Light Kaluza Klein States in Randall-Sundrum Models with Custodial SU(2) Page: 1 of 36
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
ANL-HEP-PR-06-53
CU-TP-1152
EFI-06-08
FERMILAB-PUB-06/234-T
hep-ph/0607106
o Light Kaluza-Klein States in Randall-Sundrum Models
with Custodial SU(2)
en
Marcela Carenaa, Eduardo Pont6nb,
Jose Santiagoa, and C.E.M. Wagnerd
O
aFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USA
O bDepartment of Physics, Columbia University,
538 W. 120th St, New York, NY 10027, USA
I CHEP Division, Argonne National Laboratory, 9700 Cass Ave., Argonne, IL 60439, USA
) dEnrico Fermi Institute and Kavli Institute for Cosmological Physics,
Univ. of Chicago, 5640 Ellis Ave., Chicago, IL 60637, USA
Abstract
We consider Randall-Sundrum scenarios based on SU(2)L x SU(2)R and a discrete
parity exchanging L with R. The custodial and parity symmetries can be used to make
the tree level contribution to the T parameter and the anomalous couplings of the bottom
quark to the Z very small. We show that the resulting quantum numbers typically induce a
negative T parameter at one loop that, together with the positive value of the S parameter,
restrict considerably these models. There are nevertheless regions of parameter space that
successfully reproduce the fit to electroweak precision observables with light Kaluza-Klein
excitations accessible at colliders. We consider models of gauge-Higgs unification that
implement the custodial and parity symmetries and find that the electroweak data singles
out a very well defined region in parameter space. In this region one typically finds light
gauge boson Kaluza-Klein excitations as well as light SU(2)L singlet, and sometimes also
doublet, fermionic states, that mix with the top quark, and that may yield interesting
signatures at future colliders.
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
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 Article.
Carena, Marcela; Ponton, Eduardo; Santiago, Jose & Wagner, Carlos E. M. Light Kaluza Klein States in Randall-Sundrum Models with Custodial SU(2), article, July 1, 2006; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc880041/m1/1/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.