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X-WR-CALNAME:Applied Physics/Physics Colloquium: Marek Karliner- "Exotic Ha
 drons"
X-WR-TIMEZONE:Pacific Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260609T000746Z
UID:tag:localist.com\,2008:EventInstance_52426559530431
DTSTART:20260505T223000Z
DTEND:20260505T233000Z
DESCRIPTION:Abstract: In recent years\, experiments in high-energy accelera
 tors have discovered a large number of unusual\, heavy “cousins” of th
 e proton—i.e.\, strongly interacting particles collectively known as had
 rons. Ordinary hadrons are either baryons\, which contain three quarks\, o
 r mesons\, which contain one quark and one antiquark. The new\, unusual ha
 drons contain either two quarks and two antiquarks (known as tetraquarks) 
 or four quarks and an antiquark (known as pentaquarks). These particles ar
 e often referred to as multiquark or exotic hadrons. Given the large numbe
 r of such exotic hadrons discovered thus far\, it is becoming increasingly
  important to discuss which additional multiquark states are likely to be 
 observed and how quarks are organized within these exotic hadrons. In my t
 alk\, I will address these questions and provide some guidelines about the
  essential differences between the two types of exotics. I will also discu
 ss a very recent experimental result from the LHCb Collaboration at CERN t
 hat shows how potent Coulomb repulsion between quarks can significantly co
 ntribute to hadron mass\, in a down-to-earth demonstration of E=mc2\, flip
 ping the expected mass hierarchy between isospin partners.\n\nMarek Karlin
 er is an emeritus professor of physics at Tel Aviv University (TAU). He wa
 s born in Poland in 1955. He received his Ph.D. from TAU in 1984. As a gra
 duate student\, he spent one year at SLAC at Stanford University as a Fulb
 right Fellow. From 1984 to 1988\, he was a research associate at SLAC. He 
 has been a faculty member at TAU since 1988 and a professor since 1995. Hi
 s research focuses on the theoretical physics of elementary particles\, pa
 rticularly exotic hadrons such as tetraquarks and pentaquarks. He has made
  several successful theoretical predictions of hadrons containing heavy qu
 arks\, including the first pentaquark\, doubly heavy baryons\, and a tetra
 quark containing two charmed quarks. He also made the first robust theoret
 ical prediction for a heavy tetraquark that is stable under strong interac
 tions. In March 2026\, the LHCb Collaboration at CERN provided precise con
 firmation of his 2017 prediction regarding the surprising magnitude and si
 gn of isospin splitting between two doubly heavy baryons. From 2003 to 200
 5\, he was a visiting professor at the Cavendish Laboratory at the Univers
 ity of Cambridge in the UK. From 2015 to 2025\, he served as director of t
 he TAU Institute of Advanced Studies. Since 2017\, he has been a foreign m
 ember of the Polish Academy of Arts and Sciences\, and since 2021\,he has 
 been a member of the Warsaw University Council. Since 2021\, he has served
  as chairman of the Israeli Committee for High Energy Physics and as the s
 cientific representative of Israel in the CERN Council.
GEO:37.428953;-122.172839
LOCATION:Hewlett Teaching Center\, 201
SUMMARY:Applied Physics/Physics Colloquium: Marek Karliner- "Exotic Hadrons
 "
URL;VALUE=URI:https://events.stanford.edu/event/applied-physicsphysics-coll
 oquium-marek-karliner-exotic-hadrons
CATEGORIES:Lecture/Presentation/Talk
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