Exotic pentaquarks as Gamov—Teller resonances

Dmitri Diakonov

doi:10.1088/1674-1137/34/9/028

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1298-1302 DOI: 10.1088/1674-1137/34/9/028

Exotic pentaquarks as Gamov—Teller resonances

Dmitri Diakonov ^,

Petersburg Nuclear Physics Institute, Gatchina 188300, St. Petersburg, Russia

Abstract
HTML
Reference
Related

PDF

Abstract：
If the number of colors N_c is taken large, baryons and their excitations can be considered in a mean-field approach. We argue that the mean field in baryons breaks spontaneously the spherical and SU(3) flavor symmetries, but retains the SU(2) symmetry of simultaneous rotations in space and isospace. The one-quark and quark-hole excitations in the mean field, together with the SU(3) rotational bands about them determine the spectrum of baryon resonances, which turns out to be in good accordance with reality when one puts Nc=3. A by-product of this scheme is a confirmation of the light pentaquark Θ⁺ baryon uudds as a typical Gamov—Teller resonance long known in nuclear physics. An extension of the same large-N_c logic to charmed baryons leads to a prediction of a anti-decapenta (15)-plet of charmed pentaquarks, two of which, B⁺⁺_c=cuuds and B⁺_c= cudds, may be light and stable with respect to strong decays.

References

[1]

Witten E. Nucl. Phys. B, 1979, 160: 57-1152 Diakonov D. Prog. Part. Nucl. Phys., 2003, 51: 173-2223 Diakonov D, Petrov V, Pobylitsa P. Nucl. Phys. B, 1988,306: 809-8484 Diakonov D. JETP Letters, 2009, 90: 407-411; Nucl. Phys.A, 2009, 827: 264C-266C5 Diakonov D, Petrov V. The Multifaceted skyrmion, eds.Brown G and Rho M, World Scienti c, 2010. 57; arXiv:0812.1212 [hep-ph]6 Witten E. Nucl. Phys. B, 1983, 223: 433-4447 Blotz A, Diakonov D, Goeke K et al. Nucl. Phys. A, 1993,355: 765-7928 ZOU B S. Eur. Phys. J. A, 2008, 35: 325-3289 Diakonov D, Petrov V, Polyakov M. Zeit. Phys. A, 1997,359: 305-31410 Diakonov D, Petrov V. Phys. Rev. D, 2004, 69: 05600211 WU B, MA B Q. Phys. Rev. D, 2004, 70: 03402512 Diakonov D. arXiv:1003.2157[hep-ph]

[1]	X. Han , C. P. Shen . A mathematical solution for the parameters of three interfering resonances. Chinese Physics C, 2018, 42(4): 043001. doi: 10.1088/1674-1137/42/4/043001
[2]	Bin Zhou , Zhi-Feng Sun , Xiang Liu , Shi-Lin Zhu . Chiral corrections to the 1^-+ exotic meson mass. Chinese Physics C, 2017, 41(4): 043101. doi: 10.1088/1674-1137/41/4/043101
[3]	Ya-Juan Tian , Tai-Hua Heng , Zhong-Ming Niu , Quan Liu , Jian-You Guo . Exploration of resonances by using complex momentum representation. Chinese Physics C, 2017, 41(4): 044104. doi: 10.1088/1674-1137/41/4/044104
[4]	Rui Chen , Jun He , Xiang Liu . Possible strange hidden-charm pentaquarks from ∑_c^()D_s^ and Ξ_c^(',) interactions. Chinese Physics C, 2017, 41(10): 103105. doi: 10.1088/1674-1137/41/10/103105
[5]	Ying Chen , Wei-Feng Chiu , Ming Gong , Long-Cheng Gui , Zhao-Feng Liu . Exotic vector charmonium and its leptonic decay width. Chinese Physics C, 2016, 40(8): 081002. doi: 10.1088/1674-1137/40/8/081002
[6]	R. A. Briceño , T. D. Cohen , S. Coito , J. J. Dudek , E. Eichten , C. S. Fischer , M. Fritsch , W. Gradl , A. Jackura , M. Kornicer , G. Krein , R. F. Lebed , F. A. Machado , R. E. Mitchell , C. J. Morningstar , M. Peardon , M. R. Pennington , K. Peters , J. M. Richard , C. P. Shen , M. R. Shepherd , T. Skwarnicki , E. S. Swanson , A. P. Szczepaniak , C. Z. Yuan . Issues and Opportunities in Exotic Hadrons. Chinese Physics C, 2016, 40(4): 042001. doi: 10.1088/1674-1137/40/4/042001
[7]	CAO Xu . Disentangling the nature of resonances in coupled-channel models. Chinese Physics C, 2015, 39(4): 041002. doi: 10.1088/1674-1137/39/4/041002
[8]	DU Meng-Lin , CHEN Wei , CHEN Xiao-Lin , ZHU Shi-Lin . Possible J^PC = 0^+- exotic states. Chinese Physics C, 2013, 37(3): 033104. doi: 10.1088/1674-1137/37/3/033104
[9]	Eef van , George Rupp . Evidence for further charmonium vector resonances. Chinese Physics C, 2011, 35(4): 319-324. doi: 10.1088/1674-1137/35/4/001
[10]	ZHI Qi-Jun , YU Yan , ZHENG Qiang . Theoretical investigation of the Gamow-Teller transition across N=40 shell. Chinese Physics C, 2011, 35(11): 1022-1025. doi: 10.1088/1674-1137/35/11/008
[11]	M. Nielsen . New exotic charmonium states. Chinese Physics C, 2010, 34(9): 1157-1162. doi: 10.1088/1674-1137/34/9/002
[12]	C. Garcia-Recio , V. K. Magas , T. Mizutani , J. Nieves , A. Ramos , L. L. Salcedo . Charmed baryon resonances with heavy-quark symmetry. Chinese Physics C, 2009, 33(12): 1323-1326. doi: 10.1088/1674-1137/33/12/046
[13]	T. Hyodo , D. Jido , H.-Ch. Kim , H. Nagahiro , S.I. Nam , M. Oka . Reaction dynamics for photoproductions of baryon resonances. Chinese Physics C, 2009, 33(12): 1167-1174. doi: 10.1088/1674-1137/33/12/019
[14]	SUN Bao-Xi , Vicente Vacas . Dynamically generated resonances. Chinese Physics C, 2009, 33(12): 1132-1139. doi: 10.1088/1674-1137/33/12/014
[15]	FANG De-Qing , GUO Wei , MA Chun-Wang , WANG Kun , YAN Ting-Zhi , MA Yu-Gang , CAI Xiang-Zhou , SHEN Wen-Qing , REN Zhong-Zhou , SUN Zhi-Yu . Studies on the exotic structure of ²³Al. Chinese Physics C, 2008, 32(S2): 34-37.
[16]	Ni Zhixiang . Nonlinear Spectrum-Generating Algebra for the Symmetrical Pöschl-Teller Potential. Chinese Physics C, 1999, 23(3): 289-297.
[17]	Zhang Changhua , Gu Jinnan . Gamow-Teller Transitions of Nuclei with A=147-153. Chinese Physics C, 1996, 20(S3): 295-299.
[18]	Zhang Changhua , Gu Jinnan . Gamow-Teller Transitions of Nuclei With A=147-153. Chinese Physics C, 1996, 20(8): 745-749.
[19]	Yu Hong , Shen Qixing . J/ψ Hadronic Decay and 1^-+ Exotic State. Chinese Physics C, 1991, 15(S3): 283-287.
[20]	Xia Keding , Cai Yanhuang . Multipole Giant Resonances in Highly Excited Nuclei. Chinese Physics C, 1989, 13(S1): 79-86.

Access

Get Citation

Dmitri Diakonov. Exotic pentaquarks as Gamov—Teller resonances[J]. Chinese Physics C, 2010, 34(9): 1298-1302. doi: 10.1088/1674-1137/34/9/028

Dmitri Diakonov. Exotic pentaquarks as Gamov—Teller resonances[J]. Chinese Physics C, 2010, 34(9): 1298-1302. doi: 10.1088/1674-1137/34/9/028 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2010-02-09
Revised: 1900-01-01

Article Metric

Article Views(2439)
PDF Downloads(512)
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

Exotic pentaquarks as Gamov—Teller resonances

Corresponding author: Dmitri Diakonov,

Petersburg Nuclear Physics Institute, Gatchina 188300, St. Petersburg, Russia

Received Date: 2010-02-09

Accepted Date: 1900-01-01

Available Online: 2010-09-05

Abstract:

If the number of colors N_c is taken large, baryons and their excitations can be considered in a mean-field approach. We argue that the mean field in baryons breaks spontaneously the spherical and SU(3) flavor symmetries, but retains the SU(2) symmetry of simultaneous rotations in space and isospace. The one-quark and quark-hole excitations in the mean field, together with the SU(3) rotational bands about them determine the spectrum of baryon resonances, which turns out to be in good accordance with reality when one puts Nc=3. A by-product of this scheme is a confirmation of the light pentaquark Θ⁺ baryon uudds as a typical Gamov—Teller resonance long known in nuclear physics. An extension of the same large-N_c logic to charmed baryons leads to a prediction of a anti-decapenta (15)-plet of charmed pentaquarks, two of which, B⁺⁺_c=cuuds and B⁺_c= cudds, may be light and stable with respect to strong decays.

HTML

Reference (1)

Exotic pentaquarks as Gamov—Teller resonances

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article