Observation of a Hyperon with Strangeness Minus Three*

Barnes, V. E.; Connolly, P. L.; Crennell, D. J.; Culwick, B. B.; Delaney, W. C.; Fowler, W. B.; Hagerty, P. E.; Hart, E. L.; Horwitz, N.; Hough, P.V.C.; Jensen, J. E.; Kopp, J. K.; Lai, K. W.; Leitner, J.; Lloyd, J. L.; London, G. W.; Morris, T. W.; Oren, Y.; Palmer, R. B.; Prodell, A. G.; Radojicic, D.; Rahm, D. C.; Richardson, C. R.; Samios, N. P.; Sanford, J. R.; Shutt, R. P.; Smith, J. R.; Stonehill, D. L.; Strand, R. C.; Thorndike, A. M.; Webster, M. S.; Willis, W. J.; Yamamoto, S. S.

doi:10.1201/9780429496615-8

Cited by 17 publications

(22 citation statements)

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“…x Bj mentioned in the previous section 9 . If the nucleon is built up of different kinds of quark flavors, then the structure functions F 1 (x, Q 2 ) and F 2 (x, Q 2 ) are given by…”

Section: Structure Functions In the Quark-parton Modelmentioning

confidence: 88%

“…2.35 Per nucleon cross section ratios of 3 He, 4 He, 9 Be, 12 C, 63 Cu and 197 3.36 RT curve of DC3mU plane obtained from an iterative analysis. Since the SeaQuest TDCs adopted the "common stop" mode, a higher time (T) indicates a smaller R value.…”

Section: 34mentioning

confidence: 99%

“…3 shows examples of a meson octet, a baryon octet and a baryon decuplet chart. Based on the missing members on the decuplet chart, Gell-Mann predicted the existence (and also calculated the mass) of a new particle with strangeness = -3 (Ω − baryon) [9]. With the discovery of this new particle, Gell-Mann's "mathematical entities" called quarks, became considered as possible real particles and this gave the first hint of a deeper "simpler" underlying substructure to the multiplicity of observed baryons and mesons.…”

Section: The Birth Of Quarksmentioning

confidence: 99%

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Light Anti-Quark Flavor Asymmetry in the Nucleon Sea and the Nuclear Dependence of Anit-Quarks in Nuclei at the Seaquest Experiment

Tadepalli

2019

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is an experiment aimed at studying the anti-quark distributions of nucleons and nuclei. The experiment uses a 120 GeV/c proton beam extracted from the Main Injector at Fermilab to collide with various solid and cryogenic targets to study a variety of physics topics. The experiment takes advantage of the Drell-Yan process in order to probe specifically the high-x anti-quark distributions of the target nucleus. The acceptance of the spectrometer is tuned to explore the unprecedentedly high Bjorken-x region, thereby extending our knowledge of the anti-quark sea structure of nucleons and nuclei.A new Intensity-Extrapolation method was developed to counter the rate dependence challenge at SeaQuest. Using this method, the ratio of cross sections of liquid deuterium and liquid hydrogen, σ pd (x)/2σ pp (x), was measured in the range 0.1 ≤ x T ≤ 0.45. The results have been found to be consistently above 1 for all values of the measured range of x T . Also, a first look atd(x)/ū(x) is presented. The trend of the data points indicate that the ratio is consistently above 1 for the measured range of x T . These results (when combined with more data) will provide a key input in constraining many theoretical models that attempt to explain the origin of the nucleon sea.Using the same method, the nuclear dependence of the per-nucleon cross section ratio, R pA , of carbon, iron and tungsten versus deuterium studied as a function of x T , p T , andx F are reported. The results for x T are consistent with E772 indicating little nuclear de-I would like to thank Dr. Chuck Brown for his guidance and help. He was always ready for a stimulating physics discussion and never let go of a teachable moment. Working with him was competitive, fun and a great learning experience.My sincere thanks goes to Dr. Kei Nagai for the analysis help he provided. He made my life much easier by helping write, understand, and organize an efficient analysis code. vii I would like to thank Dr. Po-Ju Lin for all the "fun" times at Lab 6 working on repairing and installing the new St 1 drift chamber. Working with 20 micron sense wire was itself difficult but his company made it bearable and fun. I would like to thank Dr. Joshua Rubin for all the inspiring and intellectually stimulating physics discussions. I truly enjoyed our Daddios' diner venting sessions and napkin discussions. I would like to thank Dr. Michelle

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“…x Bj mentioned in the previous section 9 . If the nucleon is built up of different kinds of quark flavors, then the structure functions F 1 (x, Q 2 ) and F 2 (x, Q 2 ) are given by…”

Section: Structure Functions In the Quark-parton Modelmentioning

confidence: 88%

Section: 34mentioning

confidence: 99%

Section: The Birth Of Quarksmentioning

confidence: 99%

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Light Anti-Quark Flavor Asymmetry in the Nucleon Sea and the Nuclear Dependence of Anit-Quarks in Nuclei at the Seaquest Experiment

Tadepalli

2019

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“…Fisicamente, no caso de Wigner, os invariantes são a massa, associada ao quadrado da norma do momento linear, e o spin, associado ao quadrado da norma do vetor de Pauli-Lubanski [4]. Este procedimento seria extendido com êxito na construção do modelo de quarks e glúons com o grupo de calibre (3), cujas classificações de representações permitiram prever a existência de bárions até então desconhecidos e que foram observados experimentalmente [15,16].…”

Section: Capítulo 1 Introduçãounclassified

Simetria conforme e covariância galileana

Melo¹

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Resumo O objetivo desta dissertação é explorar uma versão preliminar de uma formulação covariante para teorias de campos não-relativísticas com simetria conforme. Primeiro, revisamos tal simetria e como se obtém o grupo conforme do espaço de Minkowski. Segundo, revisamos o grupo de Galilei, que é o grupo de simetria da física não-relativística, a covariância e a variedade Galileana. Por fim, baseando-se em resultados da literatura para férmions unitários, apresentamos o grupo conforme da variedade galileana, seus geradores infinitesimais e transformações finitas associadas, tendo os campos escalar e eletromagnético como exemplo.

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“…By using most of the data known about the particle masses, the mass of the CT was predicted(28). Then the Q~ was found(29), and its mass was mthin a few per cent of the calculated value. Still another application of this philosophy was the Rarita and Phillips work (l), where, "by an extremely precise fitting of Regge amplitudes to the ir'^p total and differential cross sections, they were a"ble to predict the rTp elastici6 polarizations' to within a few per cent.…”

mentioning

confidence: 99%

The application of a sum rule to a Regge model for the high energy [pi] N system

Beaupre

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Observation of a Hyperon with Strangeness Minus Three*

Cited by 17 publications

References 0 publications

Light Anti-Quark Flavor Asymmetry in the Nucleon Sea and the Nuclear Dependence of Anit-Quarks in Nuclei at the Seaquest Experiment

Light Anti-Quark Flavor Asymmetry in the Nucleon Sea and the Nuclear Dependence of Anit-Quarks in Nuclei at the Seaquest Experiment

Simetria conforme e covariância galileana

The application of a sum rule to a Regge model for the high energy [pi] N system

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