Abstract
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay far from the interaction vertex of the primary proton-proton collision. Such LLP signatures are distinct from those of promptly decaying particles that are targeted by the majority of searches for new physics at the LHC, often requiring customized techniques to identify, for example, significantly displaced decay vertices, tracks with atypical properties, and short track segments. Given their non-standard nature, a comprehensive overview of LLP signatures at the LHC is beneficial to ensure that possible avenues of the discovery of new physics are not overlooked. Here we report on the joint work of a community of theorists and experimentalists with the ATLAS, CMS, and LHCb experiments - as well as those working on dedicated experiments such as MoEDAL, milliQan, MATHUSLA, CODEX-b, and FASER - to survey the current state of LLP searches at the LHC, and to chart a path for the development of LLP searches into the future, both in the upcoming Run 3 and at the High-Luminosity LHC. The work is organized around the current and future potential capabilities of LHC experiments to generally discover new LLPs, and takes a signature-based approach to surveying classes of models that give rise to LLPs rather than emphasizing any particular theory motivation. We develop a set of simplified models; assess the coverage of current searches; document known, often unexpected backgrounds; explore the capabilities of proposed detector upgrades; provide recommendations for the presentation of search results; and look towards the newest frontiers, namely high-multiplicity “dark showers”, highlighting opportunities for expanding the LHC reach for these signals.
| Original language | English (US) |
|---|---|
| Journal | Unknown Journal |
| State | Published - Mar 11 2019 |
ASJC Scopus subject areas
- General
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Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider. / Alimena, Juliette; Beacham, James; Borsato, Martino; Cheng, Yangyang; Vidal, Xabier Cid; Cottin, Giovanna; De Roeck, Albert; Desai, Nishita; Curtin, David; Evans, Jared A.; Knapen, Simon; Kraml, Sabine; Lessa, Andre; Liu, Zhen; Mehlhase, Sascha; Ramsey-Musolf, Michael J.; Russell, Heather; Shelton, Jessie; Shuve, Brian; Verducci, Monica; Zurita, Jose; Adams, Todd; Adersberger, Michael; Alpigiani, Cristiano; Apresyan, Artur; Bainbridge, Robert John; Batozskaya, Varvara; Beauchesne, Hugues; Benato, Lisa; Berlendis, S.; Bhal, Eshwen; Blekman, Freya; Borovilou, Christina; Boyd, Jamie; Brau, Benjamin P.; Bryngemark, Lene; Buchmueller, Oliver; Buschmann, Malte; Buttinger, William; Campanelli, Mario; Cesarotti, Cari; Chen, Chunhui; Cheng, Hsin Chia; Cheong, Sanha; Citron, Matthew; Coccaro, Andrea; Coco, V.; Conte, Eric; Cormier, Félix; Corpe, Louie D.; Craig, Nathaniel; Cui, Yanou; Dall'Occo, Elena; Dallapiccola, C.; Darwish, M. R.; Davoli, Alessandro; De Cosa, Annapaola; De Simone, Andrea; Rose, Luigi Delle; Deppisch, Frank F.; Dey, Biplab; Diamond, Miriam D.; Dienes, Keith R.; Dildick, Sven; Döbrich, Babette; Drewes, Marco; Eich, Melanie; ElSawy, M.; Del Valle, Alberto Escalante; Facini, Gabriel; Farina, Marco; Feng, Jonathan L.; Fischer, Oliver; Flaecher, H. U.; Foldenauer, Patrick; Freytsis, Marat; Fuks, Benjamin; Galon, Iftah; Gershtein, Yuri; Giagu, Stefano; Giammanco, Andrea; Gligorov, Vladimir V.; Golling, Tobias; Grancagnolo, Sergio; Gustavino, Giuliano; Haas, Andrew; Hahn, Kristian; Hajer, Jan; Hammad, Ahmed; Heinrich, Lukas; Heisig, Jan; Helo, J. C.; Hesketh, Gavin; Hill, Christopher S.; Hirsch, Martin; Hohlmann, M.; Hulsbergen, W.; Huth, John; Ilten, Philip; Jacques, Thomas; Jayatilaka, Bodhitha; Jeng, Geng Yuan; Johns, K. A.; Kaji, Toshiaki; Kasieczka, Gregor; Kats, Yevgeny; Kazana, Malgorzata; Keller, Henning; Khlopov, Maxim Yu; Kling, Felix; Kolberg, Ted R.; Kostiuk, Igor; Kuwertz, Emma Sian; Kvam, Audrey; Landsberg, Greg; Lanfranchi, Gaia; Lara, Iñaki; Ledovskoy, Alexander; Linthorne, Dylan; Liu, Jia; Longarini, Iacopo; Lowette, Steven; Lubatti, Henry; Lutz, Margaret; Luo, Jingyu; Mamuzi, Judita; Marinangeli, Matthieu; Mariotti, Alberto; Marlow, Daniel; McCullough, Matthew; McDermott, Kevin; Mermod, P.; Milstead, David; Mitsou, Vasiliki A.; Berlingen, Javier Montejo; Moortgat, Filip; Morandini, Alessandro; Morris, Alice Polyxeni; Morse, David Michael; Mrenna, Stephen; Nachman, Benjamin; Nemevsek, Miha; Nesti, Fabrizio; Ohm, Christian; Pascoli, Silvia; Pedro, Kevin; Peña, Cristián; Rodriguez, Karla Josefina Pena; Piedra, Jónatan; Pinfold, James L.; Policicchio, Antonio; Popara, Goran; Prisciandaro, Jessica; Proffitt, Mason; Rauco, Giorgia; Redi, Federico; Reece, Matthew; Hall, Allison Reinsvold; Rejeb Sfar, H.; Renner, Sophie; Roepe, Amber; Ronzani, Manfredi; Salvioni, Ennio; Santra, Arka; Sawada, Ryu; Scholtz, Jakub; Schuster, Philip; Schwaller, Pedro; Sebastiani, Cristiano; Sekmen, Sezen; Selvaggi, Michele; Si, Weinan; Soffi, Livia; Stolarski, Daniel; Stuart, David; Stupak, John; Sung, Kevin; Taylor, Wendy; Templ, Sebastian; Thomas, Brooks; Torró-Pastor, Emma; Trocino, Daniele; Trojanowski, Sebastian; Trovato, Marco; Tsai, Yuhsin; Tully, C. G.; Vámi, Tamás Álmos; Vasquez, Juan Carlos; Sierra, Carlos Vázquez; Vellidis, K.; Vermassen, Basile; Vit, Martina; Walker, Devin G.E.; Wang, Xiao Ping; Watts, Gordon; Xie, Si; Yexley, Melissa; Young, Charles; Yu, Jiang Hao; Zalewski, Piotr; Zhang, Yongchao.
In: Unknown Journal, 11.03.2019.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
AU - Alimena, Juliette
AU - Beacham, James
AU - Borsato, Martino
AU - Cheng, Yangyang
AU - Vidal, Xabier Cid
AU - Cottin, Giovanna
AU - De Roeck, Albert
AU - Desai, Nishita
AU - Curtin, David
AU - Evans, Jared A.
AU - Knapen, Simon
AU - Kraml, Sabine
AU - Lessa, Andre
AU - Liu, Zhen
AU - Mehlhase, Sascha
AU - Ramsey-Musolf, Michael J.
AU - Russell, Heather
AU - Shelton, Jessie
AU - Shuve, Brian
AU - Verducci, Monica
AU - Zurita, Jose
AU - Adams, Todd
AU - Adersberger, Michael
AU - Alpigiani, Cristiano
AU - Apresyan, Artur
AU - Bainbridge, Robert John
AU - Batozskaya, Varvara
AU - Beauchesne, Hugues
AU - Benato, Lisa
AU - Berlendis, S.
AU - Bhal, Eshwen
AU - Blekman, Freya
AU - Borovilou, Christina
AU - Boyd, Jamie
AU - Brau, Benjamin P.
AU - Bryngemark, Lene
AU - Buchmueller, Oliver
AU - Buschmann, Malte
AU - Buttinger, William
AU - Campanelli, Mario
AU - Cesarotti, Cari
AU - Chen, Chunhui
AU - Cheng, Hsin Chia
AU - Cheong, Sanha
AU - Citron, Matthew
AU - Coccaro, Andrea
AU - Coco, V.
AU - Conte, Eric
AU - Cormier, Félix
AU - Corpe, Louie D.
AU - Craig, Nathaniel
AU - Cui, Yanou
AU - Dall'Occo, Elena
AU - Dallapiccola, C.
AU - Darwish, M. R.
AU - Davoli, Alessandro
AU - De Cosa, Annapaola
AU - De Simone, Andrea
AU - Rose, Luigi Delle
AU - Deppisch, Frank F.
AU - Dey, Biplab
AU - Diamond, Miriam D.
AU - Dienes, Keith R.
AU - Dildick, Sven
AU - Döbrich, Babette
AU - Drewes, Marco
AU - Eich, Melanie
AU - ElSawy, M.
AU - Del Valle, Alberto Escalante
AU - Facini, Gabriel
AU - Farina, Marco
AU - Feng, Jonathan L.
AU - Fischer, Oliver
AU - Flaecher, H. U.
AU - Foldenauer, Patrick
AU - Freytsis, Marat
AU - Fuks, Benjamin
AU - Galon, Iftah
AU - Gershtein, Yuri
AU - Giagu, Stefano
AU - Giammanco, Andrea
AU - Gligorov, Vladimir V.
AU - Golling, Tobias
AU - Grancagnolo, Sergio
AU - Gustavino, Giuliano
AU - Haas, Andrew
AU - Hahn, Kristian
AU - Hajer, Jan
AU - Hammad, Ahmed
AU - Heinrich, Lukas
AU - Heisig, Jan
AU - Helo, J. C.
AU - Hesketh, Gavin
AU - Hill, Christopher S.
AU - Hirsch, Martin
AU - Hohlmann, M.
AU - Hulsbergen, W.
AU - Huth, John
AU - Ilten, Philip
AU - Jacques, Thomas
AU - Jayatilaka, Bodhitha
AU - Jeng, Geng Yuan
AU - Johns, K. A.
AU - Kaji, Toshiaki
AU - Kasieczka, Gregor
AU - Kats, Yevgeny
AU - Kazana, Malgorzata
AU - Keller, Henning
AU - Khlopov, Maxim Yu
AU - Kling, Felix
AU - Kolberg, Ted R.
AU - Kostiuk, Igor
AU - Kuwertz, Emma Sian
AU - Kvam, Audrey
AU - Landsberg, Greg
AU - Lanfranchi, Gaia
AU - Lara, Iñaki
AU - Ledovskoy, Alexander
AU - Linthorne, Dylan
AU - Liu, Jia
AU - Longarini, Iacopo
AU - Lowette, Steven
AU - Lubatti, Henry
AU - Lutz, Margaret
AU - Luo, Jingyu
AU - Mamuzi, Judita
AU - Marinangeli, Matthieu
AU - Mariotti, Alberto
AU - Marlow, Daniel
AU - McCullough, Matthew
AU - McDermott, Kevin
AU - Mermod, P.
AU - Milstead, David
AU - Mitsou, Vasiliki A.
AU - Berlingen, Javier Montejo
AU - Moortgat, Filip
AU - Morandini, Alessandro
AU - Morris, Alice Polyxeni
AU - Morse, David Michael
AU - Mrenna, Stephen
AU - Nachman, Benjamin
AU - Nemevsek, Miha
AU - Nesti, Fabrizio
AU - Ohm, Christian
AU - Pascoli, Silvia
AU - Pedro, Kevin
AU - Peña, Cristián
AU - Rodriguez, Karla Josefina Pena
AU - Piedra, Jónatan
AU - Pinfold, James L.
AU - Policicchio, Antonio
AU - Popara, Goran
AU - Prisciandaro, Jessica
AU - Proffitt, Mason
AU - Rauco, Giorgia
AU - Redi, Federico
AU - Reece, Matthew
AU - Hall, Allison Reinsvold
AU - Rejeb Sfar, H.
AU - Renner, Sophie
AU - Roepe, Amber
AU - Ronzani, Manfredi
AU - Salvioni, Ennio
AU - Santra, Arka
AU - Sawada, Ryu
AU - Scholtz, Jakub
AU - Schuster, Philip
AU - Schwaller, Pedro
AU - Sebastiani, Cristiano
AU - Sekmen, Sezen
AU - Selvaggi, Michele
AU - Si, Weinan
AU - Soffi, Livia
AU - Stolarski, Daniel
AU - Stuart, David
AU - Stupak, John
AU - Sung, Kevin
AU - Taylor, Wendy
AU - Templ, Sebastian
AU - Thomas, Brooks
AU - Torró-Pastor, Emma
AU - Trocino, Daniele
AU - Trojanowski, Sebastian
AU - Trovato, Marco
AU - Tsai, Yuhsin
AU - Tully, C. G.
AU - Vámi, Tamás Álmos
AU - Vasquez, Juan Carlos
AU - Sierra, Carlos Vázquez
AU - Vellidis, K.
AU - Vermassen, Basile
AU - Vit, Martina
AU - Walker, Devin G.E.
AU - Wang, Xiao Ping
AU - Watts, Gordon
AU - Xie, Si
AU - Yexley, Melissa
AU - Young, Charles
AU - Yu, Jiang Hao
AU - Zalewski, Piotr
AU - Zhang, Yongchao
N1 - Publisher Copyright: Copyright © 2019, The Authors. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019/3/11
Y1 - 2019/3/11
N2 - Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay far from the interaction vertex of the primary proton-proton collision. Such LLP signatures are distinct from those of promptly decaying particles that are targeted by the majority of searches for new physics at the LHC, often requiring customized techniques to identify, for example, significantly displaced decay vertices, tracks with atypical properties, and short track segments. Given their non-standard nature, a comprehensive overview of LLP signatures at the LHC is beneficial to ensure that possible avenues of the discovery of new physics are not overlooked. Here we report on the joint work of a community of theorists and experimentalists with the ATLAS, CMS, and LHCb experiments - as well as those working on dedicated experiments such as MoEDAL, milliQan, MATHUSLA, CODEX-b, and FASER - to survey the current state of LLP searches at the LHC, and to chart a path for the development of LLP searches into the future, both in the upcoming Run 3 and at the High-Luminosity LHC. The work is organized around the current and future potential capabilities of LHC experiments to generally discover new LLPs, and takes a signature-based approach to surveying classes of models that give rise to LLPs rather than emphasizing any particular theory motivation. We develop a set of simplified models; assess the coverage of current searches; document known, often unexpected backgrounds; explore the capabilities of proposed detector upgrades; provide recommendations for the presentation of search results; and look towards the newest frontiers, namely high-multiplicity “dark showers”, highlighting opportunities for expanding the LHC reach for these signals.
AB - Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay far from the interaction vertex of the primary proton-proton collision. Such LLP signatures are distinct from those of promptly decaying particles that are targeted by the majority of searches for new physics at the LHC, often requiring customized techniques to identify, for example, significantly displaced decay vertices, tracks with atypical properties, and short track segments. Given their non-standard nature, a comprehensive overview of LLP signatures at the LHC is beneficial to ensure that possible avenues of the discovery of new physics are not overlooked. Here we report on the joint work of a community of theorists and experimentalists with the ATLAS, CMS, and LHCb experiments - as well as those working on dedicated experiments such as MoEDAL, milliQan, MATHUSLA, CODEX-b, and FASER - to survey the current state of LLP searches at the LHC, and to chart a path for the development of LLP searches into the future, both in the upcoming Run 3 and at the High-Luminosity LHC. The work is organized around the current and future potential capabilities of LHC experiments to generally discover new LLPs, and takes a signature-based approach to surveying classes of models that give rise to LLPs rather than emphasizing any particular theory motivation. We develop a set of simplified models; assess the coverage of current searches; document known, often unexpected backgrounds; explore the capabilities of proposed detector upgrades; provide recommendations for the presentation of search results; and look towards the newest frontiers, namely high-multiplicity “dark showers”, highlighting opportunities for expanding the LHC reach for these signals.
UR - http://www.scopus.com/inward/record.url?scp=85095165333&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85095165333&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85095165333
JO - Nuclear Physics A
JF - Nuclear Physics A
SN - 0375-9474
ER -