ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin

M. Bashkanov (for the WASA-at-COSY collaboration)

doi:10.1088/1674-1137/34/9/037

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1339-1341 DOI: 10.1088/1674-1137/34/9/037

ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin

M. Bashkanov (for the WASA-at-COSY collaboration)

Physikalisches Institut, Univ. Tubingen, D-72076 Tubingen, Germany

Abstract
HTML
Reference
Related

PDF

Abstract：
A short overview over the ABC phenomenon is given, which is known since 50 years without any satisfactory explanation. On the basis of new exclusive and kinematically complete data obtained with the WASA detector at COSY we show that this phenomenon is linked with a resonant energy dependence in the total cross section of isoscalar double-pionic fusion processes. This resonance structure is connected with the baryon-baryon system, in particular with the pn and ΔΔ systems, however, has a mass, which is 90 MeV below the nominal ΔΔ threshold and a width of only 70 MeV, i.e., five times smaller than expected from a conventional t-channel ΔΔ scenario.

References

[1]

. Büscher M. contribution to these proceedings2. Abashian A, Booth N E, Crowe K M. Phys. Rev. Lett.,1960, 5: 258; Phys. Rev. Lett., 1961, 7: 35; Phys. Rev.C,1963, 132: 2296 3. Homer R J et al. Phys. Rev. Lett., 1964, 9: 724. Hall J H et al. Nucl. Phys. B, 1969, 12: 5735. Bar-Nir I et al. Nucl. Phys. B, 1973, 54: 176. Banaigs J et al. Nucl. Phys. B, 1973, 67: 17. Banaigs J et al. Nucl. Phys. B, 1976, 105: 528. Plouin F et al. Nucl. Phys. A, 1978, 302: 4139. Abdivaliev A et al. Sov. J. Nucl. Phys., 1979, 29: 79610. Plouin F, Fleury P, Wilkin C. Phys. Rev. Lett., 1990, 65:69011. Wurzinger R et al. Phys. Lett. B, 1999, 445: 42312. for a review see Codino A, Plouin F. LNS/Ph/94-0613. Dymov S et al. Phys. Rev. Lett., 2009, 102: 19230114. Risser T, Shuster M D. Phys. Lett. B, 1973, 43: 6815. Bar-Nir I, Risser T, Shuster M D. Nucl. Phys. B, 1975, 87:10916. Anjos J C, Levy D, Santoro A. Nucl. Phys. B, 1973, 67: 3717. see, e.g., Gardestig A, Faldt G, Wilkin C. Phys. Rev. C,1999, 59: 2608; Phys. Lett. B, 1998, 421: 4118. Mosbacher C A, Osterfeld F. nucl-th/990306419. Alvarez-Ruso L. Phys. Lett. B, 1999,452: 207; PhD thesis,Univ. Valencia 199920. Brodowski W et al. Phys. Rev. Lett., 2002, 88: 19230121. Ptzold J et al. Phys. Rev. C, 2003, 67: 052202(R)22. Skorodko T et al. Eur. Phys. J. A, 2008, 35: 31723. Bargholtz Chr et al. Nucl. Instr. Meth. A, 2008, 594: 33924. Abd El-Bary S et al. Eur. Phys. J. A, 2008, 37: 26725. Sarantsev A V et al. Phys. Lett. B, 2008, 659: 94; arXiv:0707.3591 [hep-ph]26. Skorodko T et al. Phys. Lett. B, 2009, 679: 30; arXiv:0906.3087 [nucl-ex]27. Abd El-Samad S et al. Eur. Phys. J. A, 2009, 42: 15928. Skorodko T. PhD thesis, Univ. Tubingen, 200929. Kren F. PhD thesis, Univ. Tubingen, 201030. Clement H et al. Prog. Part. Nucl. Phys., 2008, 61: 27631. Bashkanov M et al. Phys. Rev. Lett., 2009, 102: 052301;arXiv: 0806.4942 [nucl-ex]32. Bashkanov Met al. Phys. Lett. B, 2006, 637: 22333. Keleta S et al. Nucl. Phys. A, 2009, 825: 8134. Kren F et al. Proc. MESON08, Int. J. Mod. Phys. A, 2009,24: 56135. Kren F et al. Phys. Lett. B, 2010, 684: 11036. Bashkanov M et al. Proc. PANIC08. Eds. Tserruya I,Gal A, Ashery D. Amsterdam, Elsevier, 2009. 239; arXiv:0906.2328 [nucl-ex]37. PING J et al. Phys. Rev. C, 2002, 65: 044003; 2009, 79:02400138. Barnes T et al. Phys. Rev. C, 1993, 48: 53939. Kamae T, Fujita T. Phys. Rev. Lett., 1977, 38: 47140. Oka M, Yazaki K. Prog. Theor. Phys., 1981, 66: 57241. Kukulin V I et al. Nucl. Phys. A, 2001, 689: 327c42. Mota R D et al. Phys. Rev. C,2002, 65: 03400643. Pricking A for the WASA-at-COSY collaboration, Proc.Fewbody 09 fb19, EPJ Web of conferences, to be published

[1]	Si-Jie Dai , Fu-Rong Xu , Jian-Guo Li , Bai-Shan Hu , Zhong-Hao Sun . Continuum effect in resonance spectra of neutron-rich oxygen isotopes. Chinese Physics C, 2018, 42(11): 114106. doi: 10.1088/1674-1137/42/11/114106
[2]	Peng Yin , Jianmin Dong , Wei Zuo . Effect of tensor correlations on the depletion of nuclear Fermi sea within the extended BHF approach. Chinese Physics C, 2017, 41(11): 114102. doi: 10.1088/1674-1137/41/11/114102
[3]	Pei-Wei Wen , Zhao-Qing Feng , Fan Zhang , Cheng Li , Cheng-Jian Lin , Feng-Shou Zhang . Effect of positive Q-value neutron transfers on sub-barrier fusion reactions. Chinese Physics C, 2017, 41(6): 064102. doi: 10.1088/1674-1137/41/6/064102
[4]	A. Gómez Camacho , J. Lubian , H. Q. Zhang , Shan-Gui Zhou . CDCC calculations of fusion of ⁶Li with targets ¹⁴⁴Sm and ¹⁵⁴Sm:effect of resonance states. Chinese Physics C, 2017, 41(12): 124103. doi: 10.1088/1674-1137/41/12/124103
[5]	Jian Tian , Wei Ye . Effect of pre-equilibrium emission on probing postsaddle nuclear dissipation with neutrons. Chinese Physics C, 2016, 40(9): 094103. doi: 10.1088/1674-1137/40/9/094103
[6]	Nan-Ru Ma , Hui-Ming Jia , Cheng-Jian Lin , Lei Yang , Xin-Xing Xu , Li-Jie Sun , Feng Yang , Zhen-Dong Wu , Huan-Qiao Zhang , Zu-Hua Liu , Dong-Xi Wang . Self-consistent analysis of sub-barrier fusion enhancement effect in Ca+Ca and Ni+Ni. Chinese Physics C, 2016, 40(11): 114001. doi: 10.1088/1674-1137/40/11/114001
[7]	ZHANG Ao , GUO Wen-Jun , HUANG Jiang-Wei , YANG Lin-Meng . Isospin effect of the in-medium nucleon-nucleon cross section in excited nuclear reactions. Chinese Physics C, 2014, 38(5): 054103. doi: 10.1088/1674-1137/38/5/054103
[8]	FAN Guang-Wei , CAI Xiao-Lu , HAN Ti-Fei , LI Xue-Chao , REN Zhong-Zhou , XU Wang . Effect of nuclear deformation on direct capture reactions. Chinese Physics C, 2014, 38(4): 044101. doi: 10.1088/1674-1137/38/4/044101
[9]	SUN Qian , SHANGGUAN Dan-Hua , BAO Jing-Dong . A dumbbell model with five parameters describing nuclear fusion or fission. Chinese Physics C, 2013, 37(1): 014102. doi: 10.1088/1674-1137/37/1/014102
[10]	WANG Hong-Min , HOU Zhao-Yu , LIU Jia-Fu , SUN Xian-Jing . J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production. Chinese Physics C, 2010, 34(1): 22-27. doi: 10.1088/1674-1137/34/1/004
[11]	SHAO Li-Jing , ZHANG Yun-Hua , MA Bo-Qiang . Parton distribution functions and nuclear EMC effect in a statistical model. Chinese Physics C, 2010, 34(9): 1417-1420. doi: 10.1088/1674-1137/34/9/059
[12]	MA Guo-Liang . Search for the origin of double-peak structure at RHIC by AMPT model with triggered di-jet. Chinese Physics C, 2010, 34(9): 1456-1458. doi: 10.1088/1674-1137/34/9/070
[13]	CAO Xu . N^*(1535) contribution in pp→ppη´ and pn→dφ. Chinese Physics C, 2009, 33(12): 1381-1384. doi: 10.1088/1674-1137/33/12/060
[14]	ZUO Wei . Single particle properties in asymmetric nuclear matter and TBF rearrangement effect. Chinese Physics C, 2008, 32(S2): 64-69.
[15]	JIANG Song-Sheng , HE Ming , YUE Wei-Hong , QI Bu-Jia , Jing Liu . Excess ³H in the volcanic lakes: evidence for natural nuclear fusion. Chinese Physics C, 2008, 32(S2): 289-293.
[16]	ZHANG Gao-Long , LE Xiao-Yun . Double folding model calculation applied to fusion reactions. Chinese Physics C, 2008, 32(10): 812-815. doi: 10.1088/1674-1137/32/10/009
[17]	Wang Hui , Zheng Yuming , Sa Benhao , Zhang Xiaoze . Incomplete-Fusion-Fragmentation Model and Nuclear Liquid-Gas Phase Transition. Chinese Physics C, 1997, 21(S2): 39-46.
[18]	Gao Chengqun , Yang Baosheng , Zhou Quanhua . ²⁰Ne+¹²C System and the Double-Alpha Transfer Effect for a Deep Optical Potential. Chinese Physics C, 1996, 20(S1): 85-91.
[19]	Zhong Chasheng , Shen hongqing , Shen Jianping , Li Guangiie . Investigation of the Nuclear Shadowing Effect in the Small x Region. Chinese Physics C, 1990, 14(S1): 59-63.
[20]	Ma Boqiang , Sun Ji . Different Treatments of Nuclear Binding Effect in Deep Inelastic Lepton Nucleus Scattering. Chinese Physics C, 1988, 12(S4): 337-346.

Access

Get Citation

M. Bashkanov (for the WASA-at-COSY collaboration). ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin[J]. Chinese Physics C, 2010, 34(9): 1339-1341. doi: 10.1088/1674-1137/34/9/037

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-01-26
Revised: 1900-01-01

Article Metric

Article Views(2272)
PDF Downloads(359)
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

ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin

Physikalisches Institut, Univ. Tubingen, D-72076 Tubingen, Germany

Received Date: 2010-01-26

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

A short overview over the ABC phenomenon is given, which is known since 50 years without any satisfactory explanation. On the basis of new exclusive and kinematically complete data obtained with the WASA detector at COSY we show that this phenomenon is linked with a resonant energy dependence in the total cross section of isoscalar double-pionic fusion processes. This resonance structure is connected with the baryon-baryon system, in particular with the pn and ΔΔ systems, however, has a mass, which is 90 MeV below the nominal ΔΔ threshold and a width of only 70 MeV, i.e., five times smaller than expected from a conventional t-channel ΔΔ scenario.

HTML

Reference (1)

ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

ABC effect in double-pionic nuclear fusion and a pn resonance as its possible origin

HTML

目录