- Pion
dablink This article is about the subatomic particles. For the self propelled gun, see 2S7 Pion . Infobox Particle bgcolour name Pion image Image Quark structure pion.svg 250px caption The quark structure of the pion. num types 3 composition SubatomicParticle Pion SubatomicParticle Up quark SubatomicParticle ... or SubatomicParticle Down quark SubatomicParticle Down antiquark br SubatomicParticle Pion ... Lattes , Giuseppe Occhialini 1947 and Cecil Powell symbol SubatomicParticle Pion , SubatomicParticle Pion0 , and SubatomicParticle Pion mass SubatomicParticle Pion val 139.57018 35 ul MeV c2 br SubatomicParticle Pion0 val 134.9766 6 u MeV c2 decay time SubatomicParticle Pion val 2.6 e 8 ul s , SubatomicParticle Pion0 val 8.4 e 17 u s decay particle electric charge SubatomicParticle Pion 1 Elementary charge e br SubatomicParticle Pion0 0 e br SubatomicParticle Pion &minus 1 e color charge spin 0 parity 1 num spin states In particle physics , a pion short for pi meson , denoted with SubatomicParticle Pion is any of three subatomic particle s SubatomicParticle Pion0 , SubatomicParticle Pion , and SubatomicParticle Pion . Pions are the lightest meson s and they play an important role in explaining ... s. In the quark model , an up quark and an anti down quark make up a SubatomicParticle Pion , whereas a down quark and an anti up quark make up the SubatomicParticle Pion , and these are the antiparticle ... pion has isospin I 1 and third component Gell Mann Nishijima formula isospin equal to its charge I sub z sub 1, 0 or 1 . Charged pion decays Image PiPlus muon decay.png right thumb 300px Feynman diagram of the dominating leptonic pion decay. The SubatomicParticle Pion mesons have a mass of val 139.6 ul MeV c2 and a mean life time of val 2.6 e 8 ul s . They decay due to the weak force weak interaction . The primary decay mode of a pion, with probability 0.999877, is a purely lepton ic decay into a anti muon and a muon neutrino SubatomicParticle Pion SubatomicParticle ... more details
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- 2S7 Pion
Other uses2 M 1975 Infobox Weapon name 2S7 Pion image Image Armata samobiezna 2S7 Pion.jpg 350px caption origin USSR type Self propelled artillery is vehicle yes crew 7 length convert 10.5 m ftin abbr on width convert 3.38 m ftin abbr on height convert 3 m ftin abbr on weight 46.5 tons suspension torsion bar speed convert 50 km h mph abbr on vehicle range Road convert 650 km mi abbr on primary armament 203 mm 2A44 gun secondary armament armour 10mm max. engine V 46 I V12 turbocharged Diesel engine diesel engine power 840 hp pw ratio The 2S7 Pion peony or Malka is a Soviet self propelled artillery self propelled gun. 2S7 is its GRAU designation. It was identified for the first time in 1975 in the Soviet army and so was called M 1975 by NATO the 2S4 Tyulpan also received the M 1975 designation , whereas its official designation is SO 203 2S7 . Its design is based on a T 80 chassis carrying an externally mounted 2A44 203 mm gun on the hull rear. It takes the crew of 7 men 5 6 minutes to come into action and 3 5 minutes to come out of action. It carries 4 203 mm projectiles for immediate use while the remainder is carried by another vehicle and it is capable of firing nuclear ... m by using RAPs Rocket Assisted Projectiles . The Pion has also been the most powerful conventional artillery piece since entering service in 1983. Variants 2S7 Pion 2S7M Mialka An improved variant ... 1564&linkname 2s7m Pion Self Propelled Gun ref SVK unknown number, at least one, used for testing ... POL Withdrawn from service in 2006. Image 2S7 Pion.jpg thumb left 2S7 Pion at Museum of Technics, Arkhangelskoye, Moscow Region br style clear both Popular Culture The 2S7 Pion appears in in the video ... howitzer External links commons 2S7 Pion http www.globalsecurity.org military world russia 2s7.htm Global Security page PostWWIISovietAFVS DEFAULTSORT 2s7 Pion Category Self propelled artillery of the Soviet ... 2S7 Pion de 2S7 hr 2S7 Pion it 203 mm 2S7 Pion ka 2 7 ja 2S7 203mm no 2S7 pl 2S7 Pion ru ... more details
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- Pion decay constant
In particle physics , the pion decay constant is the square root of the coefficient in front of the kinetic term for the pion in the chiral perturbation theory low energy effective action . It is dimensionally an energy scale and it determines the strength of the chiral symmetry breaking . The values are math f pi pm 130.7 pm 0.1 pm 0.36 mbox MeV math math f pi 0 130 pm 5 mbox MeV math Beware There are several conventions which differ by powers of math scriptstyle sqrt 2 math . The textbook by Weinberg uses the value 184 MeV. The textbook by Peskin and Schroeder uses the value 93 MeV. References http stacks.iop.org JPhysG 33 1 Particle Data Group W. M. Yao et al. , J. Phys. G 33, 1 2006 . cite book author Griffiths, David J. title Introduction to Elementary Particles publisher Wiley, John & Sons, Inc year 1987 isbn 0 471 60386 4 External links http pdg.lbl.gov Particle Data Group & WWW edition of Review of Particle Physics Category Quantum chromodynamics particle stub ... more details
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- Semileptonic decay
Unreferenced stub auto yes date December 2009 In particle physics the semileptonic decay of a hadron refers to a decay through the weak interaction in which one lepton and the corresponding neutrino is produced in addition to one or more hadron s. An example of a semileptonic decay is SubatomicParticle Kaon0 &rarr SubatomicParticle Electron SubatomicParticle Electron antineutrino SubatomicParticle Pion This is to be contrasted with purely hadronic decays, such as SubatomicParticle Kaon0 SubatomicParticle Pion SubatomicParticle Pion , which are also mediated by the weak force. Semileptonic decays of neutral kaon s have been used to study kaon Oscillation kaon oscillations . See also Kaon Pion CP violation CPT symmetry DEFAULTSORT Semileptonic Decay Category Particle physics Category Electroweak theory hu R szben leptonikus boml s Particle stub ... more details
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- Posterior ischemic optic neuropathy
ICD10 ICD10 H 47 0 h 46 ICD9 ICD9 377.41 MeshID D018917 Posterior Ischemic Optic Neuropathy PION ... ischemic optic neuropathy AION is distinguished from PION by the fact that AION occurs spontaneously ... PION is a watershed infarction of the optic nerve that may cause either unilateral or, more often, bilateral blindness. PION typically occurs in two categories of patients patients who have undergone ... the blood pressure is also low. This combination can produce shock, and PION has sometimes been ... more frequently with spinal surgeries 28 . Diagnosis The diagnosis of PION is often difficult ... smoking are most susceptible to PION as they have a compromised system of blood vessel autoregulation ... pressure are administered within hours 29 . PION In Depth Introduction Posterior ischemic optic neuropathy PION is a rare but devastating cause of vision loss. PION occurs when oxygen delivery to the posterior ... infarct. There are two types of PION, which result in optic nerve ischemia via separate mechanisms ... to tissues, and may lead to cell death. Arteritic PION A PION Arteritic PION is an autoimmune disease. The risk of A PION increases ten times per decade of life, which means that the elderly are at the highest risk. A PION causes severe vision loss in rapid sequence from one eye to the next. Early treatment is essential to halt the progression of vision loss. Perioperative PION a.k.a. surgical, postoperative, or Shock circulatory shock induced PION. Profound vision loss is discovered upon ... procedure duration, and facial swelling. Perioperative PION usually results in severe, irreversible, bilateral vision loss. PION is so rare that it is hard to calculate its incidence. PION occurs ... PION estimates an incidence of 0.028 during spinal surgeries 28 . However, PION is exceedingly rare after most other surgical procedures. Another review did not find a single case of PION out of 60,965 patients who underwent general anesthesia 3 . Our knowledge of PION s incidence would be improved ... more details
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- Young Pioneers (Norway)
Young Pioneers lang no Unge Pionerer , UP was a socialist children s organization in Norway . It was founded in 1952, as a continuation of the interbellum Pioneer League of Norway . Initially the organization was firmly connected to the Communist Party of Norway , but in the 1970s it became more independent as parents affiliated with the Socialist Left Party Norway Socialist Left Party brought their children to the organization. ref name pion http www.leksikon.org art.php?n 2651 , http www.stortinget.no lund 84 85.htm ref On May 1, 1976, UP began publishing Ung R st . ref name pion International affiliation UP was the Norwegian affiliate of International Committee of Children s and Adolescents Movements CIMEA , and participated in international and Nordic pioneer camps. ref name pion References reflist Category 1952 establishments Category Organisations based in Norway Category Pioneer Movement norway org stub ... more details
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- M1975
M 1975 may refer to 2S4 Tyulpan , a Soviet self propelled 240mm mortar 2S7 Pion , a Soviet self propelled 203mm gun M 1975, a North Korean self propelled 130mm gun 130 mm towed field gun M1954 M 46 Type 59 1 gun on a locally built chassis Letter NumberCombDisambig ... more details
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- Perception (journal)
italictitle Infobox Journal discipline Psychology , Perception website http www.perceptionweb.com publisher Pion publisher Pion country UK abbreviation history 1972 present impact 1.293 impact year 2010 ISSN 0301 0066 eISSN 1468 4233 Perception is a Peer review peer reviewed scientific journal specialising in the psychology of visual perception vision and perception . It is available in print form and online. It publishes primary research from any discipline within the sensory sciences. The journal is indexed in PubMed . Category Psychology journals Category Vision Category Publications established in 1972 ... more details
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- Z(4430)
Z 4430 is a meson ic resonance particle physics resonance discovered by the Belle experiment . ref cite journal last1 Choi first1 S. K. coauthors et al. Belle experiment Belle Collaboration title Observation of a resonance like structure in the Subatomic particle Pion &Psi &prime mass distribution in exclusive B&rarr K Subatomic particle Pion &Psi &prime decays year 2007 doi 10.1103 PhysRevLett.100.142001 journal Physical Review Letters volume 100 issue 14 arxiv 0708.1790 bibcode 2008PhRvL.100n2001C ref ref cite press url http www.kek.jp intra e press 2007 BellePress11e.html title Belle Discovers a New Type of Meson publisher KEK year 2007 accessdate 2009 06 20 ref . It has a mass of val 4430 ul MeV c2 . This resonance has not yet been seen in other experiments. Unlike the X 3872 meson discovered by the same experiment, this particle has a charge and is a tetraquark meson candidate. However, its quantum numbers seem to be those of a pion , which is inconsistent with the tetraquark interpretation. References references Category Particle physics Category Subatomic particles Category Mesons particle stub ... more details
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- Miss Pittsburgh
feet. ref name pion The main body of the plane was based on metal tubing covered with cotton cloth. ref name pion ref name lloyd Kristin B. Lloyd, http oha.alexandriava.gov oha main haq pdfs haqwin97.pdf ... were made of spruce . ref name pion Waco 9 had no radio or brakes. ref name pion Miss Pittsburgh could transport up to 800 pounds at a speed reaching 100 miles per hour. ref name pion It usually operated at a flight altitude of between 1,000 to 5,000 feet. ref name pion History Miss Pittsburgh ... the airplane was being used for advertising in 1960s. ref name pion http www.pitairport.com OX 5 ... AIRPORT ref Eventually is broke down in New York . ref name pion In 1993, the OX 5 Pioneers located the plane in the Rhinebeck NY Aerodrome. ref name pion With the support of the Pittsburgh Institute of Aeronautics the group raised money to have the airplane returned to Pittsburgh. ref name pion ... pion Notes a Note label a a none To be clear, Miss Pittsburgh was the first airplane to deliver airmail ... more details
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- Chiral symmetry breaking
Unreferenced date December 2008 In particle physics , chiral symmetry breaking is an example of spontaneous symmetry breaking affecting the chiral symmetry of gauge theory such as Quantum Chromodynamics . The origin may be described as a fermion condensate vacuum condensate of bilinear expressions involving the fermion s . The pion decay constant may be viewed as a measure of the magnitude of the chiral symmetry breaking. Category Quantum chromodynamics phys stub ... more details
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- Panofsky
Panofsky may refer to one of the following People Erwin Panofsky , an art historian Wolfgang K. H. Panofsky , a German American physicist, a son of Erwin Panofsky Other Panofsky Prize awarded in the field of particle physics Panofsky Ratio, a quantity measured in pion nucleon interactions, named after Wolfgang K. H. Panofsky disambig Category Surnames de Panofsky hu Panofsky egy rtelm s t lap ... more details
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- File:Primakoff effect diagram.GIF
Summary Information Description Feynman diagram representing the Primakoff effect , namely the resonant production of neutral mesons pion in this case when a high energy photon interacts with a nucleus q . Source self made Date 2008 01 21 Location Fermilab Author Georgios Choudalakis Permission other versions Licensing PD self date January 2008 Copy to Wikimedia Commons bot Fbot priority true ... more details
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- 2S7
2S7 can refer to 2S7 Pion , a Soviet Russian self propelled gun 2S7, the FAA location identifier for Chiloquin State Airport Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. Letter NumberCombDisambig ... more details
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- Pión District
Infobox district See Template Infobox district for additional fields and descriptions name Pion native name native name lang es ISO 639 2 code e.g. es for Spanish settlement type Districts of Peru District image skyline image alt image caption image flag flag alt image shield shield alt nickname image map mapsize frameless map alt map caption Location of Pion in the Chota Province Chota province latd latm lats latNS longd longm longs longEW coor pinpoint coordinates type region PE type adm3rd coordinates display inline,title coordinates footnotes coordinates region PE subdivision type List of sovereign states Country subdivision name flag Peru subdivision type1 Regions of Peru Region subdivision name1 Cajamarca Region Cajamarca subdivision type2 Provinces of Peru Province subdivision name2 Chota Province Chota parts type Subnational entity Subdivisions parts style para p1 established title Founded established date January 2, 1857 seat type Capital political Capital seat Pion leader party leader title Mayor leader name Jorge Cieza Alarcon unit pref Metric or US or UK area footnotes area total km2 141.05 area note elevation footnotes elevation m 1600 population footnotes population total 1847 population as of Peru 2005 Census 2005 census population density km2 auto population note timezone1 Time in Peru PET utc offset1 5 blank name sec1 UBIGEO blank info sec1 060414 website footnotes Pion District is one of nineteen Districts of Peru districts of the province Chota Province Chota in Peru . ref es icon Instituto Nacional de Estad stica e Inform tica . http desa.inei.gob.pe mapas bid Banco de Informaci n Distrital . Retrieved April 11, 2008. ref References Reflist Districts of Chota Province coord missing Peru Cajamarca geo stub es Distrito de Pi n pt Pi n distrito qu Pi n distritu ... more details
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- Eta meson
in pion nucleon collisions at the Bevatron in 1961. The difference between the mass of the and that of the ... more details
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- Environment and Planning
title Environment and Planning D publisher Pion accessdate 2009 07 19 ref Of the four journals, Environment ... more details
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- Allosmaitia strophius
italictitle Taxobox name Allosmaitia strophius image Strophius Hairstreak Allosmaitia strophius .jpg image caption regnum Animal ia phylum Arthropod a classis Insect a ordo Lepidoptera familia Lycaenidae tribus Eumaeini genus Allosmaitia species A. strophius binomial Allosmaitia strophius binomial authority Godart, 1824 synonyms Polyommatus strophius small Godart, 1824 small Thecla scoteia small Hewitson, 1877 small Thecla pion small Godman & Salvin, 1887 small Allosmaitia pion The Strophius Hairstreak Allosmaitia strophius is a butterfly of the Lycaenidae family. It is found from southern Brazil , north to Sinaloa , Mexico . Strays can be found as far north as Texas . The wingspan is 22 32 mm. Adults are on wing year round in Central America. In Texas, a stray was reported in November The larvae feed on the flowers of Malpighia species. External links http www.nearctica.com butter plate6 Astroph.htm Nearctica Category Lycaenidae Category Theclinae Theclinae stub ru Allosmaitia strophius ... more details
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- Paeonia peregrina
italic title taxobox name Paeonia peregrina image SeedsPaeoniaperegrina.jpg image caption seeds regnum Plant ae unranked divisio Angiosperms unranked classis Eudicots unranked ordo Core eudicots ordo Saxifragales familia Paeoniaceae genus Peony Paeonia species P. peregrina binomial Paeonia peregrina binomial authority Mill. Paeonia peregrina is a herbaceous plant species native from Southeastern Europe and Western Asia in Turkey . Category Peonies peregrina Category Flora of Western Asia Category Flora of Europe Category Flora of Turkey saxifragales stub az Dekorativ pion bg ro Bujor rom nesc ... more details
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- Totemism ? Etnica Remixed 1996?2006
orphan date June 2010 Totemism is a Goa Trance album by the Psychedelic Trance Italian group Etnica released in 2007. Track listing Dominator Beacon Mix by Pion 7 34 Automatik Colors Mix by PTX 8 21 Totemism Totemized Mix by Etnica VS Arkanoydz 7 26 Microdrive Reminder Mix by Bamboo Forest 7 19 Triptonite Tsunami Mix by Wizzy Noise 9 50 Virmana Back 2 old School Mix by Dickster 8 18 The Object Lost Planet Mix by Arkanoydz 6 55 Triptonite Ethilic Eden Mix by Aes Dana and Nova 10 40 Category 2007 albums Category Etnica albums ... more details
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- Onset of deconfinement
Image Kpip 4pi data prc.jpg thumb 300px The strange matter horn . The ratio of mean multiplicities of positively charged kaon s and pion s as a function of collision energy in collisions of two lead atomic nucleus nuclei and proton proton interactions. The onset of deconfinement refers to the beginning of the creation of color confinement deconfined phase matter states of strong interaction strongly interacting QCD matter matter produced in heavy ion nucleus nucleus collisions with increasing collision energy a quark gluon plasma . The onset of deconfinement was predicted by Marek Gazdzicki and Mark I. Gorenstein to be located in the low energy range of the Super Proton Synchrotron SPS at the CERN European Organization for Nuclear Research CERN . ref name smes cite journal author M. Gazdzicki, M.I. Gorenstein year 1999 title On the early stage of nucleus nucleus collisions url http th www.if.uj.edu.pl acta vol30 abs v30p2705.htm journal Acta Physica Polonica B volume 30 pages 2705 doi arxiv hep ph 9803462 bibcode 1999AcPPB..30.2705G last2 Gorenstein ref These predictions have been confirmed by the NA49 experiment at the CERN SPS within the energy scan programme. ref name evidence cite journal author C. Alt et al. NA49 experiment NA49 collaboration year 2008 title Pion and kaon production in central Pb Pb collisions at 20 A and 30 A GeV Evidence for the onset of deconfinement journal Physical Review C volume 77 pages 024903 doi 10.1103 PhysRevC.77.024903 arxiv 0710.0118 bibcode 2008PhRvC..77b4903A issue 2 ref The most famous of these is the horn dubbed the strange matter horn in the ratio of mean multiplicities of positively charged kaon s and pion s observed in collisions of two lead atomic nucleus nuclei at the low energies of the SPS. The horn is not seen in proton proton interactions. References reflist External links http na49info.web.cern.ch na49info Description of the NA49 experiment Category Quark matter ... more details
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- Hyperon
SubatomicParticle Lambda0 SubatomicParticle Proton SubatomicParticle Pion SubatomicParticle Lambda0 ... Pion SubatomicParticle Sigma0 SubatomicParticle Lambda0 SubatomicParticle Photon SubatomicParticle Sigma SubatomicParticle Neutron0 SubatomicParticle Pion decay SubatomicParticle Xi0 SubatomicParticle ... Pion SubatomicParticle Xi particles are also known as cascade hyperons, since they go through ... a SubatomicParticle Pion . sup sup decay The SubatomicParticle Omega has a baryon number ... Xi0 SubatomicParticle Pion SubatomicParticle Xi0 SubatomicParticle Lambda0 SubatomicParticle Pion0 SubatomicParticle Lambda0 SubatomicParticle Proton SubatomicParticle Pion Hyperon research The first ... SubatomicParticle link yes Proton SubatomicParticle link yes Pion br or nowrap SubatomicParticle ... link yes Pion Sigma baryon Sigma ref name PDGSigma0 cite web url http pdg.lbl.gov 2007 listings ... 1 0 0 val 1.479 0.011 e 10 nowrap SubatomicParticle link yes Neutron0 SubatomicParticle link yes Pion ... 1 &minus 1 0 0 nowrap SubatomicParticle Lambda SubatomicParticle Pion or br nowrap SubatomicParticle Sigma SubatomicParticle Pion Sigma baryon Sigma resonance ref name PDGSigma 1385 SubatomicParticle ... Lambda SubatomicParticle Pion or br nowrap SubatomicParticle Sigma SubatomicParticle Pion ... Pion or br nowrap SubatomicParticle Sigma SubatomicParticle Pion Xi baryon Xi ref name ... link yes Lambda0 SubatomicParticle link yes Pion Xi baryon Xi resonance ref name PDGXi 1530 cite ... Xi SubatomicParticle link yes Pion Xi baryon Xi resonance ref name PDGXi 1530 SubatomicParticle link ... SubatomicParticle link yes Xi SubatomicParticle link yes Pion Omega baryon Omega ref name PDGOmega ... yes Xi0 SubatomicParticle link yes Pion or br nowrap SubatomicParticle link yes Xi SubatomicParticle ... more details
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- Roper resonance
nucleon plus a pion , nucleon plus two pions , or Delta baryon &Delta plus a pion . References Evidence for a P sub 11 sub Pion Nucleon Resonance at 556 MeV , L. D. Roper, Phys. Rev. Letters 12, 340 1964 http arts.bev.net roperldavid roperres.htm The Development of Pion Nucleon Scattering ... more details
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- Pseudoscalar meson
. Examples SubatomicParticle link yes Pion , SubatomicParticle link yes Eta , SubatomicParticle link ... more details
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- Pionium
Pionium is an exotic atom consisting of one SubatomicParticle link yes Pion and one SubatomicParticle link yes Pion meson s. It can be created, for instance, by interaction of a proton beam accelerated by a particle accelerator and a target atomic nucleus nucleus . Pionium has a short lifetime, predicted by Chirality physics chiral perturbation theory quantum mechanics perturbation theory to be val 2.89 e 15 u s . It decays mainly into two SubatomicParticle link yes Pion0 mesons , and to a smaller extent into two photons. Pionium is currently under investigation at CERN to measure its lifetime. The DIRAC collaboration was able to detect more than 5000 pionium decays from a total of val 6.4 e 8 events, which will allow the lifetime to be determined to within statistical errors of 15 . The team hopes to reduce this error to 10 in the future. ref name hep ph 9808407 cite arxiv last1 Schacher first1 J. year 1998 title DIRAC Experiment at CERN Lifetime Measurement of Pionium class hep ph eprint hep ph 9808407 ref In 2005, the NA48 experiment NA48 2 collaboration at CERN published an evidence for pionium production and decay in decays of charged kaon s, studying mass spectra of daughter pion pairs in the events with three pions in the final state math K pm to pi pm pi pi atom to pi pm pi 0 pi 0 math . ref name hep ex 0511056 cite journal last1 Batley first1 J. R. coauthors et al. NA48 2 Collaboration title Observation of a cusp like structure in the sup 0 sup sup 0 sup invariant mass distribution from K sup sup sup sup sup 0 sup sup 0 sup decay and determination of the scattering lengths year 2005 journal Physics Letters B volume 633 issue 2 3 pages 173 182 arxiv hep ex 0511056 bibcode 2006PhLB..633..173N doi 10.1016 j.physletb.2005.11.087 ref The possibility to measure pionium characteristics is being investigated. ref name hep ex 0510004 cite arxiv last1 Madigozhin first D. year 2005 title Pion scattering lengths from NA48 class hep ex eprint hep ... more details
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