Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case by Curtin, David, Drewes, Marco, McCullough, Matthew, Meade, Patrick, Mohapatra, Rabindra N, Shelton, Jessie, Shuve, Brian, Accomando, Elena, Alpigiani, Cristiano, Antusch, Stefan, Carlos Arteaga-Velázquez, Juan, Batell, Brian, Bauer, Martin, Blinov, Nikita, Salomé Caballero-Mora, Karen, Hyeok Chang, Jae, Chun, Eung Jin, Co, Raymond T, Cohen, Timothy, Cox, Peter, Craig, Nathaniel, Csáki, Csaba, Cui, Yanou, D’Eramo, Francesco, Delle Rose, Luigi, Bhupal Dev, P S, Dienes, Keith R, Dror, Jeff A, Essig, Rouven, Evans, Jared A, Evans, Jason L, Fernández Tellez, Arturo, Fischer, Oliver, Flacke, Thomas, Fradette, Anthony, Frugiuele, Claudia, Fuchs, Elina, Gherghetta, Tony, Giudice, Gian F, Gorbunov, Dmitry, Gupta, Rick S, Hagedorn, Claudia, Hall, Lawrence J, Harris, Philip, Carlos Helo, Juan, Hirsch, Martin, Hochberg, Yonit, Hook, Anson, Ibarra, Alejandro, Ipek, Seyda, Jung, Sunghoon, Knapen, Simon, Kuflik, Eric, Liu, Zhen, Lombardo, Salvator, Lubatti, H J, McKeen, David, Molinaro, Emiliano, Moretti, Stefano, Nagata, Natsumi, Neubert, Matthias, Miguel No, Jose, Olaiya, Emmanuel, Perez, Gilad, Peskin, Michael E, Pinner, David, Pospelov, Maxim, Reece, Matthew, Robinson, Dean J, Rodríguez Cahuantzi, Mario, Santonico, Rinaldo, Schlaffer, Matthias, Shepherd-Themistocleous, Claire H, Spray, Andrew, Stolarski, Daniel, Subieta Vasquez, Martin A, Sundrum, Raman, Thamm, Andrea, Thomas, Brooks, Tsai, Yuhsin, Tweedie, Brock, West, Stephen M, Young, Charles, Yu, Felix, Zaldivar, Bryan, Zhang, Yongchao, Zurek, Kathryn, Zurita, José