Evidence for a QCD accelerator in relativistic heavy-ion collisions. (arXiv:2110.09432v1 [nucl-ex])
<a href="http://arxiv.org/find/nucl-ex/1/au:+Bland_L/0/1/0/all/0/1">L.C. Bland</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Brash_E/0/1/0/all/0/1">E.J. Brash</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Crawford_H/0/1/0/all/0/1">H.J. Crawford</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Drees_A/0/1/0/all/0/1">A. Drees</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Engelage_J/0/1/0/all/0/1">J. Engelage</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Folz_C/0/1/0/all/0/1">C. Folz</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Judd_E/0/1/0/all/0/1">E. Judd</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Li_X/0/1/0/all/0/1">X. Li</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Minaev_N/0/1/0/all/0/1">N.G. Minaev</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Munroe_R/0/1/0/all/0/1">R.N. Munroe</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Nogach_L/0/1/0/all/0/1">L. Nogach</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Ogawa_A/0/1/0/all/0/1">A. Ogawa</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Perkins_C/0/1/0/all/0/1">C. Perkins</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Planinic_M/0/1/0/all/0/1">M. Planinic</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Quintero_A/0/1/0/all/0/1">A. Quintero</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Schnell_G/0/1/0/all/0/1">G. Schnell</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Simatovic_G/0/1/0/all/0/1">G. Simatovic</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Shanmuganathan_P/0/1/0/all/0/1">P. Shanmuganathan</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Surrow_B/0/1/0/all/0/1">B. Surrow</a>, <a href="http://arxiv.org/find/nucl-ex/1/au:+Vasiliev_A/0/1/0/all/0/1">A.N. Vasiliev</a>
We report measurements of forward jets produced in Cu+Au collisions at
$sqrt{s_{NN}}=200$ 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 {it 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.
We report measurements of forward jets produced in Cu+Au collisions at
$sqrt{s_{NN}}=200$ 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 {it 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.
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