Search for bosonic stop decays in R-parity violating supersymmetry in e⁺ p collisions at HERA

A Aktas; Yves Coppens; John Dowell; Peter Faulkner; Yves Fleming; John Garvey; Oliver Henshaw; Carrie Johnson; Ian Kenyon; Paul Newman; Syed Rizvi; Paul Thompson; Ethan-Etienne Woehrling

doi:10.1016/j.physletb.2004.08.032

Search for bosonic stop decays in R-parity violating supersymmetry in e⁺ p collisions at HERA

A Aktas, Yves Coppens, John Dowell, Peter Faulkner, Yves Fleming, John Garvey, Oliver Henshaw, Carrie Johnson, Ian Kenyon, Paul Newman, Syed Rizvi, Paul Thompson, Ethan-Etienne Woehrling

Physics and Astronomy

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Abstract

A search for scalar top quarks in R-parity violating supersymmetry is performed in e(+)p collisions at HERA using the H1 detector. The data, taken at roots = 319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb(-1). The resonant production of scalar top quarks t in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay t --> BW. The R-parity violating decay of the sbottom quark b --> dv(e) and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay t --> eq. Mass dependent limits on lambda' are obtained in the framework of the minimal supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength. (C) 2004 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	159
Number of pages	1
Journal	Physics Letters B
Volume	599
DOIs	https://doi.org/10.1016/j.physletb.2004.08.032
Publication status	Published - 14 Oct 2004

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title = "Search for bosonic stop decays in R-parity violating supersymmetry in e⁺ p collisions at HERA",

abstract = "A search for scalar top quarks in R-parity violating supersymmetry is performed in e(+)p collisions at HERA using the H1 detector. The data, taken at roots = 319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb(-1). The resonant production of scalar top quarks t in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay t --> BW. The R-parity violating decay of the sbottom quark b --> dv(e) and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay t --> eq. Mass dependent limits on lambda' are obtained in the framework of the minimal supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength. (C) 2004 Elsevier B.V. All rights reserved.",

author = "A Aktas and Yves Coppens and John Dowell and Peter Faulkner and Yves Fleming and John Garvey and Oliver Henshaw and Carrie Johnson and Ian Kenyon and Paul Newman and Syed Rizvi and Paul Thompson and Ethan-Etienne Woehrling",

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language = "English",

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T1 - Search for bosonic stop decays in R-parity violating supersymmetry in e⁺ p collisions at HERA

AU - Aktas, A

AU - Coppens, Yves

AU - Dowell, John

AU - Faulkner, Peter

AU - Fleming, Yves

AU - Garvey, John

AU - Henshaw, Oliver

AU - Johnson, Carrie

AU - Kenyon, Ian

AU - Newman, Paul

AU - Rizvi, Syed

AU - Thompson, Paul

AU - Woehrling, Ethan-Etienne

PY - 2004/10/14

Y1 - 2004/10/14

N2 - A search for scalar top quarks in R-parity violating supersymmetry is performed in e(+)p collisions at HERA using the H1 detector. The data, taken at roots = 319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb(-1). The resonant production of scalar top quarks t in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay t --> BW. The R-parity violating decay of the sbottom quark b --> dv(e) and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay t --> eq. Mass dependent limits on lambda' are obtained in the framework of the minimal supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength. (C) 2004 Elsevier B.V. All rights reserved.

AB - A search for scalar top quarks in R-parity violating supersymmetry is performed in e(+)p collisions at HERA using the H1 detector. The data, taken at roots = 319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb(-1). The resonant production of scalar top quarks t in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay t --> BW. The R-parity violating decay of the sbottom quark b --> dv(e) and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay t --> eq. Mass dependent limits on lambda' are obtained in the framework of the minimal supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength. (C) 2004 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.physletb.2004.08.032

DO - 10.1016/j.physletb.2004.08.032

M3 - Article

VL - 599

SP - 159

JO - Physics Letters B

JF - Physics Letters B

ER -

Search for bosonic stop decays in R-parity violating supersymmetry in e⁺ p collisions at HERA

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