BABAR Publications

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PLOT-0015 Branching fraction for B->rho l nu; plots for Winter 2002 conferences

Doc Type

Public Plots or Figures

Record Created

May 13, 2002

Comments

The CKM matrix element |Vub| is measured with semileptonic exclusive B meson decays using Run I data corresponding to approximately 22 million B meson decays. We study the five modes B -> H_u e nu, where H_u = rho0, rho+-, pi0, pi+- or omega.

Related Docs

Conference Presentations/Proceedings TALK-02/014 Results on hadronic and semileptonic B decays from BABAR
Conference Presentations/Proceedings TALK-02/022 Leptonic and semileptonic B decays in BABAR
Conference Submissions CONF-02/030 Measurement of the CKM matrix element |V_ub| with charmless exclusive semileptonic B meson decays at BABAR

Revisions and Files

1 revised May 13, 2002

File Date Thumbnails	File Name	File Type	File Format	File Size (Kb)	Comments
22-MAY-2002	brho.gif	Figure or plot	gif	356.83	Our preliminary result for the branching ratio for several form factor models and for the average of these models.
22-MAY-2002	deltae hi.gif	Figure or plot	gif	200.85	Delta_E projection of the fit result for Elept>2.35 GeV. Delta E is the reconstructed B meson energy minus the expected energy (Ebeam*).
22-MAY-2002	deltae lo.gif	Figure or plot	gif	200.85	Delta_E projection of the fit result for 2.0
22-MAY-2002	ecmlept hi.gif	Figure or plot	gif	200.85	The lepton energy spectrum for Elept>2.35 GeV.
22-MAY-2002	ecmlept hi signal.gif	Figure or plot	gif	200.85	The lepton energy spectrum for Elept>2.35 GeV, after subtraction of all backgrounds.
22-MAY-2002	ecmlept lohi.gif	Figure or plot	gif	200.85	The lepton energy spectrum for Elept>2.35 GeV.
22-MAY-2002	mhad hi.gif	Figure or plot	gif	200.85	Mhad projection of the fit result for Elept > 2.35 GeV. Mhad is the invariant pi pi mass of the decaying rho meson.
22-MAY-2002	mhad lo.gif	Figure or plot	gif	200.85	Mhad projection of the fit result for 2.0 < Elept < 2.35 GeV. Mhad is the invariant pi pi mass of the decaying rho meson.
22-MAY-2002	pcmlept.gif	Figure or plot	gif	356.83	This plots shows the lepton spectra on generator level (EvtGen, ISGW2 model). LEGEND: blue = B0 -> Xc l nu pink = B0 -> Xu l nu green = B0 -> pi+- l nu red = B0 -> rho+- l nu
22-MAY-2002	q2 hi.gif	Figure or plot	gif	200.85	The q2 spectrum for Elept>2.35 GeV. q2 is the invariant mass of the virtual W boson.
22-MAY-2002	q2 hi signal.gif	Figure or plot	gif	200.85	The q2 spectrum for Elept>2.35 GeV, after subtraction of all backgrounds. q2 is the invariant mass of the virtual W boson.
22-MAY-2002	vub.gif	Figure or plot	gif	356.83	Our preliminary result for \|Vub\| for several form factor models and for the average of these models.
22-MAY-2002	vubcomp.gif	Figure or plot	gif	7.76	Comparison of \|Vub\| results of different experiments. Status as of February 2002.

Submitted To	2002 Rencontres de Physique de la Vallee d'Aoste