{"title":"在未来μ介子对撞机上探测反常γγ耦合","authors":"H. Amarkhail , S.C. İnan , A.V. Kisselev","doi":"10.1016/j.nuclphysb.2024.116592","DOIUrl":null,"url":null,"abstract":"<div><p>We have studied anomalous four-photon couplings in the <span><math><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup><mo>→</mo><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><mi>γ</mi><mi>γ</mi><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> scattering at a future muon collider. The collision energies of 3 TeV, 14 TeV, and 100 TeV are addressed. Both differential and total cross sections versus invariant mass of the outgoing photons are calculated. The best 95% C.L. exclusion bounds on anomalous couplings are obtained to be <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mn>2.23</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>8</mn></mrow></msup></math></span> TeV<sup>−4</sup> and <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><mn>4.22</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>8</mn></mrow></msup></math></span> TeV<sup>−4</sup>. They correspond to the muon collision energy of 100 TeV. The partial-wave unitary constraints on <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> are examined. We have demonstrated that the unitarity is not violated in a region of the anomalous couplings obtained in the present paper.</p></div>","PeriodicalId":54712,"journal":{"name":"Nuclear Physics B","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0550321324001585/pdfft?md5=c306213f374a6f6f455e493041a8b6f0&pid=1-s2.0-S0550321324001585-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Probing anomalous γγγγ couplings at a future muon collider\",\"authors\":\"H. Amarkhail , S.C. İnan , A.V. Kisselev\",\"doi\":\"10.1016/j.nuclphysb.2024.116592\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We have studied anomalous four-photon couplings in the <span><math><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup><mo>→</mo><msup><mrow><mi>μ</mi></mrow><mrow><mo>+</mo></mrow></msup><mi>γ</mi><mi>γ</mi><msup><mrow><mi>μ</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> scattering at a future muon collider. The collision energies of 3 TeV, 14 TeV, and 100 TeV are addressed. Both differential and total cross sections versus invariant mass of the outgoing photons are calculated. The best 95% C.L. exclusion bounds on anomalous couplings are obtained to be <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mn>2.23</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>8</mn></mrow></msup></math></span> TeV<sup>−4</sup> and <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><mn>4.22</mn><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>8</mn></mrow></msup></math></span> TeV<sup>−4</sup>. They correspond to the muon collision energy of 100 TeV. The partial-wave unitary constraints on <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>g</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> are examined. We have demonstrated that the unitarity is not violated in a region of the anomalous couplings obtained in the present paper.</p></div>\",\"PeriodicalId\":54712,\"journal\":{\"name\":\"Nuclear Physics B\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0550321324001585/pdfft?md5=c306213f374a6f6f455e493041a8b6f0&pid=1-s2.0-S0550321324001585-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Physics B\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0550321324001585\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, PARTICLES & FIELDS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Physics B","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0550321324001585","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, PARTICLES & FIELDS","Score":null,"Total":0}
引用次数: 0
摘要
我们在未来的μ子对撞机上研究了μ+μ-→μ+γγμ-散射中的反常四光子耦合。对撞能量分别为 3 TeV、14 TeV 和 100 TeV。计算了出射光子的微分截面和总截面与不变质量的关系。得到的关于反常耦合的最佳95% C.L.排除边界为g1=2.23×10-8 TeV-4和g2=4.22×10-8 TeV-4。它们对应于 100 TeV 的μ介子碰撞能量。我们研究了对 g1 和 g2 的部分波单元约束。我们已经证明,在本文得到的反常耦合区域内,单元性并没有被违反。
Probing anomalous γγγγ couplings at a future muon collider
We have studied anomalous four-photon couplings in the scattering at a future muon collider. The collision energies of 3 TeV, 14 TeV, and 100 TeV are addressed. Both differential and total cross sections versus invariant mass of the outgoing photons are calculated. The best 95% C.L. exclusion bounds on anomalous couplings are obtained to be TeV−4 and TeV−4. They correspond to the muon collision energy of 100 TeV. The partial-wave unitary constraints on and are examined. We have demonstrated that the unitarity is not violated in a region of the anomalous couplings obtained in the present paper.
期刊介绍:
Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.