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Title: Study of Charged Particle Species Produced in Association with $$\bar{B}$$0, B-, and $$\bar{B}$$$$0\atop{s}$$ Mesons in p$$\bar{p}$$ collisions at √s = 1.96-TeV

Abstract

The authors study the yields of charged kaons, charged pions, and protons produced in association with B mesons produced in proton-antiproton collisions at center of mass energy 1960 GeV using 355 pb-1 of data collected with the CDF detector at the Fermilab Tevatron. This is the first reported measurements of these yields at a hadron collider. The B mesons are reconstructed using their semileptonic decays: B0 → ℓ+D-X, D- → K+π-π-; B0 → ℓ+D*-X, D*- → π-$$\bar{D}$$0,$$\bar{D}$$0 → K+π-; B+ → ℓ+$$\bar{D}$$0X, $$\bar{D}$$0 → K+π-; Bs→ℓ+D$$-\atop{s}$$ X, D$$-\atop{s}$$ → π-Φ,Φ → K+K-. The K, π, and p are identified using the Time of Flight detector (TOF), the CDF spectrometer, and the specific ionization (dE/dx) measured in the central drift chamber (COT). The fraction of charged kaons produced in association with $$\bar{B}$$$$0\atop{s}$$ mesons is found to be larger than the fraction produced in association with the $$\bar{B}$$$$0\atop{s}$$ and B- mesons, as expected from naive models of heavy quark hadronization to mesons. The particle species yields are found to be in qualitative agreement with simulation of B meson production in hadron collisions from the PYTHIA Monte Carlo, although the yield of kaons around $$\bar{B}$$$$0\atop{s}$$ mesons is found to be larger in themore » simulation when compared to the data. These studies are important for understanding methods of identifying the flavor of $$\bar{B}$$$$0\atop{s}$$ mesons in measurement of $$\bar{B}$$$$0\atop{s}$$ flavor oscillations and charge conjugation-parity (CP) violation in $$\bar{B}$$$$0\atop{s}$$ meson decays.« less

Authors:
 [1]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
879107
Report Number(s):
FERMILAB-THESIS-2005-68
TRN: US0700899
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B MESONS; CHARGED PARTICLES; DRIFT CHAMBERS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; HADRONS; IONIZATION; KAONS; MESONS; OSCILLATIONS; PIONS; PRODUCTION; PROTONS; QUARKS; SEMILEPTONIC DECAY; SIMULATION; Experiment-HEP

Citation Formats

Usynin, Denys. Study of Charged Particle Species Produced in Association with $\bar{B}$0, B-, and $\bar{B}$$0\atop{s}$ Mesons in p$\bar{p}$ collisions at √s = 1.96-TeV. United States: N. p., 2005. Web. doi:10.2172/879107.
Usynin, Denys. Study of Charged Particle Species Produced in Association with $\bar{B}$0, B-, and $\bar{B}$$0\atop{s}$ Mesons in p$\bar{p}$ collisions at √s = 1.96-TeV. United States. https://doi.org/10.2172/879107
Usynin, Denys. 2005. "Study of Charged Particle Species Produced in Association with $\bar{B}$0, B-, and $\bar{B}$$0\atop{s}$ Mesons in p$\bar{p}$ collisions at √s = 1.96-TeV". United States. https://doi.org/10.2172/879107. https://www.osti.gov/servlets/purl/879107.
@article{osti_879107,
title = {Study of Charged Particle Species Produced in Association with $\bar{B}$0, B-, and $\bar{B}$$0\atop{s}$ Mesons in p$\bar{p}$ collisions at √s = 1.96-TeV},
author = {Usynin, Denys},
abstractNote = {The authors study the yields of charged kaons, charged pions, and protons produced in association with B mesons produced in proton-antiproton collisions at center of mass energy 1960 GeV using 355 pb-1 of data collected with the CDF detector at the Fermilab Tevatron. This is the first reported measurements of these yields at a hadron collider. The B mesons are reconstructed using their semileptonic decays: B0 → ℓ+D-X, D- → K+π-π-; B0 → ℓ+D*-X, D*- → π-$\bar{D}$0,$\bar{D}$0 → K+π-; B+ → ℓ+$\bar{D}$0X, $\bar{D}$0 → K+π-; Bs→ℓ+D$-\atop{s}$ X, D$-\atop{s}$ → π-Φ,Φ → K+K-. The K, π, and p are identified using the Time of Flight detector (TOF), the CDF spectrometer, and the specific ionization (dE/dx) measured in the central drift chamber (COT). The fraction of charged kaons produced in association with $\bar{B}$$0\atop{s}$ mesons is found to be larger than the fraction produced in association with the $\bar{B}$$0\atop{s}$ and B- mesons, as expected from naive models of heavy quark hadronization to mesons. The particle species yields are found to be in qualitative agreement with simulation of B meson production in hadron collisions from the PYTHIA Monte Carlo, although the yield of kaons around $\bar{B}$$0\atop{s}$ mesons is found to be larger in the simulation when compared to the data. These studies are important for understanding methods of identifying the flavor of $\bar{B}$$0\atop{s}$ mesons in measurement of $\bar{B}$$0\atop{s}$ flavor oscillations and charge conjugation-parity (CP) violation in $\bar{B}$$0\atop{s}$ meson decays.},
doi = {10.2172/879107},
url = {https://www.osti.gov/biblio/879107}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2005},
month = {Sat Jan 01 00:00:00 EST 2005}
}

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