Search for the strongest electromagnetic field in quark-gluon plasma via measureme...
Study of heavy-flavor production in hadrons collisions at LHC
Feasibility studies of event-by-event direct photon measurements in Pb-Pb collisio...
| Full text | |
| Author(s): |
Bernardes, Cesar
;
CMS Collaboration
Total Authors: 2
|
| Document type: | Journal article |
| Source: | Nuclear Physics A; v. 1005, p. 4-pg., 2021-01-01. |
| Abstract | |
In ultrarelativistic heavy-ion collisions, a very strong (on the order of 10(16) T) and transient (lifetime on the order of 10(-1) fm/c) electromagnetic (EM) field is expected to be generated inside the medium formed in the collision. This EM field, generated by the collision participants and spectators, is predicted to produce a difference in the v(n) harmonics for positive-and negative-charged particles, with the magnetic field mainly responsible for a splitting in rapidity-odd directed flow (v(1)), and the Coulomb electric field leading to a charge-dependent splitting in the v(2) and average p(T) values of emitted particles. Due to the large mass, charm quarks are expected to be created very early in the collision, and thus have more chance of interacting with this strong EM field than light flavor hadrons. In this contribution, measurements of D-0 ((u) over barc) and (D) over bar (0) (u (c) over bar) mesons flow harmonics (v(2) and v(3)) are presented as functions of rapidity (y), transverse momentum, and collision centrality for PbPb collisions at 5.02 TeV, using the large data samples collected by the CMS experiment during the LHC Run 2. The wide rapidity coverage (vertical bar y vertical bar < 2) of these new charm mesons measurements allow for a better understanding of the 3-dimensional evolution of the medium formed in heavy-ion collisions. (AU) | |
| FAPESP's process: | 18/26025-3 - Search for the strongest electromagnetic field in quark-gluon plasma via measurement of directed and elliptic flow for charm mesons in PbPb collisions |
| Grantee: | César Augusto Bernardes |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 13/01907-0 - São Paulo Research and Analysis Center |
| Grantee: | Sergio Ferraz Novaes |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/07847-4 - Detecting high density matter in the LHC |
| Grantee: | César Augusto Bernardes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |