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Title: Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in p anti-p Collisions at s**(1/2) = 1.96-TeV

Abstract

Models of Maximal Flavor Violation (MxFV) in elementary particle physics may contain at least one new scalar SU(2) doublet field {Phi}{sub FV} = ({eta}{sup 0},{eta}{sup +}) that couples the first and third generation quarks (q{sub 1}; q{sub 3}) via a Lagrangian term L{sub FV} = {zeta}{sub 13}{Phi}{sub FV}q{sub 1}q{sub 3}. These models have a distinctive signature of same-charge top-quark pairs and evade flavor-changing limits from meson mixing measurements. Data corresponding to 2 fb{sup -1} collected by the CDF II detector in p{bar p} collisions at {radical}s = 1.96 TeV are analyzed for evidence of the MxFV signature. For a neutral scalar {eta}{sup 0} with m{sub {eta}{sup 0}} = 200 GeV/c{sup 2} and coupling {zeta}{sub 13} = 1, {approx} 11 signal events are expected over a background of 2.1 {+-} 1.8 events. Three events are observed in the data, consistent with background expectations, and limits are set on the coupling {zeta}{sub 13} for m{sub {eta}{sup 0}} = 180-300 GeV/c{sup 2}.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
944763
Report Number(s):
FERMILAB-PUB-08-420-E
arXiv eprint number arXiv:0809.4903; TRN: US0900618
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELEMENTARY PARTICLES; FERMILAB COLLIDER DETECTOR; LAGRANGIAN FUNCTION; LEPTONS; MESONS; PHYSICS; QUARKS; SCALARS; Experiment-HEP

Citation Formats

Aaltonen, T, /Helsinki Inst. of Phys., Adelman, J, /Chicago U., EFI, Akimoto, T, /Tsukuba U., Albrow, Michael G, /Fermilab, Alvarez Gonzalez, B, /CSIC, Catalunya, Amerio, S, /Padua U. /INFN, Padua, Amidei, Dante E, /Michigan U., Anastassov, A, /Rutgers U., Piscataway, Annovi, Alberto, /Frascati, Antos, J, /Comenius U., Aoki, M, and /Illinois U., Urbana /Fermilab. Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in p anti-p Collisions at s**(1/2) = 1.96-TeV. United States: N. p., 2008. Web.
Aaltonen, T, /Helsinki Inst. of Phys., Adelman, J, /Chicago U., EFI, Akimoto, T, /Tsukuba U., Albrow, Michael G, /Fermilab, Alvarez Gonzalez, B, /CSIC, Catalunya, Amerio, S, /Padua U. /INFN, Padua, Amidei, Dante E, /Michigan U., Anastassov, A, /Rutgers U., Piscataway, Annovi, Alberto, /Frascati, Antos, J, /Comenius U., Aoki, M, & /Illinois U., Urbana /Fermilab. Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in p anti-p Collisions at s**(1/2) = 1.96-TeV. United States.
Aaltonen, T, /Helsinki Inst. of Phys., Adelman, J, /Chicago U., EFI, Akimoto, T, /Tsukuba U., Albrow, Michael G, /Fermilab, Alvarez Gonzalez, B, /CSIC, Catalunya, Amerio, S, /Padua U. /INFN, Padua, Amidei, Dante E, /Michigan U., Anastassov, A, /Rutgers U., Piscataway, Annovi, Alberto, /Frascati, Antos, J, /Comenius U., Aoki, M, and /Illinois U., Urbana /Fermilab. 2008. "Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in p anti-p Collisions at s**(1/2) = 1.96-TeV". United States. https://www.osti.gov/servlets/purl/944763.
@article{osti_944763,
title = {Search for Maximal Flavor Violating Scalars in Same-Charge Lepton Pairs in p anti-p Collisions at s**(1/2) = 1.96-TeV},
author = {Aaltonen, T and /Helsinki Inst. of Phys. and Adelman, J and /Chicago U., EFI and Akimoto, T and /Tsukuba U. and Albrow, Michael G and /Fermilab and Alvarez Gonzalez, B and /CSIC, Catalunya and Amerio, S and /Padua U. /INFN, Padua and Amidei, Dante E and /Michigan U. and Anastassov, A and /Rutgers U., Piscataway and Annovi, Alberto and /Frascati and Antos, J and /Comenius U. and Aoki, M and /Illinois U., Urbana /Fermilab},
abstractNote = {Models of Maximal Flavor Violation (MxFV) in elementary particle physics may contain at least one new scalar SU(2) doublet field {Phi}{sub FV} = ({eta}{sup 0},{eta}{sup +}) that couples the first and third generation quarks (q{sub 1}; q{sub 3}) via a Lagrangian term L{sub FV} = {zeta}{sub 13}{Phi}{sub FV}q{sub 1}q{sub 3}. These models have a distinctive signature of same-charge top-quark pairs and evade flavor-changing limits from meson mixing measurements. Data corresponding to 2 fb{sup -1} collected by the CDF II detector in p{bar p} collisions at {radical}s = 1.96 TeV are analyzed for evidence of the MxFV signature. For a neutral scalar {eta}{sup 0} with m{sub {eta}{sup 0}} = 200 GeV/c{sup 2} and coupling {zeta}{sub 13} = 1, {approx} 11 signal events are expected over a background of 2.1 {+-} 1.8 events. Three events are observed in the data, consistent with background expectations, and limits are set on the coupling {zeta}{sub 13} for m{sub {eta}{sup 0}} = 180-300 GeV/c{sup 2}.},
doi = {},
url = {https://www.osti.gov/biblio/944763}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2008},
month = {Mon Sep 01 00:00:00 EDT 2008}
}