Evidence for a QCD accelerator in relativistic heavy-ion collisions

被引：2

作者：

Bland, L. C. ^{[1
]}

Brash, E. J. ^{[2
]}

Crawford, H. J. ^{[3
]}

Drees, A. ^{[4
]}

Engelage, J. ^{[3
]}

Folz, C. ^{[4
]}

Judd, E. ^{[3
]}

Li, X. ^{[5
]}

Minaev, N. G. ^{[6
]}

Munroe, R. N. ^{[2
]}

Nogach, L. ^{[6
]}

Ogawa, A. ^{[4
]}

Perkins, C. ^{[3
]}

Planinic, M. ^{[7
]}

Quintero, A. ^{[1
]}

Schnell, G. ^{[8
,9
]}

Simatovic, G. ^{[7
]}

Shanmuganathan, P. ^{[4
,10
]}

Surrow, B. ^{[1
]}

Vasiliev, A. N. ^{[6
]}

机构：

[1] Temple Univ, Philadelphia, PA 19122 USA

[2] Christopher Newport Univ, Newport News, VA 23606 USA

[3] Univ Calif Berkeley, Berkeley, CA 94720 USA

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

[5] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[6] Natl Res Ctr Kurchatov Inst, Inst High Energy Phys, Protvino 142281, Russia

[7] Univ Zagreb, HR-10002 Zagreb, Croatia

[8] Univ Basque Country UPV EHU, Bilbao 48080, Spain

[9] IKERBASQUE, Basque Fdn Sci, Bilbao 48009, Spain

[10] Kent State Univ, Moscow Engn Phys Inst, Kent, OH 44242 USA

来源：

PHYSICAL REVIEW C | 2022年 / 106卷 / 03期

关键词：

JET PRODUCTION; MOMENTUM DEPENDENCE; TRANSVERSE-MOMENTUM; PROTON COLLISIONS; LEAD COLLISIONS; SUPPRESSION; RAPIDITY; SPECTRA; MODEL; TEV;

D O I：

10.1103/PhysRevC.106.034902

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We report measurements of forward jets produced in Cu+Au collisions at root s(NN) = 200 GeV at the Relativistic Heavy Ion Collider. The jet-energy distributions extend to energies much larger than expected by Feynman scaling. This constitutes the first clear evidence for Feynman-scaling violations in heavy-ion collisions. Such high-energy particle production has been in models via QCD string interactions, but so far is untested by experiment. One such model calls this a hadronic accelerator. Studies with a particular heavy-ion event generator (HIJING) show that photons and mesons exhibit such very high-energy production in a heavy-ion collision, so a QCD accelerator appropriately captures the physics associated with such QCD string interactions. All models other than HIJING used for hadronic interactions in the study of extensive air showers from cosmic rays either do not include these QCD string interactions or have smaller effects from the QCD accelerator.

引用

页数：8

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