{"title":"$\\sqrt{s} = 1.96$ TeV下$p\\bar p$相互作用中的双部子散射","authors":"O. Gogota","doi":"10.1393/NCC/I2016-16333-7","DOIUrl":null,"url":null,"abstract":"We present the observation of doubly produced $$J / \\psi$$ mesons as an example of processes containing a substantial fraction of double parton scattering. Measurements of the production cross sections for singly and doubly-produced $$J/\\psi$$ mesons were done with the D0 detector at Fermilab in $$p\\bar{p}$$ collisions at $$\\sqrt{s}$$ = 1.96 TeV with an integrated luminosity of 8.1 fb$$^{-1}$$. For the first time, the double $$J / \\psi$$ production cross section is separated into two parts: contributions from both single and double parton scattering. Lastly, this separation allowed us to determine the effective cross section σ eff, a parameter related to the parton spatial density inside the hadron.","PeriodicalId":81495,"journal":{"name":"Il Nuovo cimento della Societa italiana di fisica. C","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2016-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Double parton scattering in $p\\\\bar p$ interactions at $\\\\sqrt{s} = 1.96$ TeV\",\"authors\":\"O. Gogota\",\"doi\":\"10.1393/NCC/I2016-16333-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We present the observation of doubly produced $$J / \\\\psi$$ mesons as an example of processes containing a substantial fraction of double parton scattering. Measurements of the production cross sections for singly and doubly-produced $$J/\\\\psi$$ mesons were done with the D0 detector at Fermilab in $$p\\\\bar{p}$$ collisions at $$\\\\sqrt{s}$$ = 1.96 TeV with an integrated luminosity of 8.1 fb$$^{-1}$$. For the first time, the double $$J / \\\\psi$$ production cross section is separated into two parts: contributions from both single and double parton scattering. Lastly, this separation allowed us to determine the effective cross section σ eff, a parameter related to the parton spatial density inside the hadron.\",\"PeriodicalId\":81495,\"journal\":{\"name\":\"Il Nuovo cimento della Societa italiana di fisica. C\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-12-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Il Nuovo cimento della Societa italiana di fisica. C\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1393/NCC/I2016-16333-7\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Il Nuovo cimento della Societa italiana di fisica. C","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1393/NCC/I2016-16333-7","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Double parton scattering in $p\bar p$ interactions at $\sqrt{s} = 1.96$ TeV
We present the observation of doubly produced $$J / \psi$$ mesons as an example of processes containing a substantial fraction of double parton scattering. Measurements of the production cross sections for singly and doubly-produced $$J/\psi$$ mesons were done with the D0 detector at Fermilab in $$p\bar{p}$$ collisions at $$\sqrt{s}$$ = 1.96 TeV with an integrated luminosity of 8.1 fb$$^{-1}$$. For the first time, the double $$J / \psi$$ production cross section is separated into two parts: contributions from both single and double parton scattering. Lastly, this separation allowed us to determine the effective cross section σ eff, a parameter related to the parton spatial density inside the hadron.
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