تقرير
Observation of Feynman scaling violations and evidence for a new resonance at RHIC
| العنوان: | Observation of Feynman scaling violations and evidence for a new resonance at RHIC |
|---|---|
| المؤلفون: | Bland, L. C., Brash, E. J., Crawford, H. J., Derevschikov, A. A., Drees, K. A., Engelage, J., Folz, C., Judd, E. G., Li, X., Minaev, N. G., Munroe, R. N., Nogach, L., Ogawa, A., Perkins, C., Planinic, M., Quintero, A., Schnell, G., Shanmuganathan, P. V., Simatovic, G., Surrow, B., Throwe, T. G., Vasiliev, A. N. |
| سنة النشر: | 2019 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | We report measurements of forward jets and dijets produced in Cu+Au collisions at $\sqrt{s_{NN}}=200$ GeV at the Relativistic Heavy Ion Collider. We also report dijet production cross sections in p+p collisions at $\sqrt{s}=510$ GeV. We use the invariant dijet mass to search for indications of new particles. The p+p dijet results are compatible with string fragmentation models tuned to fit LHC data. The Cu+Au jet results far exceed Feynman scaling limits, and are compatible with models that incorporate string fusion to increase parton energy, acting as a QCD accelerator. The Cu+Au dijet results can be mostly explained by double parton scattering due to a parton flux from multiple p+p interactions with $\sqrt{s}>>\sqrt{s_{NN}}$. Further indication of the increased parton energy is obtained from evidence of single- and double-$\Upsilon$(1S) production in the forward direction in Cu+Au collisions. Finally, we report evidence for the production of a new resonance, reconstructed from its dijet decay. Comment: 8 pages, 8 figures, submitted to Phys. Lett. B |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1909.03124 |
| رقم الأكسشن: | edsarx.1909.03124 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |