English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The heavy Z' boson with family nonuniversal couplings can introduce flavourchanging effects. Constraints on nondiagonal Z' couplings coming from the \mu-econversion in a muonic atom, K^0 - \bar{K^0} and B - \bar{B} mixing, epsilonand epsilon'/ \epsilon CP- violating coefficients have been alreadyestablished. By using the OPAL upper bound of the branching ratio for the B^--> K^- K^- \pi^+ decay, we indicate additional constraints on the Z' couplings.We comment also on the constraints of Z' couplings coming from the b->d d\bar{s} transition. The constraint obtained here from the upper bound of theB^- -> K^- K^- \pi^+ decay involves a different combination of couplings thanthose previously presented, but is much weaker.Comment: 6 page

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Constraints on heavy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>couplings from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Δ</mml:mi><mml:mi>S</mml:mi><mml:mo>=</mml:mo><mml:mn>2</mml:mn><mml:mn /><mml:mi> </mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>−</mml:mi…

Constraints on heavyZ′couplings fromΔS=2 B−