First observation of the Charmless Decay B to K pi0pi0 and Study of its Dalitz Plot Structure Page: 84 of 201
201 pagesView a full description of this thesis or dissertation.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
4.1. Particle identifications
4.1 Particle identifications
This section lists the selections applied to variables in the event to reduce misidenti-
fication of the final state particles. The neutral particles are selected by combining
information from a predefined list containing specific ir0 energy and mass criteria
to a tighter set of selections calibrated using signal MC. Charged kaons are selected
by applying one of the BABAR standard particle identification lists. These make
use of neural networks composed from specific discriminating variables to associate
charged tracks to the most likely contributing charged particle.
4.1.1 Neutral selections
The +0 candidates are selected from the standard BABAR Pi0AllLoose list. This list
is a combination of two different +0 lists, PiOLooseMass and MergedPiOLoose. The
PiOLooseMass list is used to select composite , i.e. 7l candidates for which the
pair of photons daughters contribute to one bump each in the EMC (for a complete
description of bumps and energy deposits refer to Section 2.6). The MergedPiOLoose
list is used to select merged 10, i.e. 7r0 candidates for which photon daughters con-
tribute to a single bump in the EMC. To be considered a +0 candidate by the neutral
lists a bump must have a polar angle between 0.42 and 2.4 and have energy greater
than 30 MeV [64]. Each list selects candidates by applying additional sets of cuts
on the photon energy distributions and the +0 candidate mass. The PiOLooseMass
list requires:
o minimum uncalibrated energy of photon needs to be 0.030 GeV,
o maximum LAT (see Eq. 2.2) of photon shower needs to be 0.8,
o minimum ir0 energy of 0.2 GeV,
o a 10 mass between 0.1-0.16 GeV/c2 with an additional mass constrained fit.55
Upcoming Pages
Here’s what’s next.
Search Inside
This document can be searched. Note: Results may vary based on the legibility of text within the document.
Matching Search Results
View two places within this document that match your search.Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Thesis Or Dissertation.
Puccio, Eugenia Maria Teresa Irene & /SLAC, /Warwick U. First observation of the Charmless Decay B to K pi0pi0 and Study of its Dalitz Plot Structure, thesis or dissertation, March 21, 2012; United States. (https://digital.library.unt.edu/ark:/67531/metadc830373/m1/84/?q=%22Irene%22: accessed June 8, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.