通过Bremsstrahlung辐射搜索低质量暗物质和超级速度的Migdal效应

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通过Bremsstrahlung辐射搜索低质量暗物质和超级速度的Migdal效应

A Search for Low-mass Dark Matter via Bremsstrahlung Radiation and the Migdal Effect in SuperCDMS

论文作者

SuperCDMS Collaboration, Al-Bakry, Musaab, Alkhatib, Imran, Amaral, Dorian Praia do, Aralis, Taylor, Aramaki, Tsuguo, Arnquist, Isaac, Langroudy, Iman Ataee, Azadbakht, Elham, Banik, Samir, Bathurst, Corey, Bauer, Dan, Bezerra, Lucas, Bhattacharyya, Rik, Brink, Paul, Bunker, Ray, Cabrera, Blas, Calkins, Robert, Cameron, Robert, Cartaro, Concetta, Cerdeno, David, Chang, Yen-Yung, Chaudhuri, Mouli, Chen, Ran, Chott, Nicholas, Cooley, Jodi, Coombes, Harrison, Corbett, Jonathan, Cushman, Priscilla, De Brienne, François, Dharani, Sukeerthi, di Vacri, Maria Laura, Diamond, Miriam, Fascione, Eleanor, Figueroa, Enectali, Fink, Caleb, Fouts, Ken, Fritts, Matt, Gerbier, Gilles, Germond, Richard, Ghaith, Muad, Golwala, Sunil, Hall, Jeter, Hassan, Noah, Hines, Bruce, Hollister, Matt, Hong, Ziqing, Hoppe, Eric, Hsu, Lauren, Huber, Martin, Iyer, Vijay, Jardin, Daniel, Jastram, Andrew, Kashyap, Varchaswi, Kelsey, Michael, Kubik, Andrew, Kurinsky, Noah, Lawrence, Richard, Lee, Matthew, Li, Ashley, Liu, Jasmine, Liu, Yan, Loer, Ben, Lukens, Pat, MacFarlane, David, Mahapatra, Rupak, Mandic, Vuk, Mast, Nicholas, Mayer, Adam, Theenhausen, Hanno Meyer zu, Michaud, Émile, Michielin, Emanuele, Mirabolfathi, Nader, Mohanty, Bedangadas, Nagorny, Serge, Nelson, Jack, Neog, Himangshu, Novati, Valentina, Orrell, John, Osborne, McKay, Oser, Scott, Page, William, Partridge, Richard, Pedreros, David S., Podviianiuk, Ruslan, Ponce, Francisco, Poudel, Sudip, Pradeep, Aditi, Pyle, Matt, Rau, Wolfgang, Reid, Elliott, Ren, Tom, Reynolds, Tyler, Roberts, Amy, Robinson, Alan, Saab, Tarek, Sadoulet, Bernard, Saikia, Ishwita, Sander, Joel, Sattari, Ata, Schmidt, Benjamin, Schnee, Richard, Scorza, Silvia, Serfass, Bruno, Poudel, Sagar Sharma, Sincavage, Derek, Stanford, Chris, Street, Joseph, Sun, Huanbo, Thasrawala, Fatema, Toback, David, Underwood, Ryan, Verma, Shubham, Villano, Anthony, von Krosigk, Belina, Watkins, Samuel, Wen, Osmond, Williams, Zachary, Wilson, Matthew, Winchell, Joshua, Wu, Chih-pan, Wykoff, Kevin, Yellin, Steve, Young, Betty, Yu, To Chin, Zatschler, Birgit, Zatschler, Stefan, Zaytsev, Alexander, Zhang, Enze, Zheng, Lei, Zuber, Summer

论文摘要

在本文中，我们使用配置可能性方法进行了对SuperCDMS数据的重新分析，以通过两个非弹性散射通道来搜索子GEV暗物质颗粒（DM）：Bremsstrahlung辐射和Migdal效应。通过考虑可能的非弹性散射通道，鉴于当前实验的能量阈值，实验灵敏度可以扩展到DM质量，否则这些质量将无法通过DM-Nucleon弹性散射通道进行检测。我们将DM质量排除在$ 220〜 \ textrm {Mev}/c^2 $ at $ 2.7 \ times 10^{ - 30}〜\ textrm {cm}^2 $ via bremsstrahlung Channel。 Migdal Channel搜索将DM群众排除在$ 30〜 \ TEXTRM {MEV}/C^2 $ at $ 5.0 \ times 10^{ - 30}〜\ textrm {cm}^2 $。

In this paper, we present a re-analysis of SuperCDMS data using a profile likelihood approach to search for sub-GeV dark matter particles (DM) through two inelastic scattering channels: bremsstrahlung radiation and the Migdal effect. By considering possible inelastic scattering channels, experimental sensitivity can be extended to DM masses that would otherwise be undetectable through the DM-nucleon elastic scattering channel, given the energy threshold of current experiments. We exclude DM masses down to $220~\textrm{MeV}/c^2$ at $2.7 \times 10^{-30}~\textrm{cm}^2$ via the bremsstrahlung channel. The Migdal channel search excludes DM masses down to $30~\textrm{MeV}/c^2$ at $5.0 \times 10^{-30}~\textrm{cm}^2$.

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