Search for new physics in D{+-} {r_arrow} K{sub s}X{+-} and D{+-} {r_arrow} K{sub s}K{sub s}K{+-}.

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Direct CP violation beyond the standard model can be produced in charged D decays to final states with a K{sub S} by small new physics contributions to the transitions D{sup +} {r_arrow} K{sup 0}X{sup +}, where X{sup +} denotes any positively charged hadronic state or transitions D{sup +} {r_arrow} K{sup 0}{bar K}{sup 0}K{sup (*)+}, denotes any positive strange state. These transitions are doubly-Cabibbo suppressed and color suppressed in the standard model and branching ratios are experimentally observed to be suppressed by two orders of magnitude relative to the allowed D{sup +} {r_arrow} {bar K}{sup 0}X{sup +} or D{sup +} {r_arrow} ... continued below

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11 p.

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Lipkin, H. J. November 9, 1998.

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Description

Direct CP violation beyond the standard model can be produced in charged D decays to final states with a K{sub S} by small new physics contributions to the transitions D{sup +} {r_arrow} K{sup 0}X{sup +}, where X{sup +} denotes any positively charged hadronic state or transitions D{sup +} {r_arrow} K{sup 0}{bar K}{sup 0}K{sup (*)+}, denotes any positive strange state. These transitions are doubly-Cabibbo suppressed and color suppressed in the standard model and branching ratios are experimentally observed to be suppressed by two orders of magnitude relative to the allowed D{sup +} {r_arrow} {bar K}{sup 0}X{sup +} or D{sup +} {r_arrow} {bar K}{sup 0}{bar K}{sup 0}K{sup (*)+}, branching ratio. An even smaller new physics contribution might produce an observable CP asymmetry in D{sup {+-}} {r_arrow} K{sub S}X{sup {+-}} or D{sup {+-}} {r_arrow} K{sub S}K{sub S}K{sup (*){+-}} decays. Since such asymmetries are easily checked in the early stages of any charm production experiment, it seems worth while to check them before the opportunity is lost in later stages of the analysis, even if no theoretical model predicts such an asymmetry.

Physical Description

11 p.

Notes

INIS; OSTI as DE00011096

Medium: P; Size: 11 pages

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  • Workshop on Heavy Quarks at Fixed Target (HQ'98), Batavia, IL (US), 10/10/1998--10/12/1998

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  • Report No.: ANL-HEP-CP-98-122
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11096
  • Archival Resource Key: ark:/67531/metadc625679

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  • November 9, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 7:37 p.m.

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Lipkin, H. J. Search for new physics in D{+-} {r_arrow} K{sub s}X{+-} and D{+-} {r_arrow} K{sub s}K{sub s}K{+-}., article, November 9, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc625679/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.