Production of single heavy charged leptons at a linear collider

Journal Article · Thu May 01 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.093001· OSTI ID:21250093

De Pree, Erin; Sher, Marc; Turan, Ismail ^[1]

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1. Particle Theory Group, Department of Physics, College of William and Mary, Williamsburg, Virginia 23187 (United States)

A sequential fourth generation of quarks and leptons is allowed by precision electroweak constraints if the mass splitting between the heavy quarks is between 50 and 80 GeV. Although heavy quarks can be easily detected at the LHC, it is very difficult to detect a sequential heavy charged lepton, L, due to large backgrounds. Should the L mass be above 250 GeV, it cannot be pair-produced at a 500 GeV ILC. We calculate the cross section for the one-loop process e{sup +}e{sup -}{yields}L{tau}. Although the cross section is small, it may be detectable. We also consider contributions from the two-Higgs doublet model and the Randall-Sundrum model, in which case the cross section can be substantially higher.

• OSTI ID: 21250093
• Journal Information: Physical Review. D, Particles Fields, Vol. 77, Issue 9; Other Information: DOI: 10.1103/PhysRevD.77.093001; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
C QUARKS
CERN LHC
CROSS SECTIONS
ELECTRON-POSITRON COLLISIONS
GEV RANGE
HIGGS MODEL
LEPTONS
LINEAR COLLIDERS
MASS
PAIR PRODUCTION
PARTICLE DECAY
T QUARKS
WEINBERG-SALAM GAUGE MODEL