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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Recently, Belle II announced evidence for the decay $B^+\to K^+ \nu\bar{\nu}$ at $3.6\sigma$ significance, and measured the corresponding decaybranching ratio to be $2.4\times 10^{-5}$, which is $2.8\sigma$ above thestandard-model prediction. Here, we provide a theoretical explanation based ona massless bino in R-parity-violating (RPV) supersymmetry. With a singlenon-vanishing RPV coupling $\lambda'_{i23/i32}$, $\lambda'_{i13/i33}$, or$\lambda'_{i12/i22}$, where $i=1,2,3$, the decay $B^+\to K^+\overset{\scriptscriptstyle(-)}{\nu} \tilde{\chi}^0_1$ can be induced, whichwould lead to the same signature as $B^+\to K^+ \nu \bar{\nu}$. Taking intoaccount both theoretical and experimental uncertainties, we derive the parts ofthe parameter space of the RPV coupling and sfermion masses that couldaccommodate the new measurement at various significance levels.

The Decay $B\to K\nu\bar{\nu}$ at Belle II and a Massless Bino in R-parity-violating Supersymmetry