Search for new physics in e±q contact interactions at HERA

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

doi:10.1016/j.physletb.2003.06.034

Search for new physics in e±q contact interactions at HERA

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

Physics and Astronomy

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Abstract

Deep-inelastic e(+/-) p scattering at high squared momentum transfer Q(2) up to 30 000 GeV2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements dsigma / dQ(2), corresponding to integrated luminosities of 16.4 pb(-1) of e(-) p data and 100.8 pb(-1) of e(+) p data, are well described by the Standard Model and are analysed to set constraints on new phenomena. For conventional contact interactions lower limits are set on compositeness scales A ranging between 1.6-5.5 TeV. Couplings and masses of leptoquarks and squarks in R-parity violating supersymmetry are constrained to M / lambda > 0.3-1.4 TeV. A search for low scale quantum gravity effects in models with large extra dimensions provides limits on the effective Planck scale of MS > 0.8 TeV. A form factor analysis yields a bound on the radius of light quarks of R-q <1.0 10(-18) m. (C) 2003 Published by Elsevier B.V.

Original language	English
Pages (from-to)	35-47
Number of pages	13
Journal	Physics Letters B
Volume	568
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2003.06.034
Publication status	Published - 21 Aug 2003

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@article{88562fa6834b4e5b8fccde64ce8c5b2f,

title = "Search for new physics in e±q contact interactions at HERA",

abstract = "Deep-inelastic e(+/-) p scattering at high squared momentum transfer Q(2) up to 30 000 GeV2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements dsigma / dQ(2), corresponding to integrated luminosities of 16.4 pb(-1) of e(-) p data and 100.8 pb(-1) of e(+) p data, are well described by the Standard Model and are analysed to set constraints on new phenomena. For conventional contact interactions lower limits are set on compositeness scales A ranging between 1.6-5.5 TeV. Couplings and masses of leptoquarks and squarks in R-parity violating supersymmetry are constrained to M / lambda > 0.3-1.4 TeV. A search for low scale quantum gravity effects in models with large extra dimensions provides limits on the effective Planck scale of MS > 0.8 TeV. A form factor analysis yields a bound on the radius of light quarks of R-q <1.0 10(-18) m. (C) 2003 Published by Elsevier B.V.",

author = "C Adloff 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 David Lamb and Paul Newman and Syed Rizvi and Paul Thompson and Ethan-Etienne Woehrling",

year = "2003",

month = aug,

day = "21",

doi = "10.1016/j.physletb.2003.06.034",

language = "English",

volume = "568",

pages = "35--47",

journal = "Physics Letters B",

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T1 - Search for new physics in e±q contact interactions at HERA

AU - Adloff, C

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 - Lamb, David

AU - Newman, Paul

AU - Rizvi, Syed

AU - Thompson, Paul

AU - Woehrling, Ethan-Etienne

PY - 2003/8/21

Y1 - 2003/8/21

N2 - Deep-inelastic e(+/-) p scattering at high squared momentum transfer Q(2) up to 30 000 GeV2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements dsigma / dQ(2), corresponding to integrated luminosities of 16.4 pb(-1) of e(-) p data and 100.8 pb(-1) of e(+) p data, are well described by the Standard Model and are analysed to set constraints on new phenomena. For conventional contact interactions lower limits are set on compositeness scales A ranging between 1.6-5.5 TeV. Couplings and masses of leptoquarks and squarks in R-parity violating supersymmetry are constrained to M / lambda > 0.3-1.4 TeV. A search for low scale quantum gravity effects in models with large extra dimensions provides limits on the effective Planck scale of MS > 0.8 TeV. A form factor analysis yields a bound on the radius of light quarks of R-q <1.0 10(-18) m. (C) 2003 Published by Elsevier B.V.

AB - Deep-inelastic e(+/-) p scattering at high squared momentum transfer Q(2) up to 30 000 GeV2 is used to search for eq contact interactions associated to scales far beyond the HERA centre of mass energy. The neutral current cross section measurements dsigma / dQ(2), corresponding to integrated luminosities of 16.4 pb(-1) of e(-) p data and 100.8 pb(-1) of e(+) p data, are well described by the Standard Model and are analysed to set constraints on new phenomena. For conventional contact interactions lower limits are set on compositeness scales A ranging between 1.6-5.5 TeV. Couplings and masses of leptoquarks and squarks in R-parity violating supersymmetry are constrained to M / lambda > 0.3-1.4 TeV. A search for low scale quantum gravity effects in models with large extra dimensions provides limits on the effective Planck scale of MS > 0.8 TeV. A form factor analysis yields a bound on the radius of light quarks of R-q <1.0 10(-18) m. (C) 2003 Published by Elsevier B.V.

U2 - 10.1016/j.physletb.2003.06.034

DO - 10.1016/j.physletb.2003.06.034

M3 - Article

VL - 568

SP - 35

EP - 47

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Search for new physics in e±q contact interactions at HERA

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