Correlating Bq0→μ+μ− and KL→π0νν¯ decays with four generations
The Bs→μ+μ− mode has finally been observed, albeit at rate 1.2σ below Standard Model (SM) value, while the rarer Bd0→μ+μ− decay has central value close to 4 times SM expectation but with only 2.2σ significance. The measurement of CP violating phase ϕs has finally reached SM sensitivity. Concurrent w...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315008394 |
| Summary: | The Bs→μ+μ− mode has finally been observed, albeit at rate 1.2σ below Standard Model (SM) value, while the rarer Bd0→μ+μ− decay has central value close to 4 times SM expectation but with only 2.2σ significance. The measurement of CP violating phase ϕs has finally reached SM sensitivity. Concurrent with improved measurements at LHC Run 2, KL→π0νν¯ and K+→π+νν¯ decays are being pursued in a similar time frame. We find, whether Bd0→μ+μ− is enhanced or not, KL→π0νν¯ can be enhanced up to the Grossman–Nir bound in the fourth generation model, correlated with some suppression of Bs→μ+μ−, and with ϕs remaining small. |
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| ISSN: | 0370-2693 1873-2445 |