Sheldon Stone

Stone earned a B.S. in physics from the Brooklyn College in 1967 and completed his PhD in 1972 at the University of Rochester under the guidance of Thomas Ferbel.{{cite web |title=Graduate Alumni 1970-1979 : Department of Physics and Astronomy |url=http://www.pas.rochester.edu/graduate/alumni-1970-1979.html |website=www.pas.rochester.edu |publisher=University of Rochester |access-date=9 October 2021}}{{cite report |title=Candidates for the DOCTOR OF PHILOSOPHY Degree |url=http://www.lib.rochester.edu/IN/RBSCP/University-History/ATTACHMENTS/Commencement/1973.pdf |publisher=University of Rochester |access-date=9 October 2021 |page=46 |date=June 3, 1973}}

Stone began his career as an assistant professor of physics in 1973 at Vanderbilt University, where he stayed until 1979. He moved to Cornell's Laboratory for Nuclear Studies as a senior research associate. He moved to Syracuse University in 1991 and led the Experimental High Energy Physics Group at Syracuse from 1993 until his death in 2021. Since 2011, he served as the Distinguished Professor of Physics at Syracuse.

He served as the CLEO physics analysis coordinator in 1988 and made significant contributions to data analysis and detector construction (such as the CLEO particle detectors at the electron storage ring at Cornell University.{{cite book |last1=Berkelman |first1=Karl |title=A Personal History of CESR and CLEO |date=January 2004 |publisher=World Scientific |isbn=978-981-238-697-7 |page=60 |url=https://doi.org/10.1142/5426 |access-date=9 October 2021 |language=en |chapter=10. The First Upgrade, CLEO-1.5, 1984–1989 |doi=10.1142/5426 |quote=Although there are many members whose contributions have been outstanding, Sheldon Stone and Ed Thorndike are especially noteworthy. Sheldon started out as a junior faculty member at Vanderbilt when CLEO was first organized and joined the Cornell group as a Research Associate in the early data taking period. After a while as a Cornell Adjunct Professor he became a Full Professor with the Syracuse group. Sheldon always has strong opinions on what CLEO should be doing. Although his aggressive advocacy sometimes annoys his colleagues, he is almost always right.}} He served as co-spokesperson from 2007-2008.{{cite news |title=CLEO contributor wins W.K.H. Panofsky Prize in Experimental Particle Physics |url=https://www.classe.cornell.edu/NewsAndEvents/PanofskyPrizeNov18.html |access-date=9 October 2021 |work=www.classe.cornell.edu |date=1 November 2018}}

He also was co-spokesperson of the BTeV experiment at the Fermilab from 1997 until it was terminated in 2005. He was a member of the Fermilab PAC, board of overseers, and board of directors.{{cite magazine |last1=Ruderman |first1=Gary |title=Syracuse University adds a history of technology and leadership to search for CP violation |url=https://www.fnal.gov/pub/ferminews/ferminews02-08-09/p2.html |volume=25 |issue=13 |access-date=9 October 2021 |publisher=Fermilab |date=August 9, 2002}}{{cite arXiv |last1=Stone |first1=Sheldon |title=THE Goals and Techniques of BTeV and LHC-B |date=30 September 1997 |eprint=hep-ph/9709500}}

In 2005, Stone became a LHCb collaborator and served as the Upgrade coordinator from 2008-2011, during which time the project was organized and the letter of intent submitted.{{cite web |title=Physics at LHCb |url=https://sites.slac.stanford.edu/colloquium/events/physics-lhcb |website=Colloquium Series at SLAC |access-date=9 October 2021 |date=23 March 2021}} From 2011 to 2012, he was on leave from Syracuse as a scientific associate at CERN.{{cite news |title=Syracuse University physicists first to observe rare particles produced at the Large Hadron Collider at CERN |url=https://news.syr.edu/blog/2011/03/28/large-hadron-collider/ |access-date=9 October 2021 |work=Syracuse University News |date=28 March 2011}} He died on October 6, 2021, at the age of 75.

Stone had a leading role in many important discoveries such as the observation of the B⁺, B⁰, and D_s mesons. In 2000, he pushed to convert CLEO into a charm factory, which subsequently led to the measurement of the charm-decay constants f_D+ and f_Ds. These measurements demonstrated the applicability of lattice-QCD calculations of hadronic effects in the weak decays of hadrons with a heavy quark with precision of a few-percent, thereby enabling similar calculations to be used with confidence to interpret key measurements by other flavour-physics experiments worldwide. At CLEO, Stone led the design and construction of new high-performance Th-doped near-4π CsI calorimeter detectors. This was the first application of a precision electromagnetic calorimeter to a general-purpose magnetic spectrometer. He also worked on design and construction of a Ring-imaging Cherenkov detector providing four-σ K-π separation over the full accessible momentum range.{{cite news |title=Sheldon Stone 1946-2021 |url=https://cerncourier.com/a/sheldon-stone-1946-2021/ |access-date=21 October 2021 |work=CERN Courier |date=20 October 2021}}

In 2015, Stone was involved in the discovery of the pentaquark at CERN. Five-quark resonances, called pentaquarks, were predicted at the dawn of the quark model but were only found after 50 years when Stone and a small team of colleagues uncovered their existence in the LHCb dataset.{{cite journal |last1=Chalmers |first1=Matthew |title=Forsaken pentaquark particle spotted at CERN |journal=Nature |date=1 July 2015 |volume=523 |issue=7560 |pages=267–268 |language=en |doi=10.1038/nature.2015.17968|pmid=26178944 |bibcode=2015Natur.523R.267C |s2cid=4458591 |doi-access=free }}{{cite journal |last1=Temming |first1=Maria |title=Particular Joy |url=https://www.scientificamerican.com/article/pentaquarks-make-their-debut/ |access-date=9 October 2021 |journal=Scientific American |date=15 September 2015 |volume=313 |issue=4 |pages=28 |doi=10.1038/scientificamerican1015-28|bibcode=2015SciAm.313d..28T }}{{cite news |last1=Lincoln |first1=Don |title=What the Heck is a Pentaquark? |url=https://www.pbs.org/wgbh/nova/article/what-the-heck-is-a-pentaquark/ |access-date=9 October 2021 |work=PBS |date=July 28, 2015}}

In 2021, Stone was part of a LHCb team that unexpectedly discovered the exotic narrow double-charm tetraquark (T{{su|lh=1|p=+|b=cc}}, cc{{overline|u}}{{overline|d}}), a type of long-lived tetraquark, in experiments conducted at the Large Hadron Collider.{{cite news |last1=Wood |first1=Charlie |title='Impossible' Particle Discovery Adds Key Piece to the Strong Force Puzzle |url=https://www.quantamagazine.org/impossible-particle-discovery-adds-key-piece-to-the-strong-force-puzzle-20210927/ |access-date=21 October 2021 |work=Quanta Magazine |date=27 September 2021 |language=en}}{{cite journal|last1=Aaij |first1=R. |title=Observation of an exotic narrow doubly charmed tetraquark |journal=Nature Physics |year=2022 |volume=18 |issue=7 |pages=751–754 |doi=10.1038/s41567-022-01614-y |arxiv=2109.01038|bibcode=2022NatPh..18..751L |s2cid=237385202 }}{{Cite web|title=What to Know About the Newly Discovered Tetraquark at the Large Hadron Collider|url=https://gizmodo.com/what-to-know-about-the-newly-discovered-tetraquark-at-t-1847396650|access-date=2021-09-27|website=Gizmodo|date=2 August 2021 |language=en-us}}

In 2019, Stone received the Panofsky Prize in Experimental Particle Physics of the APS for "transformative contributions to flavor physics and hadron spectroscopy, in particular through intellectual leadership on detector construction and analysis on the CLEO and Large Hadron

Collider beauty (LHCb) experiments, and for the long-standing, deeply influential advocacy for flavor physics at hadron colliders".{{Cite web|title=2019 W.K.H. Panofsky Prize in Experimental Particle Physics Recipient |url=https://www.aps.org/programs/honors/prizes/prizerecipient.cfm?last_nm=Stone&first_nm=Sheldon&year=2019|access-date=9 October 2021 |work=American Physical Society|language=en}}{{cite magazine |title=APS announces 2019 prize and award winners |magazine=CERN Courier |date=December 2018 |volume=58 |issue=10 |page=35 |url=https://cerncourier.com/wp-content/uploads/2019/04/CERNCourier2018Dec-digitaledition.pdf |access-date=9 October 2021}}

He was elected a fellow of the American Physical Society (APS) in 1993 for "outstanding contributions to the study of b-quark decays".{{cite web |title=APS Fellow Archive |url=https://www.aps.org/programs/honors/fellowships/archive-all.cfm?initial=&year=1993&unit_id=DPF&institution=Syracuse+University |website=www.aps.org |publisher=American Physical Society |access-date=9 October 2021 |language=en}}

• {{cite book |title=B Decays |date=1994 |publisher=World Scientific |doi=10.1142/1441 |isbn=9789810213305 |edition=2nd |url=https://doi.org/10.1142/1441 |oclc=636743000|last1=Stone |first1=Sheldon }}

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Category:1946 births

Category:2021 deaths

Category:Scientists from Brooklyn

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Category:21st-century American physicists

Category:Fellows of the American Physical Society

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Category:People associated with CERN

Category:Brooklyn College alumni

Category:University of Rochester alumni

Category:Vanderbilt University faculty

Category:Cornell University faculty

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