Nuclear Modification Factor RpA of b jets in pPb collisions
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Abstract:
We present a measurement of the nuclear modification factor of b jets in proton-lead collisions from CMS. Jets from b-quark fragmentations are found by exploiting the long lifetime of the b-quark through tagging methods using distributions of the secondary vertex displacement. From these, b-jet cross-sections are calculated and compared to a pp cross-section obtained from a PYTHIA simulation. The is consistent with unity within systematic uncertainties and may show slight enhancement due to cold nuclear matter effects for a wide range in pseudorapidity. These effects are qualitatively consistent with the observed value for the inclusive jet . We use 35 nb of proton-lead data collected during the 2013 heavy-ion run at the LHC.Note:
- Preliminary results
- Data
- jet: bottom
- nuclear matter: effect
- bottom: particle identification
- track data analysis
- vertex: secondary
- PYTHIA
- p nucleus: inclusive reaction
- CERN LHC Coll
- heavy ion: scattering
References(26)
Figures(8)
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