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Cosmic-ray double-core gamma-family events at ultrahigh energies
Cao, Z; Ding LK(丁林恺); Zhu QQ(朱清棋); Ding, LK; Zhu, QQ; He, YD
1997
发表期刊PHYSICAL REVIEW D
卷号56期号:11页码:7361-7375
通讯作者UNIV OREGON,DEPT PHYS,EUGENE,OR 97403 ; ACAD SINICA,INST HIGH ENERGY PHYS,COSM RAY LAB,BEIJING 100039,PEOPLES R CHINA ; UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720 ; UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720 ; UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720 ; UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,INST NUCL & PARTICLE ASTROPHYS,BERKELEY,CA 94720
文章类型Article
摘要We present a detailed account of our analysis on ultrahigh-energy cosmic-ray double-core gamma-family events observed in emulsion chambers at mountain levels. Extending the leading-order perturbative QCD jet calculations for hadron-hadron collisions to hadron-nucleus collisions by including nuclear effects, we performed a Monte Carlo simulation of cosmic-ray particle interaction and propagation in the atmosphere. We find a significant excess of event rates at large transverse momenta with respect to our prediction based on perturbative QCD. The excess cannot be accounted for by a compositeness model of quarks with a characteristic energy scale lower limit Lambda(c)>1.4 TeV or a possible value of Lambda(c) similar or equal to 1.6 TeV from the CDF at the Fermilab Tevatron. We discuss possible onset of new physics indicated by the large discrepancy at E(lab)similar to 10(4)-10(5) TeV, an energy region beyond the reach of existing colliders but within the range of future hadron colliders such as the proposed Large Hadron Collider at CERN.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.56.7361
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:A1997YH61000060
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240112
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Cao, Z,Ding LK,Zhu QQ,et al. Cosmic-ray double-core gamma-family events at ultrahigh energies[J]. PHYSICAL REVIEW D,1997,56(11):7361-7375.
APA Cao, Z,丁林恺,朱清棋,Ding, LK,Zhu, QQ,&He, YD.(1997).Cosmic-ray double-core gamma-family events at ultrahigh energies.PHYSICAL REVIEW D,56(11),7361-7375.
MLA Cao, Z,et al."Cosmic-ray double-core gamma-family events at ultrahigh energies".PHYSICAL REVIEW D 56.11(1997):7361-7375.
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