Jusak Tandean

collaborators

5 papers

hep-ph2025

CP violation in the hyperon decays $Σ \to N π$

Xiao-Gang He, Xiao-Dong Ma, Jusak Tandean +1

The study of $C P$ violation in hyperon transitions has a long history. In the early 2000s the HyperCP experiment made a major effort to seek $C P$ -odd signals in the decay sequence…

hep-ph2025

Light dark-matter window constrained by \boldmath $K^{+} \to π^{+}$ $+$ $\neq E$

Xiao-Gang He, Xiao-Dong Ma, Jusak Tandean +1

We explore the constraints on new physics from the recent NA62 observation of the kaon decay $K^{+} \to π^{+}$ + $\neq E$ with missing energy $\neq E$ in the context of a dark-ma…

hep-ph2025

Large CP violation in $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ and its U-spin partner decays

Xiao-Gang He, Chia-Wei Liu, Jusak Tandean

The LHCb Collaboration has recently found a large CP-violating rate asymmetry in the $b$ -baryon decay $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ . This is the first observation of CP violation in baryo…

hep-ph2025

$B \to K +$ invisible, dark matter, and $C P$ violation in hyperon decays

Xiao-Gang He, Xiao-Dong Ma, Jusak Tandean +1

Recently the Belle II Collaboration has reported a measurement of the $B^{+} \to K^{+} ν ν ˉ$ rate that is higher than the standard-model expectation. Since the emitted neutrinos are un…

hep-ph2024

Remarks on strong phase shifts in weak nonleptonic baryon decays

Hong-Jian Wang, Pei-Rong Li, Xiao-Rui Lyu +2

A sizable strong-interaction phase shift in weak two-body nonleptonic baryon decay would enhance the possibility of discovering charge-conjugation parity ( $C P$ ) violation in the ba…

CP violation in the hyperon decays Σ→Nπ

Light dark-matter window constrained by \boldmathK+→π++E

Large CP violation in Λb0​→pK−π+π− and its U-spin partner decays

B→K+invisible, dark matter, and CP violation in hyperon decays

Remarks on strong phase shifts in weak nonleptonic baryon decays

CP violation in the hyperon decays $Σ \to N π$

Light dark-matter window constrained by \boldmath $K^{+} \to π^{+}$ $+$ $\neq E$

Large CP violation in $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ and its U-spin partner decays

$B \to K +$ invisible, dark matter, and $C P$ violation in hyperon decays