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RARE PROCESSES:PAST PRESENT FUTUREDoug Glenzinski @ Frank Merritt Fest 2015

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RARE PROCESSES & PRECISION MEASUREMENTS:PAST PRESENT FUTURE

Doug Glenzinski @ Frank Merritt Fest 2015

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Accessing New Physics through Loops

A rare decay is suppressed in the SM

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Accessing New Physics through Loops

A rare decay is suppressed in the SM A rare decay is sensitive to NP

contributions

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Accessing New Physics through Loops

Measurements of fundamental parameters

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Accessing New Physics through Loops

Measurements of fundamental parameters (if precise enough) are sensitive to loop contributions

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Accessing New Physics through Loops

Measurements of fundamental parameters (if precise enough) are sensitive to loop contributions

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Accessing New Physics through Loops

Precision electroweak measurements pointed to a SM higgs of ~100 GeV/c2 long before colliders got there

September, 2009

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Accessing New Physics through Loops

There are many examples…

am

K+p+nn

megmNeN

10 What we knew in 1977

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What we knew in1977

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What we knew in1977

Rapid experimental progress through 1970s

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What we knew in 1977

Relevance of precision measurements and rare processes understood am = (11620000+/- 5000)x10-10 (G.Charpak et al.

1962) meg < 3.6 x 10-9 (Depommier et al., 1977) mNeN < 4.0 x 10-10 (Badertscher et al., 1977) KLmm < 2.6 x 10-8 (Darriulat et al., 1970) Kobayashi and Maskawa (1973) Mw > 20 GeV/c2

Mt > Mb > 5 GeV/c2

Rare B-decays not yet discussed

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What we know now

SM is damn good… am = (11659209+/-6)x10-10 (G.W. Bennett et al.,

2006) meg < 5.7 x 10-13 (J. Adam et al., 2013) mNeN < 7 x 10-13 (W. Bertl et al., 2006) KLmm = (6.8 +/- 0.1)x10-9 (D.Ambrose et al., 2000) Full suite of CKM constraints Mw = 80.385 +/- 0.015 GeV/c2 (CDF+D0 2012) Mt = 173.2 +/- 0.9 GeV/c2 (CDF+D0, 2014) B = mm (2.8 +/- 0.7)x10-9 (CMS+LHCb, 2015)

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What we know now

SM is damn good… but am is 3s different than SM prediction CPV in CKM insufficient to produce

observed baryon asymmetry in universe Mw, Mt, other precision EWK some tension

exists meg , mNeN , teg , etc. poised for

significant improvements over next decade

16 And in 35 years?

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Concerning Mw, Mt, Mh

“2000 Physicists Finally Figure out What They’re Measuring”

Physicist Gaston Guttierez Jr. explains, “My dad was always lamenting, ‘We work so hard to measure the top-quark mass but all we’re doing is quantifying a parameter in Pythia’. After many years of work we finally know that it’s the pole mass!”

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Concerning Mw, Mt, Mh

“2000 Physicists Finally Figure out What They’re Measuring”

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Concerning am

“Muon Anomalous Magnetic Moment a Real Teaser ”

A new measurement of am, with a precision of 10 parts per billion, is not quite consistent with theoretical expectations. The 3s discrepancy has physicists puzzled. Prof. Lee Roberts, spokesperson in perpetuity, barked, “What! Again?! I know this is pointing to something profound. We just need to keep plugging away.”

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Concerning am

“Muon Anomalous Magnetic Moment a Real Teaser ”

curr

en

t FermilabGoals~2020

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Concerning CLFV (e.g. meg , mNeN)

“New Source of CP Violation May Help Explain Why We’re Here”

Spurred by discoveries in 2022, scientists embarked on a global program to precisely measure a variety of CLFV interactions. The fruits of their labor point to a new source of CP violation.

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Concerning CLFV (e.g. meg , mNeN)

“New Source of CP Violation May Help Explain Why We’re Here”4

0

1

3

2

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V. Cirigliano et al., phys. Rev. D80 013002 (2009)

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Ron R

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Concerning CLFV (e.g. meg , mNeN)

“New Source of CP Violation May Help Explain Why We’re Here”

arXiv:090

9.5454v2[hep-ph

]

M.Blanke, A.J.Buras, B.Duling, S.Recksiegel, C.Tarantino

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Concerning ns

“Fermilab Experiment Gets First Data”

The FUNDUS* experiment, a collaboration of physicists and laboratories from around the world, celebrated it’s first data after a long, arduous, and sometimes frustrating journey. Fermilab director Young Kee Kim quipped, “It was taking way too long. I started this almost 50 years ago. I figured if you want something done right, then you have to do it yourself.” Dr. Kim is also the CERN DG, Head of KEK, and Deputy Undersecretary for Science at DOE.

FUNDUS = Fermilab Underground Neutrino Detector – Underground, SeriouslyFormerly known as FFUN, FONsE, LUnDON, NOsE, DUNE, and LBNE

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Closing remarks

Whatever the next 35 years hold in store, I hope they are as exciting, as penetrating, and as relentlessly productive as the last 35!

Frank and Wyatt, we wish you all the best!