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7 results on '"Incandela, Joseph"'

1. Photon-rejection Power of the Light Dark Matter eXperiment in an 8 GeV Beam

Author

Åkesson, Torsten, Bravo, Cameron, Brennan, Liam, Bryngemark, Lene Kristian, Butti, Pierfrancesco, Dukes, E. Craig, Dutta, Valentina, Echenard, Bertrand, Eichlersmith, Thomas, Eisch, Jonathan, Elén, Einar, Ehrlich, Ralf, Froemming, Cooper, Furmanski, Andrew, Gogate, Niramay, Grieco, Chiara, Group, Craig, Herde, Hannah, Herwig, Christian, Hitlin, David G., Horoho, Tyler, Incandela, Joseph, Ketchum, Wesley, Krnjaic, Gordan, Li, Amina, Mans, Jeremiah, Masterson, Phillip, Middleton, Sophie, Moreno, Omar, Mullier, Geoffrey, Muse, Joseph, Nelson, Timothy, O'Dwyer, Rory, Östman, Leo, Oyang, James, Pascadlo, Jessica, Pöttgen, Ruth, Sarmiento, Luis G., Schuster, Philip, Solt, Matthew, Suarez, Cristina Mantilla, Tompkins, Lauren, Toro, Natalia, Tran, Nhan, Wallin, Erik, Whitbeck, Andrew, and Zhang, Danyi

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The Light Dark Matter eXperiment (LDMX) is an electron-beam fixed-target experiment designed to achieve comprehensive model independent sensitivity to dark matter particles in the sub-GeV mass region. An upgrade to the LCLS-II accelerator will increase the beam energy available to LDMX from 4 to 8 GeV. Using detailed GEANT4-based simulations, we investigate the effect of the increased beam energy on the capabilities to separate signal and background, and demonstrate that the veto methodology developed for 4 GeV successfully rejects photon-induced backgrounds for at least $2\times10^{14}$ electrons on target at 8 GeV., Comment: 28 pages, 20 figures; corrected author list

Published
2023

2. Current Status and Future Prospects for the Light Dark Matter eXperiment

Author

Åkesson, Torsten, Blinov, Nikita, Brand-Baugher, Lukas, Bravo, Cameron, Bryngemark, Lene Kristian, Butti, Pierfrancesco, Doglioni, Caterina, Dukes, Craig, Dutta, Valentina, Echenard, Bertrand, Ehrlich, Ralf, Eichlersmith, Thomas, Furmanski, Andrew, Greenstein, Chloe, Group, Craig, Gogate, Niramay, Hegde, Vinay, Herwig, Christian, Hitlin, David G., Hoang, Duc, Horoho, Tyler, Incandela, Joseph, Ketchum, Wesley, Krnjaic, Gordan, Li, Amina, Li, Shirley, Lin, Dexu, Mans, Jeremiah, Suarez, Cristina Mantilla, Masterson, Phillip, Meier, Martin, Middleton, Sophie, Moreno, Omar, Mullier, Geoffrey, Nelson, Timothy, Oyang, James, Pascadlo, Jessica, Pöttgen, Ruth, Prestel, Stefan, Pico, Luis Sarmiento, Schuster, Philip, Solt, Matthew, Tompkins, Lauren, Toro, Natalia, Tran, Nhan, Whitbeck, Andrew, Zhou, Kevin, and Zichi, Laura

Subjects
High Energy Physics - Experiment
Abstract

The constituents of dark matter are still unknown, and the viable possibilities span a vast range of masses. The physics community has established searching for sub-GeV dark matter as a high priority and identified accelerator-based experiments as an essential facet of this search strategy. A key goal of the accelerator-based dark matter program is testing the broad idea of thermally produced sub-GeV dark matter through experiments designed to directly produce dark matter particles. The most sensitive way to search for the production of light dark matter is to use a primary electron beam to produce it in fixed-target collisions. The Light Dark Matter eXperiment (LDMX) is an electron-beam fixed-target missing-momentum experiment that realizes this approach and provides unique sensitivity to light dark matter in the sub-GeV range. This contribution provides an overview of the theoretical motivation, the main experimental challenges, how LDMX addresses these challenges, and projected sensitivities. We further describe the capabilities of LDMX to explore other interesting new and standard physics, such as visibly-decaying axion and vector mediators or rare meson decays, and to provide timely electronuclear scattering measurements that will inform the modeling of neutrino-nucleus scattering for DUNE., Comment: 26 pages, 17 figures. Contribution to Snowmass 2021

Published
2022

3. A High Efficiency Photon Veto for the Light Dark Matter eXperiment

Author

Åkesson, Torsten, Blinov, Nikita, Bryngemark, Lene, Colegrove, Owen, Collura, Giulia, Dutta, Craig Dukes. Valentina, Echenard, Bertrand, Eichlersmith, Thomas, Group, Craig, Hiltbrand, Joshua, Hitlin, David G., Incandela, Joseph, Krnjaic, Gordan, Lazaro, Juan, Li, Amina, Mans, Jeremiah, Masterson, Phillip, McCormick, Jeremy, Moreno, Omar, Mullier, Geoffrey, Nagar, Akshay, Nelson, Timothy, Niendorf, Gavin, Oyang, James, Petersen, Reese, Pöttgen, Ruth, Schuster, Philip, Siegel, Harrison, Toro, Natalia, Tran, Nhan, and Whitbeck, Andrew

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Fixed-target experiments using primary electron beams can be powerful discovery tools for light dark matter in the sub-GeV mass range. The Light Dark Matter eXperiment (LDMX) is designed to measure missing momentum in high-rate electron fixed-target reactions with beam energies of 4 GeV to 16 GeV. A prerequisite for achieving several important sensitivity milestones is the capability to efficiently reject backgrounds associated with few-GeV bremsstrahlung, by twelve orders of magnitude, while maintaining high efficiency for signal. The primary challenge arises from events with photo-nuclear reactions faking the missing-momentum property of a dark matter signal. We present a methodology developed for the LDMX detector concept that is capable of the required rejection. By employing a detailed GEANT4-based model of the detector response, we demonstrate that the sampling calorimetry proposed for LDMX can achieve better than $10^{-13}$ rejection of few-GeV photons. This suggests that the luminosity-limited sensitivity of LDMX can be realized at 4 GeV and higher beam energies.

Published
2019

4. Light Dark Matter eXperiment (LDMX)

Author

Åkesson, Torsten, Berlin, Asher, Blinov, Nikita, Colegrove, Owen, Collura, Giulia, Dutta, Valentina, Echenard, Bertrand, Hiltbrand, Joshua, Hitlin, David G., Incandela, Joseph, Jaros, John, Johnson, Robert, Krnjaic, Gordan, Mans, Jeremiah, Maruyama, Takashi, McCormick, Jeremy, Moreno, Omar, Nelson, Timothy, Niendorf, Gavin, Petersen, Reese, Pöttgen, Ruth, Schuster, Philip, Toro, Natalia, Tran, Nhan, and Whitbeck, Andrew

Subjects
High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

We present an initial design study for LDMX, the Light Dark Matter Experiment, a small-scale accelerator experiment having broad sensitivity to both direct dark matter and mediator particle production in the sub-GeV mass region. LDMX employs missing momentum and energy techniques in multi-GeV electro-nuclear fixed-target collisions to explore couplings to electrons in uncharted regions that extend down to and below levels that are motivated by direct thermal freeze-out mechanisms. LDMX would also be sensitive to a wide range of visibly and invisibly decaying dark sector particles, thereby addressing many of the science drivers highlighted in the 2017 US Cosmic Visions New Ideas in Dark Matter Community Report. LDMX would achieve the required sensitivity by leveraging existing and developing detector technologies from the CMS, HPS and Mu2e experiments. In this paper, we present our initial design concept, detailed GEANT-based studies of detector performance, signal and background processes, and a preliminary analysis approach. We demonstrate how a first phase of LDMX could expand sensitivity to a variety of light dark matter, mediator, and millicharge particles by several orders of magnitude in coupling over the broad sub-GeV mass range.

Published
2018

5. US Cosmic Visions: New Ideas in Dark Matter 2017: Community Report

Author

Battaglieri, Marco, Belloni, Alberto, Chou, Aaron, Cushman, Priscilla, Echenard, Bertrand, Essig, Rouven, Estrada, Juan, Feng, Jonathan L., Flaugher, Brenna, Fox, Patrick J., Graham, Peter, Hall, Carter, Harnik, Roni, Hewett, JoAnne, Incandela, Joseph, Izaguirre, Eder, McKinsey, Daniel, Pyle, Matthew, Roe, Natalie, Rybka, Gray, Sikivie, Pierre, Tait, Tim M. P., Toro, Natalia, Van De Water, Richard, Weiner, Neal, Zurek, Kathryn, Adelberger, Eric, Afanasev, Andrei, Alexander, Derbin, Alexander, James, Antochi, Vasile Cristian, Asner, David Mark, Baer, Howard, Banerjee, Dipanwita, Baracchini, Elisabetta, Barbeau, Phillip, Barrow, Joshua, Bastidon, Noemie, Battat, James, Benson, Stephen, Berlin, Asher, Bird, Mark, Blinov, Nikita, Boddy, Kimberly K., Bondi, Mariangela, Bonivento, Walter M., Boulay, Mark, Boyce, James, Brodeur, Maxime, Broussard, Leah, Budnik, Ranny, Bunting, Philip, Caffee, Marc, Caiazza, Sabato Stefano, Campbell, Sheldon, Cao, Tongtong, Carosi, Gianpaolo, Carpinelli, Massimo, Cavoto, Gianluca, Celentano, Andrea, Chang, Jae Hyeok, Chattopadhyay, Swapan, Chavarria, Alvaro, Chen, Chien-Yi, Clark, Kenneth, Clarke, John, Colegrove, Owen, Coleman, Jonathon, Cooke, David, Cooper, Robert, Crisler, Michael, Crivelli, Paolo, D'Eramo, Francesco, D'Urso, Domenico, Dahl, Eric, Dawson, William, De Napoli, Marzio, De Vita, Raffaella, DeNiverville, Patrick, Derenzo, Stephen, Di Crescenzo, Antonia, Di Marco, Emanuele, Dienes, Keith R., Diwan, Milind, Dongwi, Dongwi Handiipondola, Drlica-Wagner, Alex, Ellis, Sebastian, Ezeribe, Anthony Chigbo, Farrar, Glennys, Ferrer, Francesc, Figueroa-Feliciano, Enectali, Filippi, Alessandra, Fiorillo, Giuliana, Fornal, Bartosz, Freyberger, Arne, Frugiuele, Claudia, Galbiati, Cristian, Galon, Iftah, Gardner, Susan, Geraci, Andrew, Gerbier, Gilles, Graham, Mathew, Gschwendtner, Edda, Hearty, Christopher, Heise, Jaret, Henning, Reyco, Hill, Richard J., Hitlin, David, Hochberg, Yonit, Hogan, Jason, Holtrop, Maurik, Hong, Ziqing, Hossbach, Todd, Humensky, T. B., Ilten, Philip, Irwin, Kent, Jaros, John, Johnson, Robert, Jones, Matthew, Kahn, Yonatan, Kalantarians, Narbe, Kaplinghat, Manoj, Khatiwada, Rakshya, Knapen, Simon, Kohl, Michael, Kouvaris, Chris, Kozaczuk, Jonathan, Krnjaic, Gordan, Kubarovsky, Valery, Kuflik, Eric, Kusenko, Alexander, Lang, Rafael, Leach, Kyle, Lin, Tongyan, Lisanti, Mariangela, Liu, Jing, Liu, Kun, Liu, Ming, Loomba, Dinesh, Lykken, Joseph, Mack, Katherine, Mans, Jeremiah, Maris, Humphrey, Markiewicz, Thomas, Marsicano, Luca, Martoff, C. J., Mazzitelli, Giovanni, McCabe, Christopher, McDermott, Samuel D., McDonald, Art, McKinnon, Bryan, Mei, Dongming, Melia, Tom, Miller, Gerald A., Miuchi, Kentaro, Nazeer, Sahara Mohammed Prem, Moreno, Omar, Morozov, Vasiliy, Mouton, Frederic, Mueller, Holger, Murphy, Alexander, Neilson, Russell, Nelson, Tim, Neu, Christopher, Nosochkov, Yuri, O'Hare, Ciaran, Oblath, Noah, Orrell, John, Ouellet, Jonathan, Pastore, Saori, Paul, Sebouh, Perelstein, Maxim, Peter, Annika, Phan, Nguyen, Phinney, Nan, Pivovaroff, Michael, Pocar, Andrea, Pospelov, Maxim, Pradler, Josef, Privitera, Paolo, Profumo, Stefano, Raggi, Mauro, Rajendran, Surjeet, Randazzo, Nunzio, Raubenheimer, Tor, Regenfus, Christian, Renshaw, Andrew, Ritz, Adam, Rizzo, Thomas, Rosenberg, Leslie, Rubbia, Andre, Rybolt, Ben, Saab, Tarek, Safdi, Benjamin R., Santopinto, Elena, Scarff, Andrew, Schneider, Michael, Schuster, Philip, Seidel, George, Sekiya, Hiroyuki, Seong, Ilsoo, Simi, Gabriele, Sipala, Valeria, Slatyer, Tracy, Slone, Oren, Smith, Peter F, Smolinsky, Jordan, Snowden-Ifft, Daniel, Solt, Matthew, Sonnenschein, Andrew, Sorensen, Peter, Spooner, Neil, Srivastava, Brijesh, Stancu, Ion, Strigari, Louis, Strube, Jan, Sushkov, Alexander O., Szydagis, Matthew, Tanedo, Philip, Tanner, David, Tayloe, Rex, Terrano, William, Thaler, Jesse, Thomas, Brooks, Thorpe, Brianna, Thorpe, Thomas, Tiffenberg, Javier, Tran, Nhan, Trovato, Marco, Tully, Christopher, Tyson, Tony, Vachaspati, Tanmay, Vahsen, Sven, van Bibber, Karl, Vandenbroucke, Justin, Villano, Anthony, Volansky, Tomer, Wang, Guojian, Ward, Thomas, Wester, William, Whitbeck, Andrew, Williams, David A., Wing, Matthew, Winslow, Lindley, Wojtsekhowski, Bogdan, Yu, Hai-Bo, Yu, Shin-Shan, Yu, Tien-Tien, Zhang, Xilin, Zhao, Yue, and Zhong, Yi-Ming

Subjects
High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

This white paper summarizes the workshop "U.S. Cosmic Visions: New Ideas in Dark Matter" held at University of Maryland on March 23-25, 2017., Comment: 102 pages + references

Published
2017

6. Status and Prospects of Top-Quark Physics

Author

Incandela, Joseph R., Quadt, Arnulf, Wagner, Wolfgang, and Wicke, Daniel

Subjects
High Energy Physics - Experiment
Abstract

The top quark is the heaviest elementary particle observed to date. Its large mass of about 173 GeV/c^2 makes the top quark act differently than other elementary fermions, as it decays before it hadronises, passing its spin information on to its decay products. In addition, the top quark plays an important role in higher-order loop corrections to standard model processes, which makes the top quark mass a crucial parameter for precision tests of the electroweak theory. The top quark is also a powerful probe for new phenomena beyond the standard model. During the time of discovery at the Tevatron in 1995 only a few properties of the top quark could be measured. In recent years, since the start of Tevatron Run II, the field of top-quark physics has changed and entered a precision era. This report summarises the latest measurements and studies of top-quark properties and gives prospects for future measurements at the Large Hadron Collider (LHC)., Comment: 76 pages, 35 figures, submitted to Progress in Particle and Nuclear Physics

Published
2009
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7. Light Dark Matter eXperiment (LDMX)

Author

Åkesson, Torsten, Berlin, Asher, Blinov, Nikita, Colegrove, Owen, Collura, Giulia, Dutta, Valentina, Echenard, Bertrand, Hiltbrand, Joshua, Hitlin, David G., Incandela, Joseph, Jaros, John, Johnson, Robert, Krnjaic, Gordan, Mans, Jeremiah, Maruyama, Takashi, Mccormick, Jeremy, Moreno, Omar, Nelson, Timothy, Niendorf, Gavin, Petersen, Reese, Pöttgen, Ruth, Schuster, Philip, Natalia Toro, Tran, Nhan, and Whitbeck, Andrew

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), High Energy Physics - Experiment, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present an initial design study for LDMX, the Light Dark Matter Experiment, a small-scale accelerator experiment having broad sensitivity to both direct dark matter and mediator particle production in the sub-GeV mass region. LDMX employs missing momentum and energy techniques in multi-GeV electro-nuclear fixed-target collisions to explore couplings to electrons in uncharted regions that extend down to and below levels that are motivated by direct thermal freeze-out mechanisms. LDMX would also be sensitive to a wide range of visibly and invisibly decaying dark sector particles, thereby addressing many of the science drivers highlighted in the 2017 US Cosmic Visions New Ideas in Dark Matter Community Report. LDMX would achieve the required sensitivity by leveraging existing and developing detector technologies from the CMS, HPS and Mu2e experiments. In this paper, we present our initial design concept, detailed GEANT-based studies of detector performance, signal and background processes, and a preliminary analysis approach. We demonstrate how a first phase of LDMX could expand sensitivity to a variety of light dark matter, mediator, and millicharge particles by several orders of magnitude in coupling over the broad sub-GeV mass range.

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