Search for Non-Standard Model Physics in Rare Decays at CDF

Conference · Fri Jan 01 04:00:00 EST 2010 · PoS

DOI:https://doi.org/10.22323/1.120.0261· OSTI ID:1974010

Rescigno, M. ^[1]

---

1. INFN, Rome

We present two recent results obtained by the CDF collaboration at the Tevatron collider. We first describe the first polarization measurement in a charmless $$B^0_s$$ decay in two light vector mesons, $$B^0_s \to \phi\phi$$, using 2.9 $$fb^{-1}$$ of data. An angular analysis of the final state decay products allows CDF to determine a longitudinal polarization fraction $$fL = 0.348 \pm 0.041 (stat.) \pm 0.021 (syst.)$$, which is inconsistent with naive expectations based on the V-A nature of weak currents and confirms the pattern of lower than expected longitudinal polarization fraction in $$b \to s$$ penguin dominated $$B \to VV$$ decays. We then report on the first observation of the electroweak penguin decay $$B^0_s \to \phi\mu^+ \mu^-$$ and on the measurement of the differential decay rate, longitudinal polarization fraction and forward-backward asymmetry in $$B^0 \to K^{*0} \mu ^+ \mu^-$$ decays using 4.4 fb$$^{-1}$$ of data.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1974010
• Report Number(s): FERMILAB-CONF-10-608-E; oai:inspirehep.net:899484
• Conference Information: Journal Name: PoS Journal Volume: ICHEP2010
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS