From PeV to TeV: Astrophysical Neutrinos with Contained Vertices in 10 years of IceCube Data

The IceCube Neutrino Observatory is a cubic-kilometer Cherenkov detector at the South Pole, designed to study neutrinos of astrophysical origin. We present an analysis of the Medium Energy Starting Events (MESE), which is a veto-based event selection that selects neutrinos from a background of cosmi...

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Main Authors: IceCube, Basu, Vedant, Balagopal V, Aswathi, Abbasi, Rasha, Ackermann, Markus, Adams, Jenni, Agarwalla, Sanjib, Aguilar, Juanan, Ahlers, Markus, Alameddine, Jean-Marco, Amin, Najia Moureen Binte, Andeen, Karen, Anton, Gisela, Arguelles, Carlos, Ashida, Yosuke, Athanasiadou, Sofia, Axani, Spencer, Bai, Xinhua, Baricevic, Moreno, Barwick, Steve, Bay, Ryan, Beatty, James, Becker Tjus, Julia, Beise, Jakob, Bellenghi, Chiara, Benning, Charlotte, BenZvi, Segev, Berley, David, Bernardini, Elisa, Besson, Dave, Blaufuss, Erik, Blot, Summer, Bontempo, Federico, Book, Julia, Boscolo Meneguolo, Caterina, Boser, Sebastian, Botner, Olga, Bottcher, Jakob, Bourbeau, Etienne, Braun, Jim, Brinson, Bennett, Brostean-Kaiser, Jannes, Burley, Ryan T., Busse, Raffaela, Butterfield, Delaney, Campana, Michael, Carloni, Kiara, Carnie-Bronca, Erin, Chattopadhyay, Sharmistha, Chau, Thien Nhan, Chen, Chujie, Chen, Zheyang, Chirkin, Dmitry, Choi, Seowon, Clark, Brian, Classen, Lew, Coleman, Alan, Collin, Gabriel, Connolly, Amy, Conrad, Janet, Coppin, Paul, Correa, Pablo, Cowen, Doug, Dave, Pranav, Clercq, Catherine De, DeLaunay, James, Delgado Lopez, Diyaselis, Deng, Shuyang, Deoskar, Kunal, Desai, Abhishek, Desiati, Paolo, Vries, Krijn De, Wasseige, Gwenhaël De, DeYoung, Tyce, Diaz, Alejandro, Diaz-Velez, Juan Carlos, Dittmer, Markus, Domi, Alba, Dujmovic, Hrvoje, DuVernois, Michael, Ehrhardt, Thomas, Eller, Philipp, Ellinger, Enrico, Mentawi, Sharif El, Elsässer, Dominik, Engel, Ralph, Erpenbeck, Hannah, Evans, John, Evenson, Paul, Fan, Kwok Lung, Fang, Ke, Farrag, Kareem Ramadan, Fazely, Ali, Fedynitch, Anatoli, Feigl, Nora, Fiedlschuster, Sebastian, Finley, Chad, Fischer, Leander, Fox, Derek B., Franckowiak, Anna, Fritz, Alexander, Furst, Philipp, Gallagher, Jay, Ganster, Erik, Garcia, Alfonso, Gerhardt, Lisa, Ghadimi, Ava, Glaser, Christian, Glauch, Theo, Glusenkamp, Thorsten, Goehlke, Noah, Gonzalez, Javier, Goswami, Sreetama, Grant, Darren, Gray, Shannon, Gries, Oliver, Griffin, Sean, Griswold, Spencer, Groth, Kathrine Morch, Günther, Christoph, Gutjahr, Pascal, Haack, Christian, Hallgren, Allan, Halliday, Robert, Halve, Lasse, Halzen, Francis, Hamdaoui, Hassane, Ha Minh, Martin, Hanson, Kael, Hardin, John, Harnisch, Alexander, Hatch, Patrick, Haungs, Andreas, Helbing, Klaus, Hellrung, Jonas, Henningsen, Felix, Heuermann, Lars Philipp, Heyer, Nils, Hickford, Stephanie, Hidvegi, Attila, Hill, Colton, Hill, Gary, Hoffman, Kara, Hori, Sam, Hoshina, Kotoyo, Hou, Wenjie, Huber, Thomas, Hultqvist, Klas, Hunnefeld, Mirco, Hussain, Raamis, Hymon, Karolin, In, Seongjin, Ishihara, Aya, Jacquart, Marc, Janik, Oliver, Jansson, Matti, Japaridze, George, Jeong, Minjin, Jin, Miaochen, Jones, Ben, Kang, Donghwa, Kang, Woosik, Kang, Xinyue, Kappes, Alexander, Kappesser, David, Kardum, Leonora, Karg, Timo, Karl, Martina, Karle, Albrecht, Katz, Ulì, Kauer, Matt, Kelley, John, Khatee Zathul, Arifa, Kheirandish, Ali, Kiryluk, Joanna, Klein, Spencer, Kochocki, Alina, Koirala, Ramesh, Kolanoski, Hermann, Kontrimas, Tomas, Kopke, Lutz, Kopper, Claudio, Koskinen, Jason, Koundal, Paras, Kovacevich, Michael, Kowalski, Marek, Kozynets, Tetiana, Jayakumar, Krishnamoorthi, Kruiswijk, Karlijn, Krupczak, Emmett, Kumar, Anil, Kun, Emma, Neilson, Naoko Kurahashi, Lad, Neha Navnitkumar, Lagunas Gualda, Cristina, Lamoureux, Mathieu, Larson, Michael J., Latseva, Silvia, Lauber, Frederik Hermann, Lazar, Jeffrey, Lee, Jiwoong, Leonard DeHolton, Kayla, Leszczynska, Agnieszka, Lincetto, Massimiliano, Liu, Qinrui, Liubarska, Maria, Lohfink, Elisa, Love, Christina, Lozano Mariscal, Cristian Jesus, Lu, Lu, Lucarelli, Francesco, Luszczak, William, Lyu, Yang, Madsen, Jim, Mahn, Kendall, Makino, Yuya, Manao, Elena, Mancina, Sarah, Marie Sainte, Wenceslas, Maris, Ioana Codrina, Marka, Szabolcs, Marka, Zsuzsa, Marsee, Matthew, Martinez-Soler, Ivan, Maruyama, Reina H., Mayhew, Finn, McElroy, Thomas, McNally, Frank, Mead, James Vincent, Meagher, Kevin, Mechbal, Sarah, Medina, Andres, Meier, Maximilian, Merckx, Yarno, Merten, Lukas, Micallef, Jessie, Mitchell, Justin, Montaruli, Teresa, Moore, Roger, Morii, Yasutsugu, Morse, Bob, Moulai, Marjon, Mukherjee, Tista, Naab, Richard, Nagai, Ryo, Nakos, Maxwell, Naumann, Uwe, Necker, Jannis, Negi, Akshima, Neumann, Miriam, Niederhausen, Hans, Nisa, Mehr, Noell, Andreas, Novikov, Alexander, Nowicki, Sarah, Pollmann, Anna, O'Dell, Vivian, Oehler, Marie, Oeyen, Bob, Olivas, Alex, Orsoe, Rasmus, Osborn, Jesse, O'Sullivan, Erin, Pandya, Hershal, Park, Nahee, Parker, Grant, Paudel, Ek Narayan, Paul, Larissa, Pérez de los Heros, Carlos, Peterson, Josh, Philippen, Saskia, Pizzuto, Alex, Plum, Matthias, Ponten, Axel, Popovych, Yuriy, Prado Rodriguez, Maria, Pries, Brandon, Procter-Murphy, Rachel, Przybylski, Gerald, Raab, Christoph, Rack-Helleis, John, Rawlins, Katherine, Rechav, Zoe, Rehman, Abdul, Reichherzer, Patrick, Renzi, Giovanni, Resconi, Elisa, Reusch, Simeon, Rhode, Wolfgang, Riedel, Benedikt, Rifaie, Adam, Roberts, Ella, Robertson, Sally, Rodan, Steven T., Roellinghoff, Gerrit, Rongen, Martin, Rott, Carsten, Ruhe, Tim, Ruohan, Li, Ryckbosch, Dirk, Safa, Ibrahim, Saffer, Julian, Salazar-Gallegos, Daniel, Sampathkumar, Pranav, Sanchez Herrera, Sebastian, Sandrock, Alexander, Santander, Marcos, Sarkar, Sourav, Sarkar, Subir, Savelberg, Joelle, Savina, Pierpaolo, Schaufel, Merlin, Schieler, Harald, Schindler, Sebastian, Schlickmann, Lea, Schluter, Berit, Schlüter, Felix, Schmeisser, Nick, Schmidt, Torsten, Schneider, Judith, Schröder, Frank G., Schumacher, Lisa Johanna, Schwefer, Georg, Sclafani, Steve, Seckel, David, Seikh, Mohammad Ful Hossain, Seunarine, Suruj, Shah, Riya, Sharma, Ankur, Shefali, S., Shimizu, Nobuhiro, Silva, Manuel, Skrzypek, Barbara, Smithers, Ben, Snihur, Robert, Soedingrekso, Jan, Sogaard, Andreas, Soldin, Dennis, Soldin, Philipp, Sommani, Giacomo, Spannfellner, Christian, Spiczak, Glenn, Spiering, Christian, Stamatikos, Michael, Stanev, Todor, Stezelberger, Thorsten, Sturwald, Timo, Stuttard, Thomas, Sullivan, Greg, Taboada, Ignacio, Ter-Antonyan, Samvel, Thiesmeyer, Matthias, Thompson, Will, Thwaites, Jessie, Tilav, Serap, Tollefson, Kirsten, Tönnis, Christoph, Toscano, Simona, Tosi, Delia, Trettin, Alexander, Tung, Chun Fai, Turcotte, Roxanne, Twagirayezu, Jean Pierre, Ty, Bunheng, Unland Elorrieta, Martin, Upadhyay, Anuj Kumar, Upshaw, Karriem, Valtonen-Mattila, Nora, Vandenbroucke, Justin, Eijndhoven, Nick Van, Vannerom, David, Santen, Jakob Van, Vara, Javi, Veitch-Michaelis, Joshua, Venugopal, Megha, Vereecken, Matthias, Verpoest, Stef, Veske, Doğa, Vijai, Aishwarya, Walck, Christian, Weaver, Chris, Weigel, Philip, Weindl, Andreas, Weldert, Jan, Wendt, Chris, Werthebach, Johannes, Weyrauch, Mark, Whitehorn, Nathan, Wiebusch, Christopher, Willey, Nathan, Williams, Dawn, Witthaus, Lucas, Wolf, Annika, Wolf, Martin, Wrede, Gerrit, Xu, Xianwu, Yanez, Juan Pablo, Yildizci, Emre Burak, Yoshida, Shigeru, Young, Robert, Yu, Felix J., Yu, Shiqi, Yuan, Tianlu, Zhang, Zelong, Zhelnin, Pavel, Zimmerman, Melany
Format: Article in Journal/Newspaper
Language:English
Published: Scuola Internazionale Superiore di Studi Avanzati 2023
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Online Access:https://publikationen.bibliothek.kit.edu/1000163395
https://publikationen.bibliothek.kit.edu/1000163395/151544822
https://doi.org/10.5445/IR/1000163395
Description
Summary:The IceCube Neutrino Observatory is a cubic-kilometer Cherenkov detector at the South Pole, designed to study neutrinos of astrophysical origin. We present an analysis of the Medium Energy Starting Events (MESE), which is a veto-based event selection that selects neutrinos from a background of cosmic rays. This is an extension of the High Energy Starting Event (HESE) analysis, which established the existence of high-energy neutrinos of astrophysical origin. The HESE sample is consistent with a single power law spectrum with best-fit index 2.87+0.20-0.19, which is softer than complementary IceCube measurements of the astrophysical neutrino spectrum. While HESE is sensitive to neutrinos above 60 TeV, MESE improves the sensitivity to lower energies, down to 1 TeV. In this analysis we use an improved understanding of atmospheric backgrounds in the astrophysical neutrino sample via more accurate modeling of the detector self-veto. A previous measurement with a 2-year MESE dataset had indicated the presence of a possible 30 TeV excess. With 10 years of data, we have a larger sample size to investigate this excess. We will use this event selection to measure the cosmic neutrino energy spectrum over a wide energy range. The flavor ratio of astrophysical neutrinos will also be discussed.