang . BXERL photo-injector based on a 217 MHz normal conducting RF gun. Chinese Physics C, 2011, 35(9): 865-869. doi: 10.1088/1674-1137/35/9/015
[10]	DONG Yu-Bing , WANG Yi-Zhan . A study of transverse charge density of pions in relativistic quantum mechanics. Chinese Physics C, 2011, 35(8): 713-716. doi: 10.1088/1674-1137/35/8/003
[11]	ZHANG Zi-Zhen . Relativistic description of single-particle resonances via phase shift analysis. Chinese Physics C, 2009, 33(3): 187-190. doi: 10.1088/1674-1137/33/3/005
[12]	Kyungseon Joo (for the CLAS collaboration) . Single π⁰ electro-production in the resonance region with CLAS. Chinese Physics C, 2009, 33(12): 1254-1256. doi: 10.1088/1674-1137/33/12/033
[13]	LIU Guo-Li , ZHANG Huan-Jun . Single top production associated with a neutral scalar at LHC in topcolor-assisted technicolor. Chinese Physics C, 2008, 32(9): 697-699. doi: 10.1088/1674-1137/32/9/004
[14]	ZUO Wei . Single particle properties in asymmetric nuclear matter and TBF rearrangement effect. Chinese Physics C, 2008, 32(S2): 64-69.
[15]	CHEN Kai , CUI Ming-Qi , ZHENG Lei . Transmission measurement of photo-absorption cross section of aluminum in soft X-ray region of 50 to 250eV. Chinese Physics C, 2008, 32(8): 673-676. doi: 10.1088/1674-1137/32/8/018
[16]	ZONG Hong-Jie , YUE Chong-Xing . Top-Pions and Single top Production at the HERA and THERA Colliders. Chinese Physics C, 2004, 28(6): 576-579.
[17]	Zu Donglin . Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavities. Chinese Physics C, 1997, 21(S1): 491-503.
[18]	Han Jiaxiang , Xu Zizong , Chen Hongfang , Li Cheng , Zeng Hui . Single Photon Time Spectra in Gas Avalanches. Chinese Physics C, 1996, 20(S4): 319-323.
[19]	Dou Zhiguo , Jing Xiaogong , Zhao Guoquan . Single-Particle and Single Hole Energies in the ⁴⁰Ca Region. Chinese Physics C, 1991, 15(S1): 85-92.
[20]	Chen Kezhong , Jiang Huanqing . Multinucleon Effect in the Pion Single Charge Exchange Reaction. Chinese Physics C, 1988, 12(S1): 37-44.

Access

Get Citation

B. Juliá Díaz. Single photo and electroproduction of pions at[J]. Chinese Physics C, 2009, 33(12): 1296-1301. doi: 10.1088/1674-1137/33/12/041

B. Juliá Díaz. Single photo and electroproduction of pions at[J]. Chinese Physics C, 2009, 33(12): 1296-1301. doi: 10.1088/1674-1137/33/12/041 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-08-07
Revised: 1900-01-01

Article Metric

Article Views(2778)
PDF Downloads(591)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Single photo and electroproduction of pions at

B. Juliá Díaz ^,

Corresponding author: B. Juliá Díaz,

(Department d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Universitat de Barcelona, E—08028 Barcelona, Spain)(Excited Baryon Analysis Center (EBAC), Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA)

Received Date: 2009-08-07
Accepted Date: 1900-01-01
Available Online: 2009-12-05

Abstract:

Within the Excited Baryon Analysis Center we have performed a dynamical coupled-channels analysis of the available p(e,e' π)N data in the region of W≤ 1.6 GeV and Q²≤1.45 (GeV/c)². The channels included are γ^*N, πN, ηN, and ππN which has πΔ, ρN, and σN components. With the hadronic parameters of the model determined in our previous investigations of πN→πN reaction, we have found that the available data in the considered W≤1.6 GeV region can be fitted well by only adjusting the bare γ^*N→N^* helicity amplitudes for the lowest N^* states in P₃₃, P₁₁, S₁₁ and D₁₃ partial waves. The meson cloud effect, as required by the unitarity conditions, on the γ^*N→N^* form factors are examined.