Some new aspects of supersymmetry<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>R</mml:mi></mml:math>-parity violating interactions

Barger, V.; Giudice, Gian F.; Han, Tao

doi:10.1103/physrevd.40.2987

Cited by 479 publications

(611 citation statements)

References 32 publications

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“…from the ratio R π = Γ(π → eν e )/Γ(π → µν µ ) [2,4]. The bound on the coupling λ ′ 111 from neutrino-less double beta decay [2,26] is very strict and basically excludes an observable signal.…”

Section: Signalmentioning

confidence: 99%

“…1 lead to different resonant production mechanisms in various collider experiments. The first term leads to resonant sneutrino production in e + e − collisions [3][4][5][6][7][8][9], while the third term gives resonant squark production in hadron-hadron collisions [10][11][12][13][14][15][16][17]. The second term gives both resonant squark production in ep collisions [18] and resonant slepton production in hadron-hadron collisions, which we will consider here.…”

Section: Introductionmentioning

confidence: 99%

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Resonant slepton production in hadron-hadron collisions

2001

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We consider the resonant production of sleptons via R p in hadron-hadron collisions followed by supersymmetric gauge decays of the sleptons. We look at decay modes which lead to the production of a like-sign dilepton pair. The dominant production mechanism giving this signature is the resonant production of a charged slepton followed by a decay to a charged lepton and a neutralino which then decays via R p . The discovery potential of this process at Run II of the Tevatron and the LHC is investigated using the HERWIG Monte Carlo event generator. We include the backgrounds from the MSSM. We conclude with a discussion of the possibility of extracting the lightest neutralino and slepton masses.

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Section: Signalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resonant slepton production in hadron-hadron collisions

2001

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“…• Low energy observables (for example, meson decays) lead to severe constraints [14] on several of these couplings and even more so, on their products. Although many of these bounds were derived in the context of specific ultraviolet completions, it is easy to see that they are equally applicable to the generic contact interactions.…”

Section: Introductionmentioning

confidence: 99%

NLO corrections to lepton pair production beyond the Standard Model at hadron colliders

Choudhury¹,

Majhi²,

Ravindran³

2006

J. High Energy Phys.

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We consider lepton pair production at a hadron collider in a class of effective theories with the relevant operators being four-fermion contact interaction. Despite the nonrenormalizable nature of the interaction, we explicitly demonstrate that calculating QCD corrections is both possible and meaningful. Calculating the corrections for various differential distributions, we show that these can be substantial and significantly different from those within the SM. Furthermore, the corrections have a very distinctive flavour dependence. And finally, the scale dependence of the cross sections are greatly reduced once the NLO corrections are taken into account.

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“…This is due to the fact that the absolute, and not the relative, error is crucial in this search. The results are compared with limits on R{parity breaking interactions from processes at lower energies [7]. The strongest limit on the coupling 131 comes from precise measurements of the ratio R = ( !…”

Section: Analysis and Resultsmentioning

confidence: 99%

“…In this case the superpotential contains L{violating trilinear Yukawa couplings, W lll 6R , of two leptons to scalar sleptons [6,7]:…”

Section: Introductionmentioning

confidence: 99%

Search for R-parity breaking sneutrino exchange at LEP

Acciarri¹,

Adriani²,

Aguilar-Benı́tez³

et al. 1997

Physics Letters B

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We report on a search for R{parity breaking e ects due to supersymmetric tau{ sneutrino exchange in the reactions e + e ! e + e and e + e ! + at centre{of{ mass energies from 91 GeV to 172 GeV, using the L3 detector at LEP. No evidence for deviations from the Standard Model expectations of the measured cross sections and forward{backward asymmetries for these reactions is found. Upper limits for the couplings 131 and 232 for sneutrino masses up to m 190 GeV are determined from an analysis of the expected e ects due to tau sneutrino exchange.

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Some new aspects of supersymmetryR-parity violating interactions

Cited by 479 publications

References 32 publications

Resonant slepton production in hadron-hadron collisions

Resonant slepton production in hadron-hadron collisions

NLO corrections to lepton pair production beyond the Standard Model at hadron colliders

Search for R-parity breaking sneutrino exchange at LEP

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