Measurement of prompt hadron production ratios in pp collisions at $\sqrt{s} = 0.9\mbox{ and }7~\mathrm{TeV}$
Copyright policy )Measurement of prompt hadron production ratios in pp collisions at $\sqrt{s} = 0.9\mbox{ and }7~\mathrm{TeV}$
The charged-particle production ratios $\bar{p}/p$, $K^-/K^+$, $��^-/��^+$, $(p + \bar{p})/(��^+ + ��^-)$, $(K^+ + K^-)/(��^+ + ��^-)$ and $(p + \bar{p})/(K^+ + K^-)$ are measured with the LHCb detector using $0.3 {\rm nb^{-1}}$ of $pp$ collisions delivered by the LHC at $\sqrt{s} = 0.9$ TeV and $1.8 {\rm nb^{-1}}$ at $\sqrt{s} = 7$ TeV. The measurements are performed as a function of transverse momentum $p_{\rm T}$ and pseudorapidity $��$. The production ratios are compared to the predictions of several Monte Carlo generator settings, none of which are able to describe adequately all observables. The ratio $\bar{p}/p$ is also considered as a function of rapidity loss, $��y \equiv y_{\rm beam} - y$, and is used to constrain models of baryon transport.
Incorrect entries in Table 2 corrected. No consequences for rest of paper
- University of Salford United Kingdom
- Novosibirsk State University Russian Federation
- Federal University of Rio de Janeiro Brazil
- University of Zurich Switzerland
- Université Savoie Mont Blanc France
Astrofísica, Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Teoria quàntica de camps, Physics and Astronomy (miscellaneous), 530 Physics, Astronomy, Particles & Fields, Nuclear physics, FOS: Physical sciences, Physics Institute, Hadrons, Astrophysics, 530, Partícules (Física nuclear), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 539, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], TOOL, Gran col·lisionador d'hadrons (França i Suïssa), QA, Engineering (miscellaneous), QC, HIGH-ENERGIES, Science & Technology, hep-ex, Physics, Nuclear energy, Quantum field theory, STRING MODEL, Col·lisions (Física nuclear), Physical Sciences, Astronomia, 539 - Constitució física de la matèria, Energia nuclear, [PHYS.HEXP] Physics/High Energy Physics - Experiment, Física nuclear, LHC, DECAY, TOTAL CROSS-SECTIONS, Particle Physics - Experiment
Astrofísica, Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE, Teoria quàntica de camps, Physics and Astronomy (miscellaneous), 530 Physics, Astronomy, Particles & Fields, Nuclear physics, FOS: Physical sciences, Physics Institute, Hadrons, Astrophysics, 530, Partícules (Física nuclear), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 539, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], TOOL, Gran col·lisionador d'hadrons (França i Suïssa), QA, Engineering (miscellaneous), QC, HIGH-ENERGIES, Science & Technology, hep-ex, Physics, Nuclear energy, Quantum field theory, STRING MODEL, Col·lisions (Física nuclear), Physical Sciences, Astronomia, 539 - Constitució física de la matèria, Energia nuclear, [PHYS.HEXP] Physics/High Energy Physics - Experiment, Física nuclear, LHC, DECAY, TOTAL CROSS-SECTIONS, Particle Physics - Experiment
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