Search for the lepton-flavour violating decays B-0 -> K-*0 mu(+/-)e(-/+) and B-s(0)-> phi mu(+/-)e(-/+)

• A search for the lepton-flavour violating decays B-0 -> K-*0 mu e(-/+) and B-s(0)-> mu(+/-)e(-/+) is presented, using proton-proton collision data collected by the LHCb detector at the LHC, corresponding to an integrated luminosity of 9 fb(-1). No significant signals are observed and upper limits ofB(B0→ K∗0µ+e−) < 5.7 × 10−9(6.9 × 10−9),B(B0→ K∗0µ−e+) < 6.8 × 10−9(7.9 × 10−9),B(B0→ K∗0µ±e∓) < 10.1 × 10−9(11.7 × 10−9),B(B0s → φµ±e∓) < 16.0 × 10−9(19.8 × 10−9)are set at 90% (95%) confidence level. These results constitute the world's most stringent limits to date, with the limit on the decay B-s(0) -> phi mu(+/-) e(-/+) the first being set. In addition, limits are reported for scalar and left-handed lepton-flavour violating New Physics scenarios.

Ämnesord

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

Nyckelord

B Physics

Flavour Physics

Hadron-Hadron Scattering

Rare Decay

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)