Possible light U(1) gauge boson coupled to baryon number

Carone, Christopher D.; Murayama, Hitoshi

doi:10.1103/PhysRevLett.74.3122

Possible light U(1) gauge boson coupled to baryon number

Nov, 1994

13 pages

Published in:

Phys.Rev.Lett. 74 (1995) 3122-3125

e-Print:

hep-ph/9411256 [hep-ph]

DOI:

10.1103/PhysRevLett.74.3122

Report number:

LBL-36338

View in:

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Abstract:

We discuss the phenomenology of a light U(1) gauge boson,

\gamma_B

, that couples only to baryon number. We assume that the new U(1) gauge symmetry is spontaneously broken and that the

\gamma_B

mass is smaller than

m_Z

. Nevertheless, we show that the model survives the current experimental constraints. In addition, we argue that evidence for the existence of such a particle could be hidden in existing LEP and Tevatron data. We determine the allowed regions of the

m_B

-

\alpha_B

plane, where

m_B

is the

\gamma_B

mass, and where

4 \pi \alpha_B

is the squared gauge coupling. We point out that in some parts of the allowed parameter space our model can account for rapidity gap events in proton-antiproton scattering seen at the Fermilab Tevatron.

Note:

11 pages, LaTeX, 4 figures in a uuencoded compressed postscript file. Report-no: LBL-36338

gauge boson: postulated particle
gauge boson: mass
mass: gauge boson
coupling: baryon number
baryon number: coupling
symmetry: U(1)
spontaneous symmetry breaking
Z0: nonleptonic decay
nonleptonic decay: Z0
Z0: width

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