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arXiv · 2203.17058

Charm- and Bottom-Quark Production in Au$+$Au Collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV

PHENIX Collaboration·N. J. Abdulameer·U. Acharya·A. Adare·C. Aidala·N. N. Ajitanand·Y. Akiba·M. Alfred·N. Apadula·H. Asano·B. Azmoun·V. Babintsev·M. Bai·N. S. Bandara·B. Bannier·K. N. Barish·S. Bathe·A. Bazilevsky·M. Beaumier·S. Beckman·R. Belmont·A. Berdnikov·Y. Berdnikov·L. Bichon·B. Blankenship·D. S. Blau·J. S. Bok·V. Borisov·K. Boyle·M. L. Brooks·J. Bryslawskyj·V. Bumazhnov·S. Campbell·V. Canoa Roman·C. -H. Chen·M. Chiu·C. Y. Chi·I. J. Choi·J. B. Choi·T. Chujo·Z. Citron·M. Connors·R. Corliss·Y. Corrales Morales·M. Csanád·T. Csörgő·T. W. Danley·A. Datta·M. S. Daugherity·G. David·C. T. Dean·K. DeBlasio·K. Dehmelt·A. Denisov·A. Deshpande·E. J. Desmond·A. Dion·P. B. Diss·J. H. Do·V. Doomra·A. Drees·K. A. Drees·J. M. Durham·A. Durum·A. Enokizono·R. Esha·B. Fadem·W. Fan·N. Feege·D. E. Fields·M. Finger, Jr.·M. Finger·D. Firak·D. Fitzgerald·S. L. Fokin·J. E. Frantz·A. Franz·A. D. Frawley·P. Gallus·C. Gal·P. Garg·H. Ge·M. Giles·F. Giordano·A. Glenn·Y. Goto·N. Grau·S. V. Greene·M. Grosse Perdekamp·T. Gunji·T. Hachiya·J. S. Haggerty·K. I. Hahn·H. Hamagaki·H. F. Hamilton·J. Hanks·S. Y. Han·M. Harvey·S. Hasegawa·T. O. S. Haseler
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Abstract

The invariant yield of electrons from open-heavy-flavor decays for $1<p_T<8$ GeV/$c$ at midrapidity $|y|<0.35$ in Au$+$Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. A displaced-vertex analysis with the PHENIX silicon-vertex detector enables extraction of the fraction of charm and bottom hadron decays and unfolding of the invariant yield of parent charm and bottom hadrons. The nuclear-modification factors $R_{AA}$ for electrons from charm and bottom hadron decays and heavy-flavor hadrons show both a centrality and a quark-mass dependence, indicating suppression in the quark-gluon plasma produced in these collisions that is medium sized and quark-mass dependent.

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PHENIX Collaboration, N. J. Abdulameer, U. Acharya, A. Adare, C. Aidala, N. N. Ajitanand, Y. Akiba, M. Alfred, N. Apadula, H. Asano, B. Azmoun, V. Babintsev, M. Bai, N. S. Bandara, B. Bannier, K. N. Barish, S. Bathe, A. Bazilevsky, M. Beaumier, S. Beckman, R. Belmont, A. Berdnikov, Y. Berdnikov, L. Bichon, B. Blankenship, D. S. Blau, J. S. Bok, V. Borisov, K. Boyle, M. L. Brooks, J. Bryslawskyj, V. Bumazhnov, S. Campbell, V. Canoa Roman, C. -H. Chen, M. Chiu, C. Y. Chi, I. J. Choi, J. B. Choi, T. Chujo, Z. Citron, M. Connors, R. Corliss, Y. Corrales Morales, M. Csanád, T. Csörgő, T. W. Danley, A. Datta, M. S. Daugherity, G. David, C. T. Dean, K. DeBlasio, K. Dehmelt, A. Denisov, A. Deshpande, E. J. Desmond, A. Dion, P. B. Diss, J. H. Do, V. Doomra, A. Drees, K. A. Drees, J. M. Durham, A. Durum, A. Enokizono, R. Esha, B. Fadem, W. Fan, N. Feege, D. E. Fields, M. Finger, Jr., M. Finger, D. Firak, D. Fitzgerald, S. L. Fokin, J. E. Frantz, A. Franz, A. D. Frawley, P. Gallus, C. Gal, P. Garg, H. Ge, M. Giles, F. Giordano, A. Glenn, Y. Goto, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, T. Hachiya, J. S. Haggerty, K. I. Hahn, H. Hamagaki, H. F. Hamilton, J. Hanks, S. Y. Han, M. Harvey, S. Hasegawa, T. O. S. Haseler. 2022-03-31. Charm- and Bottom-Quark Production in Au$+$Au Collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV. https://doi.org/10.1103/physrevc.109.044907

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