| Title: |
Production of π0 and η mesons in Cu+Au collisions at sNN=200GeV |
| Authors: |
Aidala, C; Ajitanand, NN; Akiba, Y; Akimoto, R; Alexander, J; Alfred, M; Aoki, K; Apadula, N; Asano, H; Atomssa, ET; Awes, TC; Azmoun, B; Babintsev, V; Bagoly, A; Bai, M; Bai, X; Bannier, B; Barish, KN; Bathe, S; Baublis, V; Baumann, C; Baumgart, S; Bazilevsky, A; Beaumier, M; Belmont, R; Berdnikov, A; Berdnikov, Y; Black, D; Blau, DS; Boer, M; Bok, JS; Boyle, K; Brooks, ML; Bryslawskyj, J; Buesching, H; Bumazhnov, V; Butsyk, S; Campbell, S; Roman, V Canoa; Chen, C-H; Y., C; Chiu, M; Choi, IJ; Choi, JB; Choi, S; Christiansen, P; Chujo, T; Cianciolo, V; Cole, BA; Connors, M; Cronin, N; Crossette, N; Csanád, M; Csörgő, T; Danley, TW; Datta, A; Daugherity, MS; David, G; DeBlasio, K; Dehmelt, K; Denisov, A; Deshpande, A; Desmond, EJ; Ding, L; H., J; D'Orazio, L; Drapier, O; Drees, A; Drees, KA; Durham, JM; Durum, A; Engelmore, T; Enokizono, A; Esumi, S; Eyser, KO; Fadem, B; Fan, W; Feege, N; Fields, DE; Finger, M; Fleuret, F; Fokin, SL; Frantz, JE; Franz, A; Frawley, AD; Fukao, Y; Fusayasu, T; Gainey, K; Gal, C; Gallus, P; Garg, P; Garishvili, A; Garishvili, I; Ge, H; Giordano, F; Glenn, A; Gong, X; Gonin, M; Goto, Y |
| Source: |
Physical Review C, vol 98, iss 5 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2018 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5106 Nuclear and Plasma Physics (for-2020); 5107 Particle and High Energy Physics (for-2020); 51 Physical Sciences (for-2020); hep-ex |
| Description: |
Production of π0 and η mesons has been measured at midrapidity in Cu+Au collisions at sNN=200GeV. Measurements were performed in π0(η)→γγ decay channel in the 1(2)-20GeV/c transverse momentum range. A strong suppression is observed for π0 and η meson production at high transverse momentum in central Cu+Au collisions relative to the p+p results scaled by the number of nucleon-nucleon collisions. In central collisions the suppression is similar to Au+Au with comparable nuclear overlap. The η/π0 ratio measured as a function of transverse momentum is consistent with mT-scaling parametrization down to pT=2GeV/c, its asymptotic value is constant and consistent with Au+Au and p+p and does not show any significant dependence on collision centrality. Similar results were obtained in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions as well as in e+e− collisions in a range of collision energies sNN=3−1800 GeV. This suggests that the quark-gluon-plasma medium produced in Cu+Cu collisions either does not affect the jet fragmentation into light mesons or it affects the π0 and η the same way. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt098632b4; https://escholarship.org/uc/item/098632b4; https://escholarship.org/content/qt098632b4/qt098632b4.pdf |
| DOI: |
10.1103/physrevc.98.054903 |
| Availability: |
https://escholarship.org/uc/item/098632b4; https://escholarship.org/content/qt098632b4/qt098632b4.pdf; https://doi.org/10.1103/physrevc.98.054903 |
| Rights: |
public |
| Accession Number: |
edsbas.EF8686D8 |
| Database: |
BASE |