Contribution
Search for nuclear modifications of B+ meson production in pPb collisions at $\sqrt{s_{NN}} = 8.16~\mathrm{TeV}$
Speakers
- Mr. Camilo TORRES CASTAÑO
Primary authors
- Mr. Camilo TORRES CASTAÑO (Estudiante Maestría en Física Apliacada, BUAP)
Co-authors
- Jhovanny MEJIA (Cinvestav-IPN)
- Dr. irais BAUTISTA (BUAP)
Files
Content
We present the measurement of the $\mathrm{B}^{+}$ meson production cross section as a function of transverse momentum and, for the first time, in charged particle multiplicity ranges using the CMS detector during $2016$ data collection that corresponds to an integrated luminosity of $175~\mathrm{nb^{-1}}$ , in proton-lead collisions at a per nucleon center of mass energy of $8.16~\mathrm{TeV}$. The results are in agreement with the fixed-order next-to-leading logarithmic calculations. Nuclear medium effects on $\mathrm{B}^{+}$ meson production are studied using the binary-collision scaled cross section ratio between events of different multiplicities from proton-lead collisions. The scaling factors in the ratio are determined using a novel approach based on the $Z\longrightarrow \mu^{-}\mu^{+}$ cross sections measured in the same events. The scaled ratio for $\mathrm{B}^{+}$ is consistent with unity for all event multiplicities, putting stringent constraints on nuclear modification for heavy flavor.
Summary
We present the measurement of the $\mathrm{B}^{+}$ meson production cross section as a function of transverse momentum and, for the first time, in charged particle multiplicity ranges using the CMS detector during $2016$ data collection that corresponds to an integrated luminosity of $175~\mathrm{nb^{-1}}$ , in proton-lead collisions at a per nucleon center of mass energy of $8.16~\mathrm{TeV}$. The results are in agreement with the fixed-order next-to-leading logarithmic calculations. Nuclear medium effects on $\mathrm{B}^{+}$ meson production are studied using the binary-collision scaled cross section ratio between events of different multiplicities from proton-lead collisions. The scaling factors in the ratio are determined using a novel approach based on the $Z\longrightarrow \mu^{-}\mu^{+}$ cross sections measured in the same events. The scaled ratio for $\mathrm{B}^{+}$ is consistent with unity for all event multiplicities, putting stringent constraints on nuclear modification for heavy flavor.