Jack Steinberger

About Jack Steinberger

Who is it?: Physicist
Birth Day: May 25, 1921
Birth Place: Bad Kissingen, United States
Known for: Discovery of the muon neutrino
Spouse(s): Cynthia Alff
Awards: Nobel Prize in Physics (1988) National Medal of Science (1988) Matteucci Medal (1990)
Fields: Physics
Institutions: University of California, Berkeley Columbia University CERN
Academic advisors: Edward Teller Enrico Fermi
Notable students: Melvin Schwartz Eric L. Schwartz David R. Nygren Theodore Modis

Jack Steinberger

Jack Steinberger was born on May 25, 1921 in Bad Kissingen, United States, is Physicist. Jack Steinberger is a physicist who co-discovered the muon neutrino along with Leon Lederman and Melvin Schwartz, a discovery which earned the trio the 1988 Nobel Prize in Physics. Born as a Jew in Germany, he received a very simple upbringing as the country was still reeling under the post-war depression. Things took a turn for the worst when the Nazi party came into power and the systematic persecution of the Jews began. Fearing for their son’s life, his parents arranged to have him sent to the United States when he was 13. He struggled to establish himself in the foreign land and was aided by Jewish charities in the United States. Despite all the challenges he faced, he studied hard and obtained a bachelor's degree in Chemistry from the University of Chicago. He then worked towards his master’s degree and PhD and eventually embarked on an academic career. He conducted extensive research over the course of his career. Along with his Columbia University colleagues Lederman and Schwartz, he worked on significant experiments in particle physics which led to the discovery of a new type of neutrino called a muon neutrino. In addition to his scientific career, Steinberger is a Humanist Laureate in the International Academy of Humanism.
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As per our current Database, Jack Steinberger is still alive (as per Wikipedia, Last update: May 10, 2020).

🎂 Jack Steinberger - Age, Bio, Faces and Birthday

Currently, Jack Steinberger is 102 years, 4 months and 5 days old. Jack Steinberger will celebrate 103rd birthday on a Saturday 25th of May 2024. Below we countdown to Jack Steinberger upcoming birthday.

Popular As Jack Steinberger
Occupation Scientists
Age 102 years old
Zodiac Sign Gemini
Born May 25, 1921 (Bad Kissingen, United States)
Birthday May 25
Town/City Bad Kissingen, United States
Nationality United States

🌙 Zodiac

Jack Steinberger’s zodiac sign is Gemini. According to astrologers, Gemini is expressive and quick-witted, it represents two different personalities in one and you will never be sure which one you will face. They are sociable, communicative and ready for fun, with a tendency to suddenly get serious, thoughtful and restless. They are fascinated with the world itself, extremely curious, with a constant feeling that there is not enough time to experience everything they want to see.

🌙 Chinese Zodiac Signs

Jack Steinberger was born in the Year of the Rooster. Those born under the Chinese Zodiac sign of the Rooster are practical, resourceful, observant, analytical, straightforward, trusting, honest, perfectionists, neat and conservative. Compatible with Ox or Snake.

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Steinberger was born in the city of Bad Kissingen in Bavaria, Germany, in 1921. The rise of Nazism in Germany, with its open anti-Semitism, prompted his parents, Ludwig (a cantor and religious teacher) and Berta, to send him out of the country.


Steinberger studied chemical engineering at Armour Institute of Technology (now Illinois Institute of Technology) but left after his scholarship ended to help supplement his family's income. He obtained a bachelor's degree in Chemistry from the University of Chicago, in 1942. Shortly thereafter, he joined the Signal Corps at MIT. With the help of the G.I. Bill, he returned to graduate studies at the University of Chicago in 1946, where he studied under Edward Teller and Enrico Fermi. His Ph.D. thesis concerned the Energy spectrum of electrons emitted in muon decay; his results showed that this was a three-body decay, and implied the participation of two neutral particles in the decay (later identified as the electron (ν e) and muon (ν μ) neutrinos) rather than one.


After receiving his doctorate, Steinberger attended the Institute for Advanced Study in Princeton for a year. In 1949 he published a calculation of the lifetime of the neutral pion, which anticipated the study of anomalies in quantum field theory.


Steinberger accepted a faculty position at Columbia in 1950. The newly commissioned meson beam at Nevis Labs provided the tool for several important experiments. Measurements of the production cross section of pions on various nuclear targets showed that the pion has odd parity. A direct measurement of the production of pions on a liquid hydrogen target, then not a Common tool, provided the data needed to show that the pion has spin zero. The same target was used to observe the relative rare decay of neutral pions to a photon, an electron, and a positron. A related experiment measured the mass difference between the charged and neutral pions based on the angular correlation between the neutral pions produced when the negative pion is captured by the proton in the hydrogen nucleus. Other important experiments studied the angular correlation between electron-positron pairs in neutral pion decays, and established the rare decay of a charged pion to an electron and neutrino; the latter required use of a liquid-hydrogen bubble chamber.


During 1954–1955, Steinberger contributed to the development of the bubble chamber with the construction of a 15 cm device for use with the Cosmotron at Brookhaven National Laboratory. The experiment used a pion beam to produce pairs of hadrons with strange quarks in order to elucidate the puzzling production and decay properties of these particles. Somewhat later, in 1956, he used a 30 cm chamber outfitted with three cameras to discover the neutral Sigma hyperon and measure its mass. This observation was important for confirming the existence of the SU(3) flavor symmetry which hypothesizes the existence of the strange quark.


In the 1960s, the emphasis in the study of the weak interaction shifted from strange particles to neutrinos. Leon Lederman, Steinberger and Schwartz built large spark chambers at Nevis Labs and exposed them in 1961 to neutrinos produced in association with muons in the decays of charged pions and kaons. They used the Alternating Gradient Synchrotron (AGS) at Brookhaven, and obtained a number of convincing events in which muons were produced, but no electrons. This result, for which they received the Nobel Prize in 1988, proved the existence of a type of neutrino associated with the muon, distinct from the neutrino produced in beta decay.


The experiment used charged pion beams generated with the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory. The pions decayed to muons which were detected in front of a steel wall; the neutrinos were detected in spark chambers installed behind the wall. The coincidence of muons and neutrinos demonstrated that a second kind of neutrino was created in association with muons. Subsequent experiments proved this neutrino to be distinct from the first kind (electron-type). Steinberger, Lederman and Schwartz published their work in Physical Review Letters in 1962.


The CP violation (charge conjugation and parity) was established in the neutral kaon system in 1964. Steinberger recognized that the phenomenological parameter epsilon (ε) which quantifies the degree of CP violation could be measured in interference phenomena (See CP violation). In collaboration with Carlo Rubbia, he performed an experiment while on sabbatical at CERN during 1965 which demonstrated robustly the expected interference effect, and also measured precisely the difference in mass of the short-lived and long-lived neutral kaon masses.


In 1968, Steinberger left Columbia University and accepted a position as a department Director at CERN. He constructed an experiment there utilizing multi-wire proportional chambers (MWPC), recently invented by Georges Charpak. The MWPC's, augmented by micro-electronic amplifiers, allowed much larger samples of events to be recorded. Several results for neutral kaons were obtained and published in the early 1970s, including the observation of the rare decay of the neutral kaon to a muon pair, the time-dependence of the asymmetry for semi-leptonic decays, and a more precise measurement of the neutral kaon mass difference. A new era in experimental technique was opened.


These new techniques proved crucial for the first demonstration of direct CP-violation. The NA31 experiment at CERN was built in the early 1980s using the CERN SPS 400 GeV proton synchrotron. Aside from banks of MWPC's and a hadron calorimeter, it featured a liquid argon electromagnetic calorimeter with exceptional spatial and Energy resolution. NA31 showed that direct CP violation is real.


Jack Steinberger was awarded the Nobel Prize in Physics in 1988, "for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino". He shares this prize with Leon M. Lederman and Melvin Schwartz. At the time, all three experimenters were at Columbia University.

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