Implications of $b\to s$ measurements - INSPIRE

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Implications of $b\to s$ measurements

Mar 20, 2015

7 pages

Part of Proceedings, 50th Rencontres de Moriond Electroweak Interactions and Unified Theories : La Thuile, Italy, March 14-21, 2015, 333-338

Contribution to:

50th Rencontres de Moriond on EW Interactions and Unified Theories, 333-338

e-Print:

1503.06199 [hep-ph]

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Abstract: (arXiv)

The recent updated angular analysis of the

B\to K^*\mu^+\mu^-

decay by the LHCb collaboration is interpreted by performing a global fit to all relevant measurements probing the flavour-changing neutral current

b\to s\mu^+\mu^-

transition. A significant tension with Standard Model expectations is found. A solution with new physics modifying the Wilson coefficient

C_9

is preferred over the Standard Model by

3.7\sigma

. The tension even increases to

4.2\sigma

including also

b\to se^+e^-

measurements and assuming new physics to affect the muonic modes only. Other new physics benchmarks are discussed as well. The

q^2

dependence of the shift in

C_9

is suggested as a means to identify the origin of the tension - new physics or an unexpectedly large hadronic effect.

Note:

7 pages, 2 figures. Contribution to the proceedings of the 50th Rencontres de Moriond, Electroweak Session, 14-21 March 2015. v2: References added

CERN LHC Coll
LHC-B
new physics: signature
B: rare decay
B: semileptonic decay
B: branching ratio
decay: flavor changing
neutral current: flavor changing
quark: flavor: violation
dimuon: final state

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Figures(3)

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