Speaker
Description
We compute the QGP suppression of $\Upsilon(1s)$, $\Upsilon(2s)$, $\Upsilon(3s)$, $\chi_{b1}$, and $\chi_{b2}$ states in \mbox{$\sqrt{s_{NN}}=2.76$ TeV} Pb-Pb collisions. Using the suppression of each of these states, we estimate the inclusive $R_{AA}$ for the $\Upsilon(1s)$ and $\Upsilon(2s)$ states as a function of $N_{\rm part}$, $y$, and $p_T$ including the effect of excited state feed down. We find that our model provides a reasonable description of preliminary CMS results for the $N_{\rm part}$-, $y$-, and $p_T$-dependence of $R_{AA}$ for both the $\Upsilon(1s)$ and $\Upsilon(2s)$. Comparing to our previous model predictions, we find a flatter rapidity dependence, thereby reducing some of the tension between our model and ALICE forward-rapidity results for $\Upsilon(1s)$ suppression.
Literature:
1) B. Krouppa, R. Ryblewski, M. Strickland, Phys.Rev. C92 (2015) no.6, 061901
2) M. Strickland, Phys.Rev.Lett.107,132301 (2011)
3) M. Strickland, D. Bazow, Nucl.Phys.A879, 25 (2012)
