{"title":"在未来的超级头魅力设施中，能否通过单$π^0$搜索探测到毫卡？","authors":"Yu Zhang","doi":"arxiv-2409.08129","DOIUrl":null,"url":null,"abstract":"We propose a new channel to search for millicharged particles at the future\nSuper Tau Charm Facility (STCF) via mono-$\\pi^0$ signature. For the first time,\nwe compute the mono-$\\pi^0$ signal events at the future STCF due to\nmillicharged particle production, as well as due to standard model\nirreducible/reducible backgrounds. By utilizing the assumed 20 ab$^{-1}$\nluminosity for each running energy with $\\sqrt{s}= 2$ GeV, 4 GeV and 7 GeV, we\nderive the corresponding upper limits on millicharge, respectively. Via\nmono-$\\pi^0$ searches at the future STCF with $\\sqrt{s}=2$ GeV, the upper\nlimits on millicharge can be improved than ArgoNeuT when the mass of\nmillicharged particle is less than about 500 MeV, but are not very competitive\ncompared to a latest derivation from a past BEBC experiment and a new SENSEI\nexperiment. Regardless, the mono-$\\pi^0$ searches could be an important\ncomplement to investigate the invisible particles, such as dark matter.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Can millicharge be probed at future Super Tau Charm Facility via mono-$π^0$ searches?\",\"authors\":\"Yu Zhang\",\"doi\":\"arxiv-2409.08129\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We propose a new channel to search for millicharged particles at the future\\nSuper Tau Charm Facility (STCF) via mono-$\\\\pi^0$ signature. For the first time,\\nwe compute the mono-$\\\\pi^0$ signal events at the future STCF due to\\nmillicharged particle production, as well as due to standard model\\nirreducible/reducible backgrounds. By utilizing the assumed 20 ab$^{-1}$\\nluminosity for each running energy with $\\\\sqrt{s}= 2$ GeV, 4 GeV and 7 GeV, we\\nderive the corresponding upper limits on millicharge, respectively. Via\\nmono-$\\\\pi^0$ searches at the future STCF with $\\\\sqrt{s}=2$ GeV, the upper\\nlimits on millicharge can be improved than ArgoNeuT when the mass of\\nmillicharged particle is less than about 500 MeV, but are not very competitive\\ncompared to a latest derivation from a past BEBC experiment and a new SENSEI\\nexperiment. Regardless, the mono-$\\\\pi^0$ searches could be an important\\ncomplement to investigate the invisible particles, such as dark matter.\",\"PeriodicalId\":501067,\"journal\":{\"name\":\"arXiv - PHYS - High Energy Physics - Phenomenology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - High Energy Physics - Phenomenology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.08129\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - High Energy Physics - Phenomenology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.08129","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Can millicharge be probed at future Super Tau Charm Facility via mono-$π^0$ searches?
We propose a new channel to search for millicharged particles at the future
Super Tau Charm Facility (STCF) via mono-$\pi^0$ signature. For the first time,
we compute the mono-$\pi^0$ signal events at the future STCF due to
millicharged particle production, as well as due to standard model
irreducible/reducible backgrounds. By utilizing the assumed 20 ab$^{-1}$
luminosity for each running energy with $\sqrt{s}= 2$ GeV, 4 GeV and 7 GeV, we
derive the corresponding upper limits on millicharge, respectively. Via
mono-$\pi^0$ searches at the future STCF with $\sqrt{s}=2$ GeV, the upper
limits on millicharge can be improved than ArgoNeuT when the mass of
millicharged particle is less than about 500 MeV, but are not very competitive
compared to a latest derivation from a past BEBC experiment and a new SENSEI
experiment. Regardless, the mono-$\pi^0$ searches could be an important
complement to investigate the invisible particles, such as dark matter.
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