Searching for Higgs Bosons in Tau Final States at Dzero
Lead Research Organisation:
University of Manchester
Department Name: Physics and Astronomy
Abstract
The Dzero Experiment at the Tevatron collider near Chicago searches for Higgs bosons produced in the collisions of protons and anti-protons. In this proposal we want to use tau leptons as an efficient tool to identify events with Higgs boson production and to separate them from the copiously produced background. In the Standard Model of Particle Physics, Higgs bosons can be produced together with a W or Z boson. Whereas the Higgs boson will decay into a pair of b quarks, the W can decay into a tau and a neutrino and the Z into two tau leptons. This is only one of several possible production processes. The expected number of Standard Model Higgs bosons in the data, however, is so small that this process plays an important role in increasing the sensitivity for a signal. In Supersymmetry there are several Higgs bosons. In the so-called Minimal Supersymmetric Standard Model (MSSM) there are five Higgs bosons, two of them charged and three neutral. About one in ten MSSM Higgs bosons decays into a pair of tau leptons. Searching for these events can help to discover Supersymmetry. In any case, it will significantly constrain the properties of the model. The other Tevatron experiment, CDF, has recently presented a deviation in its data which could be interpreted as a potential signal of a MSSM Higgs boson. The Dzero data could not confirm this signal, but also not completely exclude it. It is therefore important that we continue this work in the future.
Publications
Aaltonen T
(2010)
Combination of Tevatron searches for the standard model Higgs boson in the W+W- decay mode.
in Physical review letters
Abazov V
(2010)
b-Jet identification in the D0 experiment
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abazov V
(2009)
Measurement of the top quark mass in final states with two leptons
in Physical Review D
Abazov V
(2010)
Dependence of the t t ¯ production cross section on the transverse momentum of the top quark
in Physics Letters B
Abazov V
(2009)
Direct Measurement of the Mass Difference between Top and Antitop Quarks
in Physical Review Letters
Abazov V
(2010)
Search for the rare decay B s 0 ? µ + µ -
in Physics Letters B
Abazov V
(2010)
Measurement of the t-channel single top quark production cross section
in Physics Letters B
Abazov V
(2010)
Double parton interactions in ? + 3 jet events in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2010)
Measurement of t t ¯ production in the t + jets topology using p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2011)
Measurement of the top quark pair production cross section in the lepton + jets channel in proton-antiproton collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2011)
Measurement of the W boson helicity in top quark decays using 5.4 fb - 1 of p p ¯ collision data
in Physical Review D
Abazov V
(2010)
Search for Diphoton Events with Large Missing Transverse Energy in 6.3 fb - 1 of p p ¯ Collisions at s = 1.96 TeV
in Physical Review Letters
Abazov V
(2011)
Measurement of the ratio of inclusive cross sections s ( p p ¯ ? Z + b - quark jet ) / s ( p p ¯ ? Z + jet ) at s = 1.96 TeV
in Physical Review D
Abazov V
(2011)
Measurement of three-jet differential cross sections d s 3 jet / d M 3 jet in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2009)
Search for charged Higgs bosons in top quark decays
in Physics Letters B
Abazov V
(2009)
Search for charged Higgs bosons in decays of top quarks
in Physical Review D
Abazov V
(2010)
Measurement of direct photon pair production cross sections in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2011)
Search for pair production of the scalar top quark in the electron + muon final state
in Physics Letters B
Abazov V
(2011)
Search for flavor changing neutral currents in decays of top quarks
in Physics Letters B
Abazov V
(2009)
Combination of t t ¯ cross section measurements and constraints on the mass of the top quark and its decays into charged Higgs bosons
in Physical Review D
Abazov V
(2010)
Search for C P violation in B s 0 ? µ + D s - X decays in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2011)
Search for W ' ? t b resonances with left- and right-handed couplings to fermions
in Physics Letters B
Abazov V
(2010)
Evidence for an anomalous like-sign dimuon charge asymmetry
in Physical Review D
Abazov V
(2011)
Measurement of spin correlation in t t ¯ production using dilepton final states
in Physics Letters B
Abazov V
(2010)
Search for single top quarks in the tau + jets channel using 4.8 fb-1 of p p ¯ collision data
in Physics Letters B
Abazov V
(2009)
Search for pair production of first-generation leptoquarks in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2010)
Measurement of the normalized Z / ? * ? µ + µ - transverse momentum distribution in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2011)
High mass exclusive diffractive dijet production in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2011)
Measurement of color flow in t t ¯ events from p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2009)
Search for squark production in events with jets, hadronically decaying tau leptons and missing transverse energy at s = 1.96 TeV
in Physics Letters B
Abazov V
(2009)
Determination of the strong coupling constant from the inclusive jet cross section in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2010)
Measurement of Z / ? * + jet + X angular distributions in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2011)
Measurement of the WZ ? l ? l l cross section and limits on anomalous triple gauge couplings in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2010)
Measurement of the dijet invariant mass cross section in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2009)
Measurement of trilinear gauge boson couplings from W W + W Z ? l ? j j events in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2011)
Search for neutral Higgs bosons in the multi-b-jet topology in 5.2 fb - 1 of p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2011)
Azimuthal decorrelations and multiple parton interactions in ? + 2 jet and ? + 3 jet events in p p ¯ collisions at s = 1.96 TeV
in Physical Review D
Abazov V
(2009)
Measurements of differential cross sections of Z / ? * + jets + X events in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2009)
A novel method for modeling the recoil in W boson events at hadron colliders
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abazov V
(2010)
Measurement of the t t ¯ cross section using high-multiplicity jet events
in Physical Review D
Abazov V
(2010)
Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of p p ¯ collisions
in Physics Letters B
Abazov V
(2010)
Search for scalar bottom quarks and third-generation leptoquarks in p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V
(2011)
Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of p p ¯ collisions at s = 1.96 TeV
in Physics Letters B
Abazov V. M.
(2011)
Search for
W
H associated production in 5.3 fb
-1 of
p(
p)over-bar collisions at the Fermilab Tevatron
in PHYSICS LETTERS B
Abazov VM
(2010)
Search for the standard model higgs Boson in the ZH-->nunubb channel in 5.2 fb{-1} of pp collisions at sqrt[s]=1.96 TeV.
in Physical review letters
Abazov VM
(2009)
Measurement of dijet angular distributions at square root(s) = 1.96 TeV and searches for quark compositeness and extra spatial dimensions.
in Physical review letters
Abazov VM
(2011)
Determination of the width of the top quark.
in Physical review letters
Abazov VM
(2009)
Search for the standard model Higgs boson in tau final states.
in Physical review letters
Abazov VM
(2010)
Search for ZH ? l+ l- bb production in 4.2 fb(-1) of pp collisions at sqrt[s] =1 .96 TeV.
in Physical review letters
Description | Fermilab International Fellowship |
Organisation | Fermilab - Fermi National Accelerator Laboratory |
Department | Particle Physics Division |
Country | United States |
Sector | Public |
PI Contribution | We collaborate on the D0 Experiment at Fermilab. |
Collaborator Contribution | Collaboration on D0 Experiment |
Impact | see list of publications attached |
Start Year | 2009 |
Description | Fermilab Today, Press |
Form Of Engagement Activity | A press release, press conference or response to a media enquiry/interview |
Part Of Official Scheme? | No |
Primary Audience | Public/other audiences |
Results and Impact | - Maiko Takahashi was featured several times on Fermilab Today, an outreach webpage - Higgs search results from D0 were featured in media (e.g. BBC) - Significant feedback from public regarding the Tevatron Higgs searches, including the discussion about a run extension of the Tevatron. |
Year(s) Of Engagement Activity | 2009,2010 |