Medium effects in &Lambda;K<sup>+</sup> pair production by 2.83 GeV protons on nuclei

E. Ya. Paryev; M. Hartmann; Yu. T. Kiselev

doi:10.1088/1674-1137/41/12/124108

Chinese Physics C> 2017, Vol. 41> Issue(12) : 124108 DOI: 10.1088/1674-1137/41/12/124108

Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei

1.
Institute for Nuclear Research, Russian Academy of Sciences, Moscow 117312, Russia
2.
Institute for Theoretical and Experimental Physics, Moscow 117218, Russia
3.
Institut fmü
4.
Institute for Theoretical and Experimental Physics, Moscow 117218, Russia

Abstract
HTML
Reference
Related

PDF

Abstract：
We study ΛK⁺ pair production in the interaction of protons of 2.83 GeV kinetic energy with C, Cu, Ag, and Au target nuclei in the framework of the nuclear spectral function approach for incoherent primary proton-nucleon and secondary pion-nucleon production processes, and processes associated with the creation of intermediate Σ⁰K⁺ pairs. The approach accounts for the initial proton and final Λ hyperon absorption, final K⁺ meson distortion in nuclei, target nucleon binding, and Fermi motion, as well as nuclear mean-field potential effects on these processes. We calculate the Λ momentum dependence of the absolute ΛK⁺ yield from the target nuclei considered, in the kinematical conditions of the ANKE experiment, performed at COSY, within the different scenarios for the Λ-nucleus effective scalar potential. We show that the above observable is appreciably sensitive to this potential in the low-momentum region. Therefore, direct comparison of the results of our calculations with the data from the ANKE-at-COSY experiment can help to determine the above potential at finite momenta. We also demonstrate that the two-step pion-nucleon production channels dominate in the low-momentum ΛK⁺ production in the chosen kinematics and, therefore, they have to be taken into account in the analysis of these data.
- proton-nucleus reactions ,
- medium effects ,
- hyperon nuclear potential

References

[1]	A. Gal, E. V. Hungerford, and D. J. Millener, Rev. Mod. Phys., 88:035004(2016)
[2]	M. Nekipelov et al, Phys. Lett. B, 540:207(2002); G. Agakishiev et al, Phys. Rev. C, 82:044907(2010)
[3]	M. Lutz, Phys. Lett. B, 426:12(1998)
[4]	L. Tolos, A. Ramos, and E. Oset, Phys. Rev. C, 74:015203(2006)
[5]	L. Tolos, D. Cabrera, and A. Ramos, Phys. Rev. C, 78:045205(2008)
[6]	L. Tolos, A. Ramos, A. Polls, and T. T. S. Kuo, Nucl. Phys. A, 690:547(2001); L. Tolos, A. Ramos, and A. Polls, Phys. Rev. C, 65:054907(2002)
[7]	E. Friedman, A. Gal, J. Mares, and A. Cieply, Phys. Rev. C, 60:024314(1999)
[8]	A. Sibirtsev and W. Cassing, arXiv:nucl-th/9909053; W. Scheinast et al, Phys. Rev. Lett., 96:072301(2006); T. Kishimoto et al, Nucl. Phys. A, 827:321c (2009); H. W. Barz and L. Naumann, Phys. Rev. C, 68:041901(R) (2003)
[9]	Yu. T. Kiselev et al, Phys. Rev. C, 92:065201(2015)
[10]	V. K. Magas et al, Phys. Rev. C, 71:065202(2005); A. Polyanskiy et al, Phys. Lett. B, 695:74(2011); M. Hartmann et al, Phys. Rev. C, 85:035206(2012); T. Ishikawa et al, Phys. Lett. B, 608:215(2005); M. H. Wood et al, Phys. Rev. Lett., 105:112301(2010)
[11]	C. Fuchs, Prog. Part. Nucl. Phys., 56:1(2006); C. Hartnack et al, Phys. Rep., 510:119(2012); O. Buss et al, Phys. Rep., 512:1(2012)
[12]	Z. Q. Feng, Nucl. Phys. A, 919:32(2013); Z. Q. Feng, W. J. Xie, and G. M. Jin, Phys. Rev. C, 90:064604(2014)
[13]	G. Bunce et al, Phys. Rev. Lett., 36:1113(1976); K. Heller et al, Phys. Lett. B, 68:480(1977); K. Heller et al, Phys. Rev. Lett., 41:607(1978); F. Lomanno et al, Phys. Rev. Lett., 43:1905(1979); F. Abe et al, Phys. Rev. Lett., 50:1102(1983); A. M. Smith et al, Phys. Lett. B, 185:209(1987); B. E. Bonner et al, Phys. Rev. D, 38:729(1988); V. Fanti et al (NA48 Collaboration), Eur. Phys. J. C, 6:265(1999); B. Lundberg et al, Phys. Rev. D, 40:3557(1989)
[14]	G. Agakishiev et al, Eur. Phys. J. A, 50:81(2014)
[15]	O. Hashimoto and H. Tamura, Prog. Part. Nucl. Phys., 57:279(2010); A. Feliciello and T. Nagae, Rep. Prog. Phys., 78:096301(2015)
[16]	M. Kaskulov and E. Oset, Phys. Rev. C, 73:045213(2006)
[17]	M. Kaskulov, L. Roca, and E. Oset, Eur. Phys. J. A, 28:139(2006); E. Ya. Paryev, Yad. Fiz., 75:1602(2012)
[18]	M. F. M. Lutz, C. L. Copra, and M. Moeller, Nucl. Phys. A, 808:124(2008)
[19]	D. Cabrera et al, Phys. Rev. C, 90:055207(2014)
[20]	S. Petschauer et al, Eur. Phys. J. A, 52:15(2016); Ulf-G. Meissner and J. Haidenbauer, arXiv:1603.06429[nucl-th]
[21]	V. Flaminio et al Compilation of cross-sections. Ⅲ-p and bar p} induced reactions. CERN-HERA 79-03 (1979)
[22]	J. Balewski et al (COSY-11 Collaboration), Nucl. Phys. A, 626:85c (1997)
[23]	J. T. Balewski et al (COSY-11 Collaboration), Phys. Lett. B, 420:211(1998)
[24]	S. Sewerin et al (COSY-11 Collaboration), Phys. Rev. Lett., 83:682(1999)
[25]	P. Kowina et al (COSY-11 Collaboration), Eur. Phys. J. A, 22:293(2004)
[26]	R. Bilger et al (COSY-TOF Collaboration), Phys. Lett. B, 420:217(1998)
[27]	S. Abd El-Samad et al (COSY-TOF Collaboration), Phys. Lett. B, 632:27(2006); S. Abd El-Samad et al (COSY-TOF Collaboration), Phys. Lett. B, 688:142(2010)
[28]	M. Abdel-Bary et al (COSY-TOF Collaboration), Eur. Phys. J. A, 46:27(2010)
[29]	Yu. Valdau et al (ANKE Collaboration), Phys. Lett. B, 652:245(2007); Yu. Valdau et al (ANKE Collaboration), Phys. Rev. C, 81:045208(2010)
[30]	J. Adamczewski-Musch et al (HADES Colaboration), Phys. Rev. C, 95:015207(2017); arXiv:1611.01040[nucl-ex]
[31]	E. Ya. Paryev, Eur. Phys. J. A, 5:307(1999)
[32]	G. Fldt and C. Wilkin, Z. Phys. A, 357:241(1997)
[33]	M. Nekipelov et al, J. Phys. G:Nucl. Part. Phys., 34:627(2007)
[34]	G. Agakishiev et al, Phys. Rev. C, 90:015202(2014); arXiv:1403.6662[nucl-ex]
[35]	G. Q. Li, C.-H. Lee, G. E. Brown, Nucl. Phys. A, 625:372(1997)
[36]	G. Agakishiev et al, Phys. Rev. C, 90:054906(2014); arXiv:1404.7011[nucl-ex]
[37]	Yu. Valdau et al (ANKE Collaboration), Phys. Rev. C, 84:055207(2011)
[38]	M. Bscher et al, Eur. Phys. J. A, 22:301(2004)
[39]	K. Tsushima et al, Phys. Rev. C, 59:369(1999)
[40]	A. N. Ivanov et al, arXiv:nucl-th/0509055
[41]	G. Fldt and C. Wilkin, Eur. Phys. J. A, 24:431(2005)
[42]	E. Ya. Paryev, J. Phys. G:Nucl. Part. Phys., 40:025201(2013)
[43]	H. Nagahiro, M. Takizawa, and S. Hirenzaki, Phys. Rev. C, 74:045203(2006)
[44]	E. Ya. Paryev, Eur. Phys. J. A, 9:521(2000)
[45]	K. Tsushima et al, Phys. Lett. B, 429:239(1998)
[46]	C.-H. Lee et al, Phys. Lett. B, 412:235(1997)
[47]	C. B. Dover and G. E. Walker, Phys. Rep., 89:1(1982); D. J. Millener, C. B. Dover and A. Gal, Phys. Rev. C, 38:2700(1988); Y. Yamamoto, H. Bando, and J. Zofka, Prog. Theor. Phys., 80:757(1988)
[48]	M. Rufa et al, Phys. Rev. C, 42:2469(1990)
[49]	N. K. Glendenning et al, Phys. Rev. C, 48:889(1993)
[50]	Y. Yamamoto and H. Bando, Phys. Lett. B, 214:173(1988)
[51]	J. Hu, E. Hiyama, and H. Toki, Phys. Rev. C, 90:014309(2014)
[52]	M. Kohno and Y. Fujiwara, Phys. Rev. C, 79:054318(2009); M. Kohno, Phys. Rev. C, 81:014003(2010)
[53]	T. Inoue et al, arXiv:1612.08399[hep-lat]
[54]	G. Q. Li and C. M. Ko, Phys. Rev. C, 54:1897(1996)
[55]	E. Ya. Paryev, Yad. Fiz., 71:1985(2008)
[56]	E. Ya. Paryev, J. Phys. G:Nucl. Part. Phys., 43:015106(2016)
[57]	E. Ya. Paryev, J. Phys. G:Nucl. Part. Phys., 37:105101(2010)
[58]	E. Ya. Paryev, M. Hartmann, and Yu. T. Kiselev, J. Phys. G:Nucl. Part. Phys., 42:075107(2015)
[59]	E. Ya. Paryev, J. Phys. G:Nucl. Part. Phys., 36:015103(2009)
[60]	S. V. Efremov and E. Ya. Paryev, Eur. Phys. J. A, 1:99(1998)
[61]	E. Ya. Paryev, Eur. Phys. J. A, 7:127(2000)
[62]	S. K. Singh and M. J. Vicente Vacas, Phys. Rev. D, 74:053009(2006)
[63]	J. Haidenbauer and Ulf-G. Meissner, Nucl. Phys. A, 936:29(2015)
[64]	E. Friedman and A. Gal, Phys. Rep., 452:89(2007)
[65]	J. Cugnon and R. M. Lombard, Nucl. Phys. A, 422:635(1984)
[66]	A. Baldini et al, Landolt-Brnstein, New Series, I/12a (1988)
[67]	I. Zychor et al, Phys. Lett. B, 660:167(2008)
[68]	E. Ya. Paryev, Phys. Atom. Nucl., 69:721(2006)
[69]	A. V. Akindinov et al, J. Phys. G:Nucl. Part. Phys., 37:015107(2010)
[70]	S. Friedrich et al, Phys. Lett. B, 736:26(2014)

[1]	Benbouzid N , Allal M , Fellah M . Isovector pairing and particle-number fluctuation effects on the spectroscopic factors of one-proton stripping and one-neutronpick-up reactions in proton-rich nuclei. Chinese Physics C, 2018, 42(8): 084104. doi: 10.1088/1674-1137/42/8/084104
[2]	U. T. Yakhshiev , Hyun-Chul Kim , B. Turimov , M. M. Musakhanov , Emiko Hiyama . Instanton effects on the heavy-quark static potential. Chinese Physics C, 2017, 41(8): 083102. doi: 10.1088/1674-1137/41/8/083102
[3]	Manjeet Singh Gautam . Static versus energy-dependent nucleus-nucleus} potential for description of sub-barrier fusion dynamics of ₈¹⁶O+₅₀^112,116,120Sn reactions. Chinese Physics C, 2015, 39(11): 114102. doi: 10.1088/1674-1137/39/11/114102
[4]	LI Zhi-Hui , TANG Jing-Yu . A CW superconducting linac as the proton driver for a medium baseline neutrino beam in China. Chinese Physics C, 2014, 38(12): 127001. doi: 10.1088/1674-1137/38/12/127001
[5]	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
[6]	CAO Dong-Liang , REN Zhong-Zhou , DONG Tie-Kuang . A theoretical study of halo structure using elastic proton-nucleus scattering. Chinese Physics C, 2013, 37(3): 034103. doi: 10.1088/1674-1137/37/3/034103
[7]	ZHOU Shu-Hua . Environmental al effects on nuclear decay rates. Chinese Physics C, 2011, 35(5): 449-452. doi: 10.1088/1674-1137/35/5/008
[8]	XIE Wen-Jie . Transverse momentum spectra in high-energy nucleus-nucleus, proton-nucleus and proton-proton collisions. Chinese Physics C, 2011, 35(12): 1111-1119. doi: 10.1088/1674-1137/35/12/006
[9]	WU Feng , YE Wei . System size effects on probing nuclear dissipation with neutrons. Chinese Physics C, 2010, 34(5): 551-554. doi: 10.1088/1674-1137/34/5/007
[10]	KANG Miao , ZHOU Xia , WANG Xiao-Dong , HENG Yao-Fu . Influence of medium effects on the rotating hybrid stars. Chinese Physics C, 2010, 34(11): 1696-1699. doi: 10.1088/1674-1137/34/11/005
[11]	D. Gamermann , C. Garcia-Recio , R. Molina , J. Nieves , E. Oset , A. Ramos . Charmed hadrons in nuclear medium. Chinese Physics C, 2010, 34(9): 1335-1338. doi: 10.1088/1674-1137/34/9/036
[12]	ZHENG Yong-Nan , ZHOU Dong-Mei . Nuclear structure of proton-rich unstable nucleus ²⁸P studied by g-factor measurement. Chinese Physics C, 2009, 33(S1): 215-217. doi: 10.1088/1674-1137/33/S1/069
[13]	WEN Wu , SHEN Hong . Nucleon properties in the nuclear medium. Chinese Physics C, 2008, 32(S2): 81-84.
[14]	YANG You-Chang , CHEN Hong , JIANG Huan-Qing . η production in proton-nucleus collisions near threshold. Chinese Physics C, 2008, 32(4): 254-258. doi: 10.1088/1674-1137/32/4/003
[15]	Qin Keyu , Jiang Huanqing , Liu Bo . Initial-State Interaction and J/ψ Suppression in High-Energy Proton-Nucleus Collisions. Chinese Physics C, 1996, 20(S4): 359-362.
[16]	Mao Guangjun , Zhao Enguang , Li Zhuxia , Zhuo Yizhong . In-medium △ Absorption Cross Section. Chinese Physics C, 1996, 20(S4): 387-390.
[17]	Ge Lingxiao , Zeng Xianghua . In-Medium Nucleon-Nucleon Cross Sections in the Nonrelativistic Energy Region. Chinese Physics C, 1995, 19(S4): 389-396.
[18]	Feng Dachun , Liu Wenqin , Ma Zhongyu . Analysis of Relativistic Optical Potential for Medium-Energy Protons. Chinese Physics C, 1993, 17(S1): 81-88.
[19]	Li Yangguo . Relativistic Study of Proton-Nucleus Elastic Scattering at Lower Energies. Chinese Physics C, 1989, 13(S1): 59-68.
[20]	Lu Zhaoqi , D. H. E. Gross , Sa Benhao , Zheng Yuming . Charge Dispersion of Fragments in High Energy Proton-Nucleus Collisions. Chinese Physics C, 1988, 12(S1): 45-50.

Access

Get Citation

E. Ya. Paryev, M. Hartmann and Yu. T. Kiselev. Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei[J]. Chinese Physics C, 2017, 41(12): 124108. doi: 10.1088/1674-1137/41/12/124108

E. Ya. Paryev, M. Hartmann and Yu. T. Kiselev. Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei[J]. Chinese Physics C, 2017, 41(12): 124108. doi: 10.1088/1674-1137/41/12/124108 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2017-07-28
Revised: 2017-10-05

Fund

Supported by the Ministry of Education and Science of the Russian Federation

Article Metric

Article Views(1511)
PDF Downloads(22)
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

Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei

HTML

目录

Medium effects in ΛK+ pair production by 2.83 GeV protons on nuclei

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article

Medium effects in ΛK+ pair production by 2.83 GeV protons on nuclei

HTML

目录

Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei

Medium effects in ΛK⁺ pair production by 2.83 GeV protons on nuclei