|
|
| Line 1: |
Line 1: |
| {{Standard model of particle physics}}
| | Human being who wrote the [http://answers.Yahoo.com/search/search_result?p=article&submit-go=Search+Y!+Answers article] is [http://www.google.com/search?q=called+Roberto&btnI=lucky called Roberto] Ledbetter and his wife a lot like it at every bit. His wife and your boyfriend or girlfriend live in Idaho nevertheless he needs to advance because of his relative. In his professional life he is certainly a filing assistant and after that his salary has been recently really fulfilling. To go to karaoke is the thing he loves most of nearly all. He's been working on any website for some time now. Check it down here: http://prometeu.net<br><br>Here is my webpage; clash of clans cheats ([http://prometeu.net click the next webpage]) |
| '''Exotic baryons''' are [[:Category:hypothetical composite particles|hypothetical composite particles]] that are bound states of 4 or more [[quark]]s and additional [[elementary particle]]s. This is to be contrasted with ordinary [[baryon]]s, which are bound states of just 3 quarks. The additional particles may include [[quark]]s, [[antiquark]]s or [[gluon]]s.
| |
| | |
| One such exotic baryon is the [[pentaquark]], which consists of four quarks and an antiquark.<ref>
| |
| {{cite journal
| |
| |author=D. Diakonov, V. Petrov, M. Polyakov
| |
| |year=1997
| |
| |title=Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
| |
| |journal=[[Zeitschrift für Physik A]]
| |
| |volume=359 |pages=305–314
| |
| |doi=10.1007/s002180050406
| |
| |arxiv=hep-ph/9703373
| |
| |bibcode = 1997ZPhyA.359..305D
| |
| |issue=3 }}</ref> Another exotic baryon that consists only of quarks is the H [[dibaryon]],<ref>
| |
| {{cite journal
| |
| |author=G.R. Farrar, G. Zaharijas
| |
| |year=2004
| |
| |title=Nuclear and nucleon transitions of the H di-baryon
| |
| |journal=[[Physical Review D]]
| |
| |volume=70 |pages=014008
| |
| |doi=10.1103/PhysRevD.70.014008
| |
| |arxiv=hep-ph/0308137
| |
| |bibcode = 2004PhRvD..70a4008F }}</ref><ref>
| |
| {{cite journal
| |
| |author=R. Jaffe
| |
| |year=1977
| |
| |title=Perhaps a Stable Dihyperon
| |
| |journal=[[Physical Review Letters]]
| |
| |volume=38 |pages=195
| |
| |doi=10.1103/PhysRevLett.38.195
| |
| |bibcode=1977PhRvL..38..195J
| |
| |issue=5
| |
| }}</ref> which consists of two [[up quark]]s, two [[down quark]]s and two [[strange quark]]s. Unlike the pentaquark, this particle might be long lived or even stable. There have been unconfirmed claims of detections of pentaquarks and dibaryons.<ref>
| |
| {{cite journal
| |
| |author=A.R. Dzierba, C.A. Meyer, A.P. Szczepaniak
| |
| |year=2005
| |
| |title=Reviewing the Evidence for Pentaquarks
| |
| |journal=[[Journal of Physics: Conference Series]]
| |
| |volume=9 |pages=192–204
| |
| |doi=10.1088/1742-6596/9/1/036
| |
| |arxiv = hep-ex/0412077 |bibcode = 2005JPhCS...9..192D }}</ref><ref>
| |
| {{cite journal
| |
| |author=J. Belz ''et al.'' ([[Brookhaven National Laboratory|BNL]] [[E888 experiment|E888 Collaboration]])
| |
| |year=1996
| |
| |title=Search for the Weak Decay of an H Dibaryon
| |
| |journal=[[Physical Review Letters]]
| |
| |volume=76 |pages=3277–3280
| |
| |doi=10.1103/PhysRevLett.76.3277
| |
| |arxiv=hep-ex/9603002
| |
| |bibcode=1996PhRvL..76.3277B
| |
| |pmid=10060926
| |
| |issue=18
| |
| }}</ref>
| |
| | |
| Several types of exotic baryons that require physics beyond the [[Standard Model]] have been conjectured in order to explain specific experimental anomalies. There is no independent experimental evidence for any of these particles. One example is [[supersymmetry|supersymmetric]] [[R-baryon]]s,<ref>
| |
| {{cite journal
| |
| |author=G.R. Farrar
| |
| |year=1996
| |
| |title=Detecting Gluino-Containing Hadrons
| |
| |journal=[[Physical Review Letters]]
| |
| |volume=76 |pages=4111–4114
| |
| |doi=10.1103/PhysRevLett.76.4111
| |
| |arxiv=hep-ph/9603271
| |
| |bibcode=1996PhRvL..76.4111F
| |
| |pmid=10061204
| |
| |issue=22
| |
| }}</ref> which are bound states of 3 quarks and a [[gluino]]. The lightest R-baryon is denoted as <math>\mbox{S}^{0}</math> and consists of an up quark, a down quark, a strange quark and a gluino. This particle is expected to be long lived or stable and has been invoked to explain ultra-high-energy cosmic rays.<ref>
| |
| {{cite journal
| |
| |author=D. Chung, G.R. Farrar, E.W. Kolb
| |
| |year=1998
| |
| |title=Are ultra-high-energy cosmic rays signals of supersymmetry?
| |
| |journal=[[Physical Review D]]
| |
| |volume=57 |pages=4606
| |
| |doi=10.1103/PhysRevD.57.4606
| |
| |arxiv=astro-ph/9707036
| |
| |bibcode = 1998PhRvD..57.4606C
| |
| |issue=8 }}</ref><ref>
| |
| {{cite journal
| |
| |author=I.F.M. Albuquerque, G. Farrar, E.W. Kolb
| |
| |year=1999
| |
| |title=Exotic massive hadrons and ultra-high-energy cosmic rays
| |
| |journal=[[Physical Review D]]
| |
| |volume=59 |pages=015021
| |
| |doi=10.1103/PhysRevD.59.015021
| |
| |arxiv=hep-ph/9805288
| |
| |bibcode = 1999PhRvD..59a5021A }}</ref> Stable exotic baryons are also candidates for [[SIMP|strongly interacting dark matter]].
| |
| | |
| It has been speculated by [[futurologist]] [[Ray Kurzweil]] that by the end of the 21st century it might be possible by using [[femtotechnology]] to create new [[chemical element]]s composed of exotic baryons that would eventually constitute a new [[periodic table of elements]] in which the elements would have completely different properties than the regular chemical elements.<ref>[[Ray Kurzweil|Kurzweil, Ray]] ''[[The Age of Spiritual Machines]]'' 1999</ref>
| |
| | |
| ==References==
| |
| {{reflist}}
| |
| | |
| {{particles}}
| |
| | |
| [[Category:Baryons]]
| |
| [[Category:Hypothetical composite particles]]
| |
Human being who wrote the article is called Roberto Ledbetter and his wife a lot like it at every bit. His wife and your boyfriend or girlfriend live in Idaho nevertheless he needs to advance because of his relative. In his professional life he is certainly a filing assistant and after that his salary has been recently really fulfilling. To go to karaoke is the thing he loves most of nearly all. He's been working on any website for some time now. Check it down here: http://prometeu.net
Here is my webpage; clash of clans cheats (click the next webpage)