Charge Dependence of the Critical Density of Strange Quark Matter in a New Mass Scaling

  • One of our recent works demonstrates that the previous quark mass scaling should be modified, which has significantly changed the density behavior of the sound velocity in strange quark matter. In the present study, we provide a selfconsistent thermodynamic treatment to determine the parmeter in the mass formula, and prove that, under the new quark mass scaling, proper negative charges can still lower the critical density, and thus be favorable to the searches for strangelets in heavy ion experiments. Naturally, too much negative charges can still make it impossible to maintain flavor equilibrium.
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  • [1] . Witten E .Phys.Rev .,1984 ,D30 :2 72 2. ZHOU LeMing ,PENG GuangXiong ,NING PingZhi.Prog .Phys.(in Chinese) ,1999,19( 1) :59(周乐明 ,彭光雄 ,宁平治 .物理学进展 ,1999,19( 1) :59) 3. Farhi E ,Jaffe R L .Phys .Rev .,1984 ,D30 :2 379;Berger M S ,Jaffe R L .Phys.Rev .,1987,C35:2 13 ;Gilson E P ,Jaffe R L .Phys .Rev.Lett.,1993 ,71:332 4. Madsen Jes.Phys.Rev .Lett.,1993 .61:2 90 9;Phys.Rev .,1993 ,D4 7:5156;1994 ,50 :332 8;Madsen Jes,Jensen Dan M ,Christiansen Michael B .Phys .Rev.1996,C53 :1883 5. Parija B C .Phys.Rev .,1993 ,C4 8:2 4 83 ;1995,C51:14 73 6. Chakrabarty S ,Raha S ,Sinha B .Phys.Lett.,1989,B2 2 9:112 ;Chakrabaty S .Phys.Rev.,1991,D4 3 :62 7;1993 ,D4 8 :14 0 9;1996,D54 :130 6 7. Benvenuto O G ,Lugones G .Phys.Rev .,1995,D51:1989;Lugones G ,Benvenuto O G .Phys.Rev .,D52 :12 76 8. PENG G X ,NING P Z ,CHIANG H C .Phys.Rev .,1997,C56:4 91 9. ZHOU LeMing,PENG GuangXiong ,NING PingZhi.High Energy Phys.and Nucl.Phys.(in Chinese) ,1999,2 3( 4 ) :360(周乐明 ,彭光雄 ,宁平治 .高能物理与核物理 ,1999,2 3( 4 ) :360 )10. Greiner C ,Kock P,Stocker H.Phys.Rev.Lett,1987,58:182 5;Greiner C ,Rischke D H,St¨ocker H ,Koch P.Phys.Rev.,1988,D38:2 797;Greiner C ,Koch P ,Stocker H .Phys.Rev .,1991,D4 4 :351711. Schaffner Bielich Jurgen ,Greiner Carsten ,Diener Alexander,Stocker Horst.Phys.Rev .,1997,D55:30 3812. PENG G X ,CHIANG H C ,NING P Z et al.Phys.Rev .,1999,C59:34 5213. PENG G X ,CHIANG H C ,YANG J J,et al.Phys.Rev .,2 0 0 0 ,C61:0 152 0
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PENG GuangXiong, JIANG HuanQing, LIU ZhiJun, ZHOU LeMing, LIU Bo, CHENG XingGuo and LI JingHua. Charge Dependence of the Critical Density of Strange Quark Matter in a New Mass Scaling[J]. Chinese Physics C, 2000, 24(8): 732-738.
PENG GuangXiong, JIANG HuanQing, LIU ZhiJun, ZHOU LeMing, LIU Bo, CHENG XingGuo and LI JingHua. Charge Dependence of the Critical Density of Strange Quark Matter in a New Mass Scaling[J]. Chinese Physics C, 2000, 24(8): 732-738. shu
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Received: 2000-01-14
Revised: 1900-01-01
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Charge Dependence of the Critical Density of Strange Quark Matter in a New Mass Scaling

    Corresponding author: PENG GuangXiong,
  • Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China2 Department of Physics, Nankai University, Tianjin 300071, China3 Department of Electronic Engineering, Shiyan College of Career and Technology, Shiyan 442000, China4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China

Abstract: One of our recent works demonstrates that the previous quark mass scaling should be modified, which has significantly changed the density behavior of the sound velocity in strange quark matter. In the present study, we provide a selfconsistent thermodynamic treatment to determine the parmeter in the mass formula, and prove that, under the new quark mass scaling, proper negative charges can still lower the critical density, and thus be favorable to the searches for strangelets in heavy ion experiments. Naturally, too much negative charges can still make it impossible to maintain flavor equilibrium.

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