Shin-Shan Yu
We report the results of two signature-based searches for new physics using 1.9- 2.0 fb-1 of data collected at the CDF experiment. Both analyses look in events containing a photon, a b-tagged jet, and missing transverse energy. The first search requires an additional jet. The second search requires an extra electron or muon. No significant excess of events over the Standard Model prediction is observed. We also describe the "CES/CPR" method which is used to estimate the amount of mis-identified photons.
Shin-Shan Yu
We report on a search for compositeness in ee+gamma events and a search for gauge-mediated supersymmetry in gamma+gamma+met events. We also report on two signature-based searches for anomalous production of gamma + gamma + X (where X=e, mu, gamma, met) and gamma + lepton + X. The analyses are based on 0.9--1.2 fb-1 of data from p-pbar collisions at sqrt(s)=1.96 TeV collected with the CDF and D0 detectors at the Fermilab Tevatron. No significant excess of data over the predicted background has been observed.
Shin-Shan Yu
Searches in CMS for dark matter in final states with invisible particles recoiling against jets, top, W, Z, photon, and Higgs are presented. Various topologies are explored, covering several specific dark-matter production modes. The summary in a simplified-model framework of various searches for direct dark matter production with the CMS detector is discussed, highlighting sensitivities of the analyses under various assumptions of DM production.
Shin-Shan Yu
We present the results on the searches for the SM and the non-SM Higgs boson production in ppbar collisions at sqrt(s)=1.96 TeV with the CDF detector at the Fermilab Tevatron. Using data corresponding to 300--700pb-1, we search for the Higgs boson in various production and decay channels. No signal is observed, therefore, we set upper limits on the production cross-section times branching fraction as a function of the Higgs boson mass.
Shin-Shan Yu, Sergei Chekanov, Lindsey Gray, Ashutosh Kotwal, Sourav Sen, Nhan Viet Tran
We study the detector performance in the reconstruction of hadronically-decaying W bosons and Higgs bosons at very high energy proton colliders using a full GEANT4 simulation of the SiFCC detector. The W and Higgs bosons carry transverse momentum in the multi-TeV range, which results in collimated decay products that are reconstructed as a single jet. We present a measurement of the energy response and resolution of boosted W-jets and Higgs-jets and show the separation of two sub-jets within the boosted boson jet.
Shin-Shan Yu
We present the results of searches for non-standard model phenomena, with focus on signature-based searches and searches driven by non-supersymmetry (non-SUSY) models. The analyses use 1.0--2.5 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV collected with the CDF and D0 detectors at the Fermilab Tevatron. No significant excess in data has been observed. We report on the event counts, kinematic distributions, and limits on selected model parameters.
Hsin Chang, Jing-Yang Chang, Yi-Chieh Chang, Yu-Han Chang, Yuan-Hann Chang, Chien-Han Chen, Ching-Fang Chen, Kuan-Yu Chen, Yung-Fu Chen, Wei-Yuan Chiang, Wei-Chen Chien, Hien Thi Doan, Wei-Cheng Hung, Watson Kuo, Shou-Bai Lai, Han-Wen Liu, Min-Wei OuYang, Ping-I Wu, Shin-Shan Yu
This Letter reports on the first results from the Taiwan Axion Search Experiment with Haloscope, a search for axions using a microwave cavity at frequencies between 4.70750 and 4.79815 GHz. Apart from the non-axion signals, no candidates with a significance more than 3.355 were found. The experiment excludes models with the axion-two-photon coupling $\left|g_{aγγ}\right|\gtrsim 8.2\times 10^{-14}$ GeV$^{-1}$, a factor of eleven above the benchmark KSVZ model, reaching a sensitivity three orders of magnitude better than any existing limits in the mass range 19.4687 < $m_a$ < 19.8436 $μ$eV. It is also the first time that a haloscope-type experiment places constraints on $g_{aγγ}$ in this mass region.
Hsin Chang, Jing-Yang Chang, Yi-Chieh Chang, Yu-Han Chang, Yuan-Hann Chang, Chien-Han Chen, Ching-Fang Chen, Kuan-Yu Chen, Yung-Fu Chen, Wei-Yuan Chiang, Wei-Chen Chien, Hien Thi Doan, Wei-Cheng Hung, Watson Kuo, Shou-Bai Lai, Han-Wen Liu, Min-Wei OuYang, Ping-I Wu, Shin-Shan Yu
This paper presents the analysis of the data acquired during the first physics run of the Taiwan Axion Search Experiment with Haloscope (TASEH), a search for axions using a microwave cavity at frequencies between 4.70750 and 4.79815 GHz. The data were collected from October 13, 2021 to November 15, 2021, and are referred to as the CD102 data. The analysis of the TASEH CD102 data excludes models with the axion-two-photon coupling $|g_{aγγ}| \gtrsim 8.2\times 10^{-14}$ GeV$^{-1}$, a factor of eleven above the benchmark KSVZ model for the mass range 19.4687 < ma < 19.8436 $μ$eV.
Shin-Shan Yu
We present the results of searches for non-standard model phenomena in photon and jet final states. These searches use data from integrated luminosities of 0.7--2.7/fb of p-pbar collisions at sqrt(s)=1.96 TeV, collected with the CDF and D0 detectors at the Fermilab Tevatron. No significant excess in data has been observed. We report limits on the parameters of several models, including: large extra dimension, compositeness, leptoquarks, and supersymmetry.
Shin-Shan Yu
This document reviews several recent measurements at the Fermilab Tevatron, including the cross sections of inclusive jet, dijet production, the cross sections of electroweak boson (W or Z) production in association with inclusive or heavy-flavor (b or c) jets, and b-jet shapes. In addition, searches for new physics using the dijet angular distributions are discussed. These analyses are based on integrated luminosities of 0.3--2.5/fb of p-pbar collisions at \sqrt{s}=1.96 TeV, collected with the CDF and D0 detectors. The results directly test the leading order and next-to leading order calculations of perturbative quantum chromodynamics and provide constraints on the parton distribution functions, gluon-splitting contribution, and physics beyond the standard model.
Daniel Abercrombie, Nural Akchurin, Ece Akilli, Juan Alcaraz Maestre, Brandon Allen, Barbara Alvarez Gonzalez, Jeremy Andrea, Alexandre Arbey, Georges Azuelos, Patrizia Azzi, Mihailo Backović, Yang Bai, Swagato Banerjee, James Beacham, Alexander Belyaev, Antonio Boveia, Amelia Jean Brennan, Oliver Buchmueller, Matthew R. Buckley, Giorgio Busoni, Michael Buttignol, Giacomo Cacciapaglia, Regina Caputo, Linda Carpenter, Nuno Filipe Castro, Guillelmo Gomez Ceballos, Yangyang Cheng, John Paul Chou, Arely Cortes Gonzalez, Chris Cowden, Francesco D'Eramo, Annapaola De Cosa, Michele De Gruttola, Albert De Roeck, Andrea De Simone, Aldo Deandrea, Zeynep Demiragli, Anthony DiFranzo, Caterina Doglioni, Tristan du Pree, Robin Erbacher, Johannes Erdmann, Cora Fischer, Henning Flaecher, Patrick J. Fox, Benjamin Fuks, Marie-Helene Genest, Bhawna Gomber, Andreas Goudelis, Johanna Gramling, John Gunion, Kristian Hahn, Ulrich Haisch, Roni Harnik, Philip C. Harris, Kerstin Hoepfner, Siew Yan Hoh, Dylan George Hsu, Shih-Chieh Hsu, Yutaro Iiyama, Valerio Ippolito, Thomas Jacques, Xiangyang Ju, Felix Kahlhoefer, Alexis Kalogeropoulos, Laser Seymour Kaplan, Lashkar Kashif, Valentin V. Khoze, Raman Khurana, Khristian Kotov, Dmytro Kovalskyi, Suchita Kulkarni, Shuichi Kunori, Viktor Kutzner, Hyun Min Lee, Sung-Won Lee, Seng Pei Liew, Tongyan Lin, Steven Lowette, Romain Madar, Sarah Malik, Fabio Maltoni, Mario Martinez Perez, Olivier Mattelaer, Kentarou Mawatari, Christopher McCabe, Théo Megy, Enrico Morgante, Stephen Mrenna, Siddharth M. Narayanan, Andy Nelson, Sérgio F. Novaes, Klaas Ole Padeken, Priscilla Pani, Michele Papucci, Manfred Paulini, Christoph Paus, Jacopo Pazzini, Björn Penning, Michael E. Peskin, Deborah Pinna, Massimiliano Procura, Shamona F. Qazi, Davide Racco, Emanuele Re, Antonio Riotto, Thomas G. Rizzo, Rainer Roehrig, David Salek, Arturo Sanchez Pineda, Subir Sarkar, Alexander Schmidt, Steven Randolph Schramm, William Shepherd, Gurpreet Singh, Livia Soffi, Norraphat Srimanobhas, Kevin Sung, Tim M. P. Tait, Timothee Theveneaux-Pelzer, Marc Thomas, Mia Tosi, Daniele Trocino, Sonaina Undleeb, Alessandro Vichi, Fuquan Wang, Lian-Tao Wang, Ren-Jie Wang, Nikola Whallon, Steven Worm, Mengqing Wu, Sau Lan Wu, Hongtao Yang, Yong Yang, Shin-Shan Yu, Bryan Zaldivar, Marco Zanetti, Zhiqing Zhang, Alberto Zucchetta
Marco Battaglieri, Alberto Belloni, Aaron Chou, Priscilla Cushman, Bertrand Echenard, Rouven Essig, Juan Estrada, Jonathan L. Feng, Brenna Flaugher, Patrick J. Fox, Peter Graham, Carter Hall, Roni Harnik, JoAnne Hewett, Joseph Incandela, Eder Izaguirre, Daniel McKinsey, Matthew Pyle, Natalie Roe, Gray Rybka, Pierre Sikivie, Tim M. P. Tait, Natalia Toro, Richard Van De Water, Neal Weiner, Kathryn Zurek, Eric Adelberger, Andrei Afanasev, Derbin Alexander, James Alexander, Vasile Cristian Antochi, David Mark Asner, Howard Baer, Dipanwita Banerjee, Elisabetta Baracchini, Phillip Barbeau, Joshua Barrow, Noemie Bastidon, James Battat, Stephen Benson, Asher Berlin, Mark Bird, Nikita Blinov, Kimberly K. Boddy, Mariangela Bondi, Walter M. Bonivento, Mark Boulay, James Boyce, Maxime Brodeur, Leah Broussard, Ranny Budnik, Philip Bunting, Marc Caffee, Sabato Stefano Caiazza, Sheldon Campbell, Tongtong Cao, Gianpaolo Carosi, Massimo Carpinelli, Gianluca Cavoto, Andrea Celentano, Jae Hyeok Chang, Swapan Chattopadhyay, Alvaro Chavarria, Chien-Yi Chen, Kenneth Clark, John Clarke, Owen Colegrove, Jonathon Coleman, David Cooke, Robert Cooper, Michael Crisler, Paolo Crivelli, Francesco D'Eramo, Domenico D'Urso, Eric Dahl, William Dawson, Marzio De Napoli, Raffaella De Vita, Patrick DeNiverville, Stephen Derenzo, Antonia Di Crescenzo, Emanuele Di Marco, Keith R. Dienes, Milind Diwan, Dongwi Handiipondola Dongwi, Alex Drlica-Wagner, Sebastian Ellis, Anthony Chigbo Ezeribe, Glennys Farrar, Francesc Ferrer, Enectali Figueroa-Feliciano, Alessandra Filippi, Giuliana Fiorillo, Bartosz Fornal, Arne Freyberger, Claudia Frugiuele, Cristian Galbiati, Iftah Galon, Susan Gardner, Andrew Geraci, Gilles Gerbier, Mathew Graham, Edda Gschwendtner, Christopher Hearty, Jaret Heise, Reyco Henning, Richard J. Hill, David Hitlin, Yonit Hochberg, Jason Hogan, Maurik Holtrop, Ziqing Hong, Todd Hossbach, T. B. Humensky, Philip Ilten, Kent Irwin, John Jaros, Robert Johnson, Matthew Jones, Yonatan Kahn, Narbe Kalantarians, Manoj Kaplinghat, Rakshya Khatiwada, Simon Knapen, Michael Kohl, Chris Kouvaris, Jonathan Kozaczuk, Gordan Krnjaic, Valery Kubarovsky, Eric Kuflik, Alexander Kusenko, Rafael Lang, Kyle Leach, Tongyan Lin, Mariangela Lisanti, Jing Liu, Kun Liu, Ming Liu, Dinesh Loomba, Joseph Lykken, Katherine Mack, Jeremiah Mans, Humphrey Maris, Thomas Markiewicz, Luca Marsicano, C. J. Martoff, Giovanni Mazzitelli, Christopher McCabe, Samuel D. McDermott, Art McDonald, Bryan McKinnon, Dongming Mei, Tom Melia, Gerald A. Miller, Kentaro Miuchi, Sahara Mohammed Prem Nazeer, Omar Moreno, Vasiliy Morozov, Frederic Mouton, Holger Mueller, Alexander Murphy, Russell Neilson, Tim Nelson, Christopher Neu, Yuri Nosochkov, Ciaran O'Hare, Noah Oblath, John Orrell, Jonathan Ouellet, Saori Pastore, Sebouh Paul, Maxim Perelstein, Annika Peter, Nguyen Phan, Nan Phinney, Michael Pivovaroff, Andrea Pocar, Maxim Pospelov, Josef Pradler, Paolo Privitera, Stefano Profumo, Mauro Raggi, Surjeet Rajendran, Nunzio Randazzo, Tor Raubenheimer, Christian Regenfus, Andrew Renshaw, Adam Ritz, Thomas Rizzo, Leslie Rosenberg, Andre Rubbia, Ben Rybolt, Tarek Saab, Benjamin R. Safdi, Elena Santopinto, Andrew Scarff, Michael Schneider, Philip Schuster, George Seidel, Hiroyuki Sekiya, Ilsoo Seong, Gabriele Simi, Valeria Sipala, Tracy Slatyer, Oren Slone, Peter F Smith, Jordan Smolinsky, Daniel Snowden-Ifft, Matthew Solt, Andrew Sonnenschein, Peter Sorensen, Neil Spooner, Brijesh Srivastava, Ion Stancu, Louis Strigari, Jan Strube, Alexander O. Sushkov, Matthew Szydagis, Philip Tanedo, David Tanner, Rex Tayloe, William Terrano, Jesse Thaler, Brooks Thomas, Brianna Thorpe, Thomas Thorpe, Javier Tiffenberg, Nhan Tran, Marco Trovato, Christopher Tully, Tony Tyson, Tanmay Vachaspati, Sven Vahsen, Karl van Bibber, Justin Vandenbroucke, Anthony Villano, Tomer Volansky, Guojian Wang, Thomas Ward, William Wester, Andrew Whitbeck, David A. Williams, Matthew Wing, Lindley Winslow, Bogdan Wojtsekhowski, Hai-Bo Yu, Shin-Shan Yu, Tien-Tien Yu, Xilin Zhang, Yue Zhao, Yi-Ming Zhong
Thea Klaeboe Aarrestad, Alaa Abdelhamid, Haider Abidi, Jahred Adelman, Jennifer Adelman-McCarthy, Shuchin Aeron, Garvita Agarwal, Usman Ali, Cristiano Alpigiani, Omar Alterkait, Mohamed Aly, Oz Amram, Saeed Ansari Fard, Aram Apyan, John Arrington, Marvin Ascencio-Sosa, Mohammad Atif, Aneesha Avasthi, Muhammad Bilal Azam, Bhim Bam, Joshua Barrow, Rainer Bartoldus, Amit Bashyal, Aashwin Basnet, Ayse Bat, Lothar A. T. Bauerdick, John Beacom, Chris Bee, Michael Begel, Matthew Bellis, Rene Bellwied, Rakitha Beminiwattha, Gabriele Benelli, Douglas Benjamin, Catrin Bernius, Binod Bhandari, Avinay Bhat, Meghna Bhattacharya, Saptaparna Bhattacharya, Prajita Bhattarai, Sudip Bhattarai, Wahid Bhimji, Jianming Bian, Burak Bilki, Mary Bishai, Kevin Black, Kenneth Bloom, Brian Bockelman, Johan Sebastian Bonilla Castro, Tulika Bose, Nilay Bostan, Othmane Bouhali, Dimitri Bourilkov, Dominic Brailsford, Gustaaf Brooijmans, Elizabeth Brost, Maria Brigida Brunetti, Quentin Buat, Brendon Bullard, Jackson Burzynski, Paolo Calafiura, Rodolfo Capdevilla, Fabian Andres Castaño Usuga, Raquel Castillo Fernandez, Fabio Catalano, Viviana Cavaliere, Flavio Cavanna, Giuseppe Cerati, Aidan Chambers, Maria Chamizo-Llatas, Philip Chang, Andrew Chappell, Arghya Chattopadhyay, Sergei Chekanov, Jian-ping Chen, Yi Chen, Zhengyang Chen, J. Taylor Childers, Hector Chinchay, Yuan-Tang Chou, Tasnuva Chowdhury, Neil Christensen, Wonyong Chung, Rafael Coelho Lopes de Sa, Simon Corrodi, Kyle Cranmer, Matteo Cremonesi, Roy Cruz, Mate Csanad, Mariarosaria D'Alfonso, Carlo Dallapiccola, Daine Danielson, Sridhara Dasu, Gavin Davies, Kaushik De, Patrick de Perio, Klaus Dehmelt, Marco Del Tutto, Carlos Ruben Dell'Aquila, Sarah Demers, Paolo Desiati, Bhesha Devkota, Sparshita Dey, Ranjan Dharmapalan, Karri Folan Di Petrillo, Markus Diefenthaler, Jeff Dillon, Zelimir Djurcic, Caterina Doglioni, Francois Drielsma, Edmond Dukes, Irene Dutta, Peter Elmer, Johannes Elmsheuser, Victor Daniel Elvira, Harold Evans, Peter Fackeldey, Cristiano Fanelli, Hao Fang, Mattia Fani, Muhammad Farooq, Matthew Feickert, Ian Fisk, Sam Foreman, Alexander Friedland, Nuwan Chaminda G. W., Louis-Guillaume Gagnon, Massimiliano Galli, Abhijith Gandrakota, Sudeshna Ganguly, Arianna Garcia Caffaro, Rob Gardner, Rocky Bala Garg, Lino Gerlach, Aishik Ghosh, Romulus Godang, Julia Gonski, Loukas Gouskos, Richard Gran, Heather Gray, Andrei Gritsan, Gaia Grosso, Craig Group, Jiawei Guo, Shubham Gupta, Gajendra Gurung, Phillip Gutierrez, Oliver Gutsche, Tyler Hague, Joseph Haley, Eva Halkiadakis, Francis Halzen, Michael Hance, Philip Harris, Harry Hausner, Karsten Heeger, Lukas Heinrich, Alexander Held, Matthew Herndon, Ken Herner, Max Herrmann, David Hertzog, Christian Herwig, Aaron Higuera, Alexander Himmel, Timothy Hobbs, Stefan Hoeche, Tova Holmes, Tae Min Hong, Ben Hooberman, Walter Hopkins, Jessica N. Howard, Shih-Chieh Hsu, Fengping Hu, Patrick Huber, Dirk Hufnagel, Daniel Humphreys, Ia Iashvili, Joseph Incandela, Josh Isaacson, Wasikul Islam, Kirill Ivanov, Wooyoung Jang, Naomi Jarvis, Brij Kishor Jashal, Pratik Jawahar, Dulitha Jayakodige, Torri Jeske, Sergo Jindariani, Jay Hyun Jo, Bhishm Shankar Joshi, Xiangyang Ju, Andreas Jung, Thomas Junk, Michael Kagan, Daisy Kalra, Matthias Kaminski, Edward Karavakis, Stefan Katsarov, Stergios Kazakos, Paul King, Michael Kirby, Max Knobbe, Young Ju Ko, Dmitry Kondratyev, Rostislav Konoplich, Charis Koraka, Scott Kravitz, Lukas Kretschmann, Brandon Kriesten, Georgios K Krintiras, Iason Krommydas, Michelle Kuchera, Audrey Kvam, Martin Kwok, Theodota Lagouri, Sabine Lammers, Eric Lancon, Greg Landsberg, David Lange, Kevin Lannon, Joseph Lau, Luca Lavezzo, Benjamin Lawrence-Sanderson, Duc-Truyen Le, Matt LeBlanc, Sung-Won Lee, Trevin Lee, Charles Leggett, Kayla Leonard DeHolton, James Letts, Hao Li, Haoyang Li, Aklima Khanam Lima, Guilherme Lima, Mia Liu, Qibin Liu, Yinrui Liu, Zhen Liu, Shivani Lomte, Guillermo Loustau de Linares, Lu Lu, Pietro Lugato, Adam Lyon, Yang Ma, Christopher Madrid, Akhtar Mahmood, Kendall Mahn, Devin Mahon, Akshay Malige, Sudhir Malik, Abhishikth Mallampalli, Yurii Maravin, Ralph Marinaro, Pete Markowitz, Matthew Maroun, Kyla Martinez, Verena Ingrid Martinez Outschoorn, Sanjit Masanam, Mario Masciovecchio, Konstantin Matchev, Malek Mazouz, Simone Mazza, Thomas McCauley, Shawn McKee, Karim Mehrabi, Poonam Mehta, Andrew Melo, Mark Messier, Elias Mettner, Christopher Meyer, Jessie Micallef, Sophie Middleton, David W. Miller, Hamlet Mkrtchyan, Abdollah Mohammadi, Abhinav Mohan, Ajit Mohapatra, Farouk Mokhtar, Peter Monaghan, Claudio Silverio Montanari, Michael Mooney, Casey Morean, Eric Moreno, Alexander Moreno Briceño, Stephen Mrenna, Justin Mueller, Daniel Murnane, Benjamin Nachman, Emilio Nanni, Nitish Nayak, Miquel Nebot-Guinot, Orgho Neogi, Chris Neu, Mark Neubauer, Norbert Neumeister, Harvey Newman, Duong Nguyen, Gavin Niendorf, Paul Nilsson, Scarlet Norberg, Andrzej Novak, Sungbin Oh, Isabel Ojalvo, Olaiya Olokunboyo, Yasar Onel, Joseph Osborn, Ianna Osborne, Arantza Oyanguren, Nurcan Ozturk, Paul Padley, Simone Pagan Griso, Pritam Palit, Bishnu Pandey, Vishvas Pandey, Zisis Papandreou, Ganesh Parida, Ki Ryeong Park, Ajib Paudel, Manfred Paulini, Christoph Paus, Gregory Pawloski, Kevin Pedro, Gabriel Perdue, Troels Christian Petersen, Alexey Petrov, Deborah Pinna, Marc-André Pleier, Andrea Pocar, Prafull Purohit, Nived Puthumana Meleppattu, Mateusz Płoskoń, Sitian Qian, Xin Qian, Geting Qin, Aleena Rafique, Srini Rajagopalan, Dylan Rankin, Rebecca Rapp, Salvatore Rappoccio, Rohit Raut, Sagar Regmi, Benedikt Riedel, Andres Rios-Tascon, Stephen Roche, Jenna Roderick, Rimsky Rojas, Dmitry Romanov, Subhojit Roy, Rita Sadek, Dikshant Sagar, Nihar Ranjan Sahoo, Tai Sakuma, Juan Pablo Salas, Mayly Sanchez, Jay Sandesara, Alexander Savin, Ryan Schmitz, Kate Scholberg, Henry Schreiner, Reinhard Schwienhorst, Gabriella Sciolla, Saba Sehrish, Seon-Hee, Seo, Elizabeth Sexton-Kennedy, Oksana Shadura, Bijaya Sharma, Varun Sharma, Suyog Shrestha, Ryan Simeon, Jack Simoni, Siddharth Singh, Kim Siyeon, Louise Skinnari, Jinseop Song, Simone Sottocornola, Alexandre Sousa, Sairam Sri Vatsavai, Giordon Stark, Justin Stevens, Tyler Stokes, Nadja Strobbe, Indara Suarez, Manjukrishna Suresh, Andrew Sutton, Holly Szumila-Vance, Vardan Tadevosyan, Anyes Taffard, Buddhiman Tamang, Hirohisa Tanaka, Erdinch Tatar, Abdel Nasser Tawfik, Vikas Teotia, Kazuhiro Terao, Mitanshu Thakore, Jesse Thaler, Ameya Thete, Inar Timiryasov, Anthony Timmins, Andrew Toler, Dat Tran, Nhan Tran, Patrick Tsang, Ho Fung Tsoi, Vakho Tsulaia, Pham Tuan, Christopher Tully, Shengquan Tuo, Richard Tyson, Darren Upton, Hilary Utaegbulam, Zoya Vallari, Peter van Gemmeren, Vassil Vassilev, Nikhilesh Venkatasubramanian, Renzo Vizarreta, Emmanouil Vourliotis, Ilija Vukotic, Carl Vuosalo, Liv Våge, Tammy Walton, Linyan Wan, Biao Wang, Gensheng Wang, Michael Wang, Yuxuan Wang, Gordon Watts, Yingjie Wei, Derek Weitzel, Shawn Westerdale, Andrew White, Leigh Whitehead, Michael Wilking, Mike Williams, Stephane Willocq, Jeffery Winkler, Frank Winklmeier, Holger Witte, Peter Wittich, Douglas Wright, Yongcheng Wu, Yujun Wu, Wei Xie, Fang Xu, Barbara Yaeggy, Zhen Yan, Liang Yang, Wei Yang, Alejandro Yankelevich, Yiheng Ye, Oguzhan Yer, Efe Yigitbasi, Shin-Shan Yu, Jon Zarling, Chao Zhang, Licheng Zhang, Larry Zhao, Junjie Zhu, Jure Zupan
Ben Nachman, Salvatore Rappoccio, Nhan Tran, Johan Bonilla, Grigorios Chachamis, Barry M. Dillon, Sergei V. Chekanov, Robin Erbacher, Loukas Gouskos, Andreas Hinzmann, Stefan Höche, B. Todd Huffman, Ashutosh. V. Kotwal, Deepak Kar, Roman Kogler, Clemens Lange, Matt LeBlanc, Roy Lemmon, Christine McLean, Mark S. Neubauer, Tilman Plehn, Debarati Roy, Giordan Stark, Jennifer Roloff, Marcel Vos, Chih-Hsiang Yeh, Shin-Shan Yu
Even though jet substructure was not an original design consideration for the Large Hadron Collider (LHC) experiments, it has emerged as an essential tool for the current physics program. We examine the role of jet substructure on the motivation for and design of future energy frontier colliders. In particular, we discuss the need for a vibrant theory and experimental research and development program to extend jet substructure physics into the new regimes probed by future colliders. Jet substructure has organically evolved with a close connection between theorists and experimentalists and has catalyzed exciting innovations in both communities. We expect such developments will play an important role in the future energy frontier physics program.
Tomohiro Abe, Yoav Afik, Andreas Albert, Christopher R. Anelli, Liron Barak, Martin Bauer, J. Katharina Behr, Nicole F. Bell, Antonio Boveia, Oleg Brandt, Giorgio Busoni, Linda M. Carpenter, Yu-Heng Chen, Caterina Doglioni, Alison Elliot, Motoko Fujiwara, Marie-Helene Genest, Raffaele Gerosa, Stefania Gori, Johanna Gramling, Alexander Grohsjean, Giuliano Gustavino, Kristian Hahn, Ulrich Haisch, Lars Henkelmann, Junji Hisano, Anders Huitfeldt, Valerio Ippolito, Felix Kahlhoefer, Greg Landsberg, Steven Lowette, Benedikt Maier, Fabio Maltoni, Margarete Muehlleitner, Jose M. No, Priscilla Pani, Giacomo Polesello, Darren D. Price, Tania Robens, Giulia Rovelli, Yoram Rozen, Isaac W. Sanderson, Rui Santos, Stanislava Sevova, David Sperka, Kevin Sung, Tim M. P. Tait, Koji Terashi, Francesca C. Ungaro, Eleni Vryonidou, Shin-Shan Yu, Sau Lan Wu, Chen Zhou
Dark matter (DM) simplified models are by now commonly used by the ATLAS and CMS Collaborations to interpret searches for missing transverse energy ($E_T^\mathrm{miss}$). The coherent use of these models sharpened the LHC DM search program, especially in the presentation of its results and their comparison to DM direct-detection (DD) and indirect-detection (ID) experiments. However, the community has been aware of the limitations of the DM simplified models, in particular the lack of theoretical consistency of some of them and their restricted phenomenology leading to the relevance of only a small subset of $E_T^\mathrm{miss}$ signatures. This document from the LHC Dark Matter Working Group identifies an example of a next-generation DM model, called $\textrm{2HDM+a}$, that provides the simplest theoretically consistent extension of the DM pseudoscalar simplified model. A comprehensive study of the phenomenology of the $\textrm{2HDM+a}$ model is presented, including a discussion of the rich and intricate pattern of mono-$X$ signatures and the relevance of other DM as well as non-DM experiments. Based on our discussions, a set of recommended scans are proposed to explore the parameter space of the $\textrm{2HDM+a}$ model through LHC searches. The exclusion limits obtained from the proposed scans can be consistently compared to the constraints on the $\textrm{2HDM+a}$ model that derive from DD, ID and the DM relic density.
Hsin Chang, Jing-Yang Chang, Yi-Chieh Chang, Yu-Han Chang, Yuan-Hann Chang, Chien-Han Chen, Ching-Fang Chen, Kuan-Yu Chen, Yung-Fu Chen, Wei-Yuan Chiang, Wei-Chen Chien, Hien Thi Doan, Wei-Cheng Hung, Watson Kuo, Shou-Bai Lai, Han-Wen Liu, Min-Wei OuYang, Ping-I Wu, Shin-Shan Yu
We report on a holoscope axion search experiment near $19.6\ {\rm μeV}$ from the TASEH collaboration. The experiment is carried out via a frequency-tunable cavity detector with a volume $V = 0.234\ {\rm liter}$ in a magnetic field $B_0 = 8\ {\rm T}$. With a signal receiver that has a system noise temperature $T_{\rm sys} \cong 2.2\ {\rm K}$ and experiment time about 1 month, the search excludes values of the axion-photon coupling constant $g_{\rm aγγ} \gtrsim 8.1 \times 10^{-14} \ {\rm GeV}^{-1}$, a factor of 11 above the KSVZ model, at the 95\% confidence level in the mass range of $19.4687-19.8436\ {\rm μeV}$. We present the experimental setup and procedures to accomplish this search.
Shin-Shan Yu
We present the first measurement of the ratio of branching fractions BR(LAMBDAB TO LAMBDAC MU NU)/BR(LAMBDAB to LAMBDAC PI) based on 171.5 pb-1 of ppbar collisions at the center of mass energy 1.96 TeV taken with the CDF-II detector. In addition, we present measurements of BR(B0 TO DSTAR MU NU)/BR(B0 TO DSTAR PI) and BR(B0 TO D MU NU)/BR(B0 TO D PI), which serve as control samples to understand the data and Monte Carlo used for the Lambdab analysis. We find the relative branching fractions of the control samples are consistent with the ratios obtained by the Particle Data Group at the 0.7 and 1.1 sigma level, respectively. Finally, we obtain the relative Lambdab branching fraction to be: BR(LAMBDAB TO LAMBDAC MU NU)/BR(LAMBDAB to LAMBDAC PI)=20.0 +- 3.0 (stat) +- 1.2 (syst) + 0.7 -2.1 (BR) +- 0.5 (UBR). The uncertainties of the three relative branching fractions are from statistics, CDF internal systematics, external measured branching ratios and unmeasured branching ratios, respectively. We present a method to derive BR(LAMBDAB TO LAMBDAC PI) using previous CDF measurements and obtain BR(LAMBDAB TO LAMBDAC PI) = (0.41 +- 0.19 (stat + syst) + 0.06 -0.08 (pt))%, where the last uncertainty is due to the measured Lambdab pt spectrum. Combining with our result, we determine the exclusive semileptonic branching fraction for the Lambdab= (8.1 +- 1.2 (stat) + 1.1 -1.6 (syst) +- 4.3 (BR(LAMBDAB TO LAMDAC PI)))%
Chiara Arina, Benjamin Fuks, Luca Panizzi, Michael J. Baker, Alan S. Cornell, Jan Heisig, Benedikt Maier, Rute Pedro, Dominique Trischuk, Diyar Agin, Alexandre Arbey, Giorgio Arcadi, Emanuele Bagnaschi, Kehang Bai, Disha Bhatia, Mathias Becker, Alexander Belyaev, Ferdinand Benoit, Monika Blanke, Jackson Burzynski, Jonathan M. Butterworth, Antimo Cagnotta, Lorenzo Calibbi, Linda M. Carpenter, Xabier Cid Vidal, Emanuele Copello, Louie Corpe, Francesco D'Eramo, Aldo Deandrea, Aman Desai, Caterina Doglioni, Sunil M. Dogra, Mathias Garny, Mark D. Goodsell, Sohaib Hassan, Philip Coleman Harris, Julia Harz, Alejandro Ibarra, Alberto Orso Maria Iorio, Felix Kahlhoefer, Deepak Kar, Shaaban Khalil, Valery Khoze, Pyungwon Ko, Sabine Kraml, Greg Landsberg, Andre Lessa, Laura Lopez-Honorez, Alberto Mariotti, Vasiliki A. Mitsou, Kirtimaan Mohan, Chang-Seong Moon, Alexander Moreno Briceño, María Moreno Llácer, Léandre Munoz-Aillaud, Taylor Murphy, Anele M. Ncube, Wandile Nzuza, Clarisse Prat, Lena Rathmann, Thobani Sangweni, Dipan Sengupta, William Shepherd, Sukanya Sinha, Tim M. P. Tait, Andrea Thamm, Michel H. G. Tytgat, Zirui Wang, David Yu, Shin-Shan Yu
This report, summarising work achieved in the context of the LHC Dark Matter Working Group, investigates the phenomenology of $t$-channel dark matter models, spanning minimal setups with a single dark matter candidate and mediator to more complex constructions closer to UV-complete models. For each considered class of models, we examine collider, cosmological and astrophysical implications. In addition, we explore scenarios with either promptly decaying or long-lived particles, as well as featuring diverse dark matter production mechanisms in the early universe. By providing a unified analysis framework, numerical tools and guidelines, this work aims to support future experimental and theoretical efforts in exploring $t$-channel dark matter models at colliders and in cosmology.
CDF Collaboration
The analysis uses data from an integrated luminosity of approximately 172 pb-1 of ppbar collisions at sqrt(s)=1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. The Lambda_b and B0 relative branching fractions are measured to be: B(Lambda_b to Lambda_c+ mu nu)/B(Lambda_b to Lambda_c+ pi) = 16.6 +- 3.0 (stat) +- 1.0 (syst) +2.6 -3.4 (PDG) +- 0.3 (EBR), B(B0 to D+ mu nu)/B(B0 to D+ pi) = 9.9 +- 1.0 (stat) +- 0.6 (syst) +- 0.4 (PDG) +- 0.5 (EBR), B(B0 to D*+ mu nu)/B(B0 to D*+ pi) = 16.5 +- 2.3 (stat) +- 0.6 (syst) +- 0.5 (PDG) +- 0.8 (EBR) This article also presents measurements of the branching fractions of four new Lambda_b semileptonic decays: Lambda_b to Lambda_c(2595)+ mu nu, Lambda_b to Lambda_c(2625)+ mu nu, Lambda_b to Sigma_c(2455)0 pi mu nu, Lambda_b to Sigma_c(2455)++ pi mu nu, relative to the branching fraction of the Lambda_b to Lambda_c mu nu decay. Finally, the transverse-momentum distribution of Lambda_b baryons produced in p-pbar collisions is measured and found to be significantly different from that of B0 mesons.
The CDF Collaboration
We present a signature-based search for anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy. The search uses data corresponding to 2.0/fb of integrated luminosity from p-pbar collisions at a center-of-mass energy of sqrt(s)=1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6,697,466 events with a photon candidate with transverse energy ET> 25 GeV, we find 617 events with missing transverse energy > 25 GeV and two or more jets with ET> 15 GeV, at least one identified as originating from a b quark, versus an expectation of 607+- 113 events. Increasing the requirement on missing transverse energy to 50 GeV, we find 28 events versus an expectation of 30+-11 events. We find no indications of non-standard-model phenomena.