Heavy quark energy loss and D-mesons in RHIC and LHC energies

We obtain the radiative energy loss of a heavy quark in a deconfined medium due to radiation of gluons off them using a recently derived generalised gluon emission spectrum. We find that the heavy flavour loses energy almost in a similar fashion like light quarks through this process. With this, we...

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Bibliographic Details
Published in:Physics letters. B 2012-08, Vol.715 (1-3), p.183-189
Main Authors: Abir, Raktim, Jamil, Umme, Mustafa, Munshi G., Srivastava, Dinesh K.
Format: Article
Language:English
Subjects:
Collisions
Decay
Elementary particles
Energy (nuclear)
Exact sciences and technology
Flavor (particle physics)
Gluons
Lead (metal)
Nuclear physics
Physics
Quarks
The physics of elementary particles and fields
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Summary:We obtain the radiative energy loss of a heavy quark in a deconfined medium due to radiation of gluons off them using a recently derived generalised gluon emission spectrum. We find that the heavy flavour loses energy almost in a similar fashion like light quarks through this process. With this, we further analyse the nuclear modification factor for D-meson at LHC and RHIC energies. In particular, the obtained result is found to be in close agreement with the most recent data from ALICE collaboration at 2.76 ATeV Pb–Pb collisions. We also discuss the nuclear modification factor due to the collisional energy loss. Furthermore, the result of non-photonic single electron from the decay of both D- and B-mesons is compared with the RHIC data at 200 AGeV Au–Au collisions, which is also in close agreement.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2012.07.044