Signals from flavor changing scalar interactions in extended models

PDF Version Also Available for Download.

Description

If on the one hand many predictions of the Standard Model seem to be in remarkable agreement with experiments, on the other hand the full consistency of the model needs still to be proved. In particular, given our present ignorance of the Higgs sector of the theory, extensions of the Standard Model scalar sector are worth considering. The simplest extension of adding one extra SU(2) doublet of scalar fields, i.e. the Two Higgs Doublet Model, generally introduces Flavor Changing Scalar Neutral Currents. The severe constraints imposed by the low energy physics of K and B mesons (K{sup 0} {minus} {bar ... continued below

Physical Description

3 p.

Creation Information

Reina, L. January 19, 1996.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Author

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

If on the one hand many predictions of the Standard Model seem to be in remarkable agreement with experiments, on the other hand the full consistency of the model needs still to be proved. In particular, given our present ignorance of the Higgs sector of the theory, extensions of the Standard Model scalar sector are worth considering. The simplest extension of adding one extra SU(2) doublet of scalar fields, i.e. the Two Higgs Doublet Model, generally introduces Flavor Changing Scalar Neutral Currents. The severe constraints imposed by the low energy physics of K and B mesons (K{sup 0} {minus} {bar K}{sup 0} and B{sup 0} {minus} {bar B}{sup 0} mixing in particular) have motivated the introduction of an unnatural discrete symmetry to avoid flavor changing scalar neutral currents. This assumption may be dropped in favor of a more natural one, which takes any flavor changing coupling to be proportional to the mass of the coupled quarks. The basic idea is that a natural hierarchy is provided by the observed fermion masses and this may be transferred to the couplings between fermions and scalar fields, even when they are not the ones directly involved in the mass generation mechanism. This report presents a Yukawa lagrangian that incorporates this assumption and describes experimental consequences, involving production of top and charm quark pairs, that would serve to test it. 9 refs., 2 figs.

Physical Description

3 p.

Notes

INIS; OSTI as DE96006777

Source

  • HEP 95: international Europhysics conference on high-energy physics, Brussels (Belgium), 27 Jul - 2 Aug 1995

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Other: DE96006777
  • Report No.: BNL--62677
  • Report No.: CONF-950705--43
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 203416
  • Archival Resource Key: ark:/67531/metadc668824

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • January 19, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

Description Last Updated

  • Dec. 3, 2015, 8:06 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 2

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Reina, L. Signals from flavor changing scalar interactions in extended models, article, January 19, 1996; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc668824/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.