Light U(1) gauge boson coupled to baryon number

Conference · Thu Jun 01 04:00:00 EDT 1995

OSTI ID:132772

Carone, C D; Murayama, Hitoshi ^[1]

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1. Lawrence Berkeley Lab., CA (United States). Theoretical Physics Group

The authors discuss the phenomenology of a light U(1) gauge boson, {gamma}{sub B}, that couples only to baryon number. Gauging baryon number at high energies can prevent dangerous baryon-number violating operators that may be generated by Planck scale physics. However, they assume at low energies that the new U(1) gauge symmetry is spontaneously broken and that the {gamma}{sub B} mass m{sub B} is smaller than m{sub z}. They show for m{sub {Upsilon}} < m{sub B} < m{sub z} that the {gamma}B coupling {alpha}{sub B} can be as large as {approximately} 0.1 without conflicting with the current experimental constraints. The authors argue that {alpha}{sub B} {approximately} 0.1 is large enough to produce visible collider signatures and that evidence for the {gamma}{sub B} could be hidden in existing LEP data. They show that there are realistic models in which mixing between the {gamma}{sub B} and the electroweak gauge bosons occurs only as a radiative effect and does not lead to conflict with precision electroweak measurements. Such mixing may nevertheless provide a leptonic signal for models of this type at an upgraded Tevatron.

• Research Organization: Lawrence Berkeley Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 132772
• Report Number(s): LBL--37432; CONF-9505280--6; ON: DE96002441
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARYON NUMBER
BOSONS
CONFIGURATION MIXING
COUPLING CONSTANTS
FERMILAB TEVATRON
GAUGE INVARIANCE
INTERMEDIATE VECTOR BOSONS
STANDARD MODEL
SYMMETRY BREAKING
U-1 GROUPS