Contents

Contents

Idea

In particle physics the term Z’-boson refers to a hypothetical higher-mass cousin of the Z-boson which is predicted by some models that extend the standard model of particle physics, such as grand unified theories (e.g. Sahoo 06).

The existence of the $Z'$ has been proposed as one possible explanation of the apparently observed flavour anomalies (Gauld-Goertz-Haisch 13, D’Ambrosio-Iver-Piccinini-Polosa 19)

References

Experimental constraints:

• CMS collaboration, Search for an $L_\mu - L_\tau$ gauge boson using $Z \to 4\mu$ events in proton-proton collisions at $\sqrt{s} = 13TeV$ (arXiv:1808.03684)

As arising in GUTs:

• S. Sahoo, The prediction of mass of $Z'$-boson in an $SO(10)$-based model, Indian J. Phys. 80 (2), 191-194 (2006) (pdf)

As a possible solution to the flavour anomalies:

• Rhorry Gauld, Florian Goertz, Ulrich Haisch, An explicit Z’-boson explanation of the $B \to K^\ast \mu^+ \mu^-$ anomaly, JHEP01(2014)069 (arXiv:1310.1082)

• Giancarlo D’Ambrosio, A. M. Iyer, F. Piccinini, A.D. Polosa, Confronting $B$ anomalies with atomic physics (arXiv:1902.00893)

• P. Ko, Takaaki Nomura, Chaehyun Yu, $b \to s \mu^+ \mu^-$ anomalies and related phenomenology in $U(1)_{B_{3-x_\mu L_\mu - x_\tau L_\tau}}$ flavor gauge models (arXiv:1902.06107)

• Joe Davighi, Connecting neutral current $B$ anomalies with the heaviness of the third family, Contribution to the 2019 QCD session of the 54th Rencontres de Moriond (arXiv:1905.06073)

Last revised on May 16, 2019 at 07:39:08. See the history of this page for a list of all contributions to it.