A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS

for the; CLAS collaboration

doi:10.1088/1674-1137/33/12/057

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1369-1372 DOI: 10.1088/1674-1137/33/12/057

A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS

Abstract
HTML
Reference
Related

PDF

Abstract：
We present a preliminary analysis of the photon beam asymmetry observable
(Σ) from the photoproduction reaction channel γn→pπ^－ in the invariant mass range 1.6—2.3 GeV. The measurement was obtained using the near-4π CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory, USA, employing a linearly polarised photon beam with an energy range 1.1—2.3 GeV, incident on a liquid deuterium target. The measurement will provide new data to address the poorly established neutron excitation spectrum and will greatly expand the sparse world data-set both in energy and angle.

References

[1]

. Burkert V, Lee T S H. Int. J. of Mod. Phys. E, 2004, 13:10352. Dugger M et al. Phys. Rev. C, 2007, 76: 0252113. Dugger M et al. Phys. Rev. C, accepted May 20094. Bradford R et al. Phys. Rev. C, 2006, 73: 0352025. Bradford R et al. Phys. Rev. C, 2007, 75: 0352056. Barker I, Donnachie A, Storrow J. Nucl. Phys. B,1975, 95:3477. Chiang W-T, Tabakin F. Phys. Rev. C, 1997, 55: 20548. Alspector J et al. Phys. Rev. Lett., 1972, 28: 14039. Abrahamian L et al. Sov. J. Nucl. Phys., 1980, 32: 6910. Adamyan F et al. J. Phys. G, 1989, 15: 179711. Sober D et al. Nucl. Instr. and Meth. A, 2000, 440: 26312. Mecking B et al. Nucl. Instr. and Meth. A, 2003, 503: 513

[1]	Lei Zhao , Lin-Song Zhan , Xing-Shun Gao , Shu-Bin Liu , Qi An . Application of real-time digitization techniques in beam measurement for accelerators. Chinese Physics C, 2016, 40(4): 046102. doi: 10.1088/1674-1137/40/4/046102
[2]	Kai Tang , Bao-Gen Sun , Yong-Liang Yang , Ping Lu , Lei-Lei Tang , Fang-Fang Wu , Chao-Cai Cheng , Jia-Jun Zheng , Hao Li . Transverse beam size measurement system using visible synchrotron radiation at HLS Ⅱ. Chinese Physics C, 2016, 40(9): 097002. doi: 10.1088/1674-1137/40/9/097002
[3]	Long-Xiang Liu , Hong-Wei Wang , Yu-Gang Ma , Xi-Guang Cao , Xiang-Zhou Cai , Jin-Gen Chen , Gui-Lin Zhang , Jian-Long Han , Guo-Qiang Zhang , Ji-Feng Hu , Xiao-He Wang . Neutron time-of-flight spectroscopy measurement using a waveform digitizer. Chinese Physics C, 2016, 40(5): 056202. doi: 10.1088/1674-1137/40/5/056202
[4]	Chao-Cai Cheng , Bao-Gen Sun , Yong-Liang Yang , Ze-Ran Zhou , Ping Lu , Fang-Fang Wu , Ji-Gang Wang , Kai Tang , Qing Luo , Hao Li , Jia-Jun Zheng , Qing-Ming Duan . Beam size and position measurement based on logarithm processing algorithm in HLS Ⅱ. Chinese Physics C, 2016, 40(4): 047004. doi: 10.1088/1674-1137/40/4/047004
[5]	Jian-Yong Zhang , Xiao Cai , Xiao-Hu Mo , Di-Zhou Guo , Jian-Li Wang , Bai-Qi Liu , M. N. Achasov , A. A. Krasnov , N. Yu. Muchnoi , E. E. Pyata , E. V. Mamoshkina , F. A. Harris . Upgrade of beam energy measurement system at BEPC-Ⅱ. Chinese Physics C, 2016, 40(7): 076001. doi: 10.1088/1674-1137/40/7/076001
[6]	ZENG Li-Na , WANG Qiang , SONG Ling-Li , ZHENG Chun . Influence of thermal and resonance neutron on fast neutron flux measurement by ²³⁹Pu fission chamber. Chinese Physics C, 2015, 39(1): 016001. doi: 10.1088/1674-1137/39/1/016001
[7]	ZHOU Liang , QU Hua-Min . Mechanical research and development of a monocrystallinesilicon neutron beam window for CSNS. Chinese Physics C, 2015, 39(9): 096001. doi: 10.1088/1674-1137/39/9/096001
[8]	MO Xiao-Hu . Uncertainty of the beam energy measurement in the e⁺e^- collision using Compton backscattering. Chinese Physics C, 2014, 38(10): 106203. doi: 10.1088/1674-1137/38/10/106203
[9]	ZOU Jun-Ying , WU Fang-Fang , YANG Yong-Liang , SUN Bao-Gen , ZHOU Ze-Ran , LUO Qing , LU Ping , XU Hong-Liang . A new measurement method for electrode gain in an orthogonally symmetric beam position monitor. Chinese Physics C, 2014, 38(12): 127002. doi: 10.1088/1674-1137/38/12/127002
[10]	BAI Jiao-Ni , ZENG Lei , WANG Biao , LI Peng , LI Fang , XU Tao-Guang , LI Zi-Gao . Modified read-out system of the beam phase measurement system for CSNS. Chinese Physics C, 2013, 37(10): 107004. doi: 10.1088/1674-1137/37/10/107004
[11]	WU Dai , YANG Ren-Jun , BAI Wei , LI Peng , LI Ming , YANG Xing-Fan . Design study of an improved laser wire system for electron beam measurement. Chinese Physics C, 2013, 37(10): 108101. doi: 10.1088/1674-1137/37/10/108101
[12]	WANG Wen-Jing , HUANG Sen-Lin , QUAN Sheng-Wen , LIN Lin , LIU Ke-Xin . An emittance measurement device for a space-charge dominated electron beam. Chinese Physics C, 2012, 36(9): 867-870. doi: 10.1088/1674-1137/36/9/013
[13]	ZHOU Jian-Rong , SUN Zhi-Jia , LIU Ben , WANG Yan-Feng , YANG Gui-An , ZHOU Liang , XU Hong , DONG Jing , YANG Lei , LI Yi . Neutron beam monitor based on a boron-coated GEM. Chinese Physics C, 2011, 35(7): 668-674. doi: 10.1088/1674-1137/35/7/012
[14]	SUN Da-Rui , XU Jin-Qiang , CHEN Sen-Yu . Electro-optical sampling non-synchronous delay scanning measurement ofelectron beam bunch length at BFEL. Chinese Physics C, 2010, 34(2): 227-230. doi: 10.1088/1674-1137/34/2/014
[15]	MO Xiao-Hu , CHU Yuan-Ping , DONG Hai-Yi , FU Cheng-Dong , LI Xiao-Nan , LIU Qian , QU Hua-Min , QIN Qing , SHEN Cheng-Ping , WANG Yi-Fang , XU Jin-Qiang , ZHANG Jian-Yong , ZHANG Qing-Jiang , ZHANG Yin-Hong , ZHANG Tian-Bao , ZHAO Zhuo . Beam energy measurement system at BEPCⅡ. Chinese Physics C, 2010, 34(6): 912-917. doi: 10.1088/1674-1137/34/6/050
[16]	LI Yong-Jiang , XU Wang , CAI Xiao-Lu , FAN Gong-Tao , FAN Guang-Wei , LUO Wen , PAN Qiang-Yan , XU Ben-Ji , YANG Li-Feng , YAN Zhe . Measurement of PV asymmetry in n+p→d+γ and γ+d→n+p. Chinese Physics C, 2010, 34(9): 1465-1468. doi: 10.1088/1674-1137/34/9/073
[17]	V. D. Burkert , L. Elouadrhiri , G. V. Fedotov , E. N. Golovach , B. S. Ishkhanov . Recent results on nucleon resonance electrocouplings from the studies of π⁺π^－p electroproduction with the CLAS detector. Chinese Physics C, 2009, 33(12): 1210-1215. doi: 10.1088/1674-1137/33/12/025
[18]	LIU Gui-Hua , MA Yu-Gang , CAI Xiang-Zhou , FANG De-Qing , SHEN Wen-Qing , TIAN Wen-Dong , WANG Kun . Impact parameter and beam energy dependence for azimuthal asymmetry of direct photons and free protons in intermediate energy heavy-ion collisions. Chinese Physics C, 2009, 33(S1): 89-91. doi: 10.1088/1674-1137/33/S1/029
[19]	E. Pasyuk (for the CLAS collaboration) . CLAS+FROST: new generation of photoproduction experiments at Jefferson Lab.. Chinese Physics C, 2009, 33(12): 1205-1209. doi: 10.1088/1674-1137/33/12/024
[20]	D. Werthmüller (for the Crystal Ball/TAPS collaborations) . Investigation of the anomaly in η-photoproduction off the neutron. Chinese Physics C, 2009, 33(12): 1345-1348. doi: 10.1088/1674-1137/33/12/051

Access

Get Citation

for the and CLAS collaboration. A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS[J]. Chinese Physics C, 2009, 33(12): 1369-1372. doi: 10.1088/1674-1137/33/12/057

for the and CLAS collaboration. A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS[J]. Chinese Physics C, 2009, 33(12): 1369-1372. doi: 10.1088/1674-1137/33/12/057 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(2696)
PDF Downloads(568)
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

A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS

Received Date: 2009-08-07

Accepted Date: 1900-01-01

Available Online: 2009-12-05

Abstract:

We present a preliminary analysis of the photon beam asymmetry observable
(Σ) from the photoproduction reaction channel γn→pπ^－ in the invariant mass range 1.6—2.3 GeV. The measurement was obtained using the near-4π CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Laboratory, USA, employing a linearly polarised photon beam with an energy range 1.1—2.3 GeV, incident on a liquid deuterium target. The measurement will provide new data to address the poorly established neutron excitation spectrum and will greatly expand the sparse world data-set both in energy and angle.

HTML

Reference (1)

A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

A new beam asymmetry measurement from pion photoproduction on the neutron using CLAS

HTML

目录