1. |
- Ahmed, M., et al.
(författare)
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Search for the lepton-family-number nonconserving decay μ +→e +γ
- 2002
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Ingår i: Physical Review D. - : American Physical Society. - 1550-7998 .- 1550-2368. ; 65:11
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Tidskriftsartikel (refereegranskat)abstract
- The MEGA experiment, which searched for the muon- and electron-number violating decay μ +→e + γ, is described. The spectrometer system, the calibrations, the data taking procedures, the data analysis, and the sensitivity of the experiment are discussed. The most stringent upper limit on the branching ratio, B(μ + →e + γ)<1.2×10 -11 with 90% confidence, is derived from a likelihood analysis.
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2. |
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3. |
- Sjöstrand, Torbjörn, et al.
(författare)
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Gamma gamma interactions from real to virtual photons
- 2001
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Ingår i: Physics and experiments with future linear e+ e- colliders, Proceedings, 5th International Linear Collider Workshop (LCWS 2000). - : AIP. - 0735400172 ; 578, s. 373-376
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Konferensbidrag (refereegranskat)abstract
- A ‘complete’ framework for γγ/γ*γ/γ*γ* interactions is presented. The emphasis is on providing a model for γγ physics at all photon virtualities, including the difficult transition region Q2∼m2ρ.
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4. |
- Sjöstrand, Torbjörn, et al.
(författare)
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QCD radiation off heavy particles
- 2001. - 1
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Ingår i: Physics and Experiments with Future Linear e+ e- Colliders: Proceedings, 5th International Linear Collider Workshop (LCWS 2000) Batavia, Illinois, October 24-28, 2000. - : AIP. - 0094-243X. - 0735400172 ; 578:1, s. 360-363
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Konferensbidrag (refereegranskat)abstract
- An algorithm for an improved description of final-state QCD radiation is introduced. It is matched to the first-order matrix elements for gluon emission in a host of decays, for processes within the Standard Model and the Minimal Supersymmetric extension thereof.
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