Author: "Kamenik, Jernej F." / Database: OAIster - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Kamenik, Jernej F."' showing total 198 results

Start Over Author "Kamenik, Jernej F." Database OAIster

198 results on '"Kamenik, Jernej F."'

1. Focus topics for the ECFA study on Higgs / Top / EW factories

Author: de Blas, Jorge, Koppenburg, Patrick, List, Jenny, Maltoni, Fabio, Maestre, Juan Alcaraz, Alimena, Juliette, Alison, John, Azzi, Patrizia, Azzurri, Paolo, Bagnaschi, Emanuele, Barklow, Timothy, Basso, Matthew J., Bendavid, Josh, Beneke, Martin, Ben-Haim, Eli, Berggren, Mikael, Bordone, Marzia, Bozovic, Ivanka, Cairo, Valentina, Castro, Nuno Filipe, Cobal, Marina, Collins, Paula, Dam, Mogens, Dao, Valerio, Defranchis, Matteo, Denner, Ansgar, Dittmaier, Stefan, Durieux, Gauthier, Einhaus, Ulrich, Fouz, Mary-Cruz, Franceschini, Roberto, Freitas, Ayres, Gaede, Frank, Ganis, Gerardo, Goldenzweig, Pablo, Gonçalo, Ricardo, Suarez, Rebeca Gonzalez, Gouskos, Loukas, Grohsjean, Alexander, Hajer, Jan, Hays, Chris, Heinemeyer, Sven, Hoang, André, Irles, Adrián, Jafari, Abideh, Jakobs, Karl, Jeans, Daniel, Kamenik, Jernej F., Kenzie, Matthew, Kilian, Wolfgang, Klute, Markus, Kortner, Sandra, Köneke, Karsten, Kucharczyk, Marcin, Leonidopoulos, Christos, Li, Cheng, Ligeti, Zoltan, Manoni, Elisa, Marchiori, Giovanni, Marzocca, David, Meyer, Andreas B., Mimasu, Ken, Miralles, Tristan, Miralles, Victor, Mohammadi, Abdollah, Monteil, Stéphane, Moortgat-Pick, Gudrid, Najafabadi, Zohreh, de Vera, María Teresa Núñez Pardo, Palla, Fabrizio, Peskin, Michael E., Piccinini, Fulvio, Pintucci, Laura, Płaczek, Wiesław, Plätzer, Simon, Pöschl, Roman, Robens, Tania, Robson, Aidan, Roloff, Philipp, Rompotis, Nikolaos, Saibel, Andrej, Sailer, André, Salerno, Roberto, Schott, Matthias, Schwienhorst, Reinhard, Sefkow, Felix, Selvaggi, Michele, Siegert, Frank, Simon, Frank, Siodmok, Andrzej, Sjöstrand, Torbjörn, Skovpen, Kirill, Skrzypek, Maciej, Soreq, Yotam, Ströhmer, Raimund, Suehara, Taikan, Tian, Junping, Pastor, Emma Torro, Ubiali, Maria, Silva, Luiz Vale, Vernieri, Caterina, Vicini, Alessandro, Vos, Marcel, Wiederhold, Aidan R., Williams, Sarah Louise, Wilson, Graham, Zarnecki, Aleksander Filip, Zerwas, Dirk, de Blas, Jorge, Koppenburg, Patrick, List, Jenny, Maltoni, Fabio, Maestre, Juan Alcaraz, Alimena, Juliette, Alison, John, Azzi, Patrizia, Azzurri, Paolo, Bagnaschi, Emanuele, Barklow, Timothy, Basso, Matthew J., Bendavid, Josh, Beneke, Martin, Ben-Haim, Eli, Berggren, Mikael, Bordone, Marzia, Bozovic, Ivanka, Cairo, Valentina, Castro, Nuno Filipe, Cobal, Marina, Collins, Paula, Dam, Mogens, Dao, Valerio, Defranchis, Matteo, Denner, Ansgar, Dittmaier, Stefan, Durieux, Gauthier, Einhaus, Ulrich, Fouz, Mary-Cruz, Franceschini, Roberto, Freitas, Ayres, Gaede, Frank, Ganis, Gerardo, Goldenzweig, Pablo, Gonçalo, Ricardo, Suarez, Rebeca Gonzalez, Gouskos, Loukas, Grohsjean, Alexander, Hajer, Jan, Hays, Chris, Heinemeyer, Sven, Hoang, André, Irles, Adrián, Jafari, Abideh, Jakobs, Karl, Jeans, Daniel, Kamenik, Jernej F., Kenzie, Matthew, Kilian, Wolfgang, Klute, Markus, Kortner, Sandra, Köneke, Karsten, Kucharczyk, Marcin, Leonidopoulos, Christos, Li, Cheng, Ligeti, Zoltan, Manoni, Elisa, Marchiori, Giovanni, Marzocca, David, Meyer, Andreas B., Mimasu, Ken, Miralles, Tristan, Miralles, Victor, Mohammadi, Abdollah, Monteil, Stéphane, Moortgat-Pick, Gudrid, Najafabadi, Zohreh, de Vera, María Teresa Núñez Pardo, Palla, Fabrizio, Peskin, Michael E., Piccinini, Fulvio, Pintucci, Laura, Płaczek, Wiesław, Plätzer, Simon, Pöschl, Roman, Robens, Tania, Robson, Aidan, Roloff, Philipp, Rompotis, Nikolaos, Saibel, Andrej, Sailer, André, Salerno, Roberto, Schott, Matthias, Schwienhorst, Reinhard, Sefkow, Felix, Selvaggi, Michele, Siegert, Frank, Simon, Frank, Siodmok, Andrzej, Sjöstrand, Torbjörn, Skovpen, Kirill, Skrzypek, Maciej, Soreq, Yotam, Ströhmer, Raimund, Suehara, Taikan, Tian, Junping, Pastor, Emma Torro, Ubiali, Maria, Silva, Luiz Vale, Vernieri, Caterina, Vicini, Alessandro, Vos, Marcel, Wiederhold, Aidan R., Williams, Sarah Louise, Wilson, Graham, Zarnecki, Aleksander Filip, and Zerwas, Dirk
Abstract: In order to stimulate new engagement and trigger some concrete studies in areas where further work would be beneficial towards fully understanding the physics potential of an $e^+e^-$ Higgs / Top / Electroweak factory, we propose to define a set of focus topics. The general reasoning and the proposed topics are described in this document., Comment: v3: fixed spelling of two authors
Published: 2024

2. CP-odd window into long distance dynamics in rare semileptonic $B$ decays

Author: Kamenik, Jernej F., Košnik, Nejc, Novoa-Brunet, Martín, Kamenik, Jernej F., Košnik, Nejc, and Novoa-Brunet, Martín
Abstract: We consider the combined measurements of CP-averaged decay rates and direct CP asymmetries of $B^\pm\to K^\pm \ell^+ \ell^-$ and $B^\pm\to \pi^\pm \ell^+ \ell^-$ to probe (non-local) four-quark operator matrix element contributions to rare semileptonic B meson decays. We also explore how their effects could be in principle disentangled from possible local new physics effects using $U$-spin relations. To this end, we construct a ratio of CP-odd decay rate differences which are exactly predicted within the standard model in the $U$-spin limit, while the leading $U$-spin breaking effects can also be systematically calculated. Our results motivate binned measurements of the direct CP asymmetry in $B^\pm\to \pi^\pm \ell^+ \ell^-$ as well as dedicated theoretical estimates of $U$-spin breaking both in local form factors as well as in four-quark matrix elements., Comment: 7 pages, 2 figures
Published: 2024

3. Flavor violating Higgs and $Z$ decays at FCC-ee

Author: Kamenik, Jernej F., Korajac, Arman, Szewc, Manuel, Tammaro, Michele, Zupan, Jure, Kamenik, Jernej F., Korajac, Arman, Szewc, Manuel, Tammaro, Michele, and Zupan, Jure
Abstract: Recent advances in $b$, $c$, and $s$ quark tagging coupled with novel statistical analysis techniques will allow future high energy and high statistics electron-positron colliders, such as the FCC-ee, to place phenomenologically relevant bounds on flavor violating Higgs and $Z$ decays to quarks. We assess the FCC-ee reach for $Z/h\to bs, cu$ decays as a function of jet tagging performance. We also update the SM predictions for the corresponding branching ratios, as well as the indirect constraints on the flavor violating Higgs and $Z$ couplings to quarks. Using type III two Higgs doublet model as an example of beyond the standard model physics, we show that the searches for $h\to bs, cu$ decays at FCC-ee can probe new parameter space not excluded by indirect searches. We also reinterpret the FCC-ee reach for $Z\to bs , cu$ in terms of the constraints on models with vectorlike quarks., Comment: 22 pages, 15 figures
Published: 2023

4. New Physics in CP Violating and Flavour Changing Quark Dipole Transitions

Author: Fajfer, Svjetlana, Kamenik, Jernej F., Košnik, Nejc, Smolkovič, Aleks, Tammaro, Michele, Fajfer, Svjetlana, Kamenik, Jernej F., Košnik, Nejc, Smolkovič, Aleks, and Tammaro, Michele
Abstract: We explore CP-violating (CPV) effects of heavy New Physics in flavour-changing quark dipole transitions, within the framework of Standard Model Effective Field Theory (SMEFT). First, we establish the relevant dimension six operators and consider the Renormalisation Group (RG) evolution of the appropriate Wilson coefficients. We investigate RG-induced correlations between different flavour-violating processes and electric dipole moments (EDMs) within the Minimal Flavour Violating and $U(2)^3$ quark flavour models. At low energies, we set bounds on the Wilson coefficients of the dipole operators using CPV induced contributions to observables in non-leptonic and radiative $B$, $D$ and $K$ decays as well as the neutron and electron EDMs. This enables us to connect observable CPV effects at low energies and general NP appearing at high scales. We present bounds on the Wilson coefficients of the relevant SMEFT operators at the high scale $\Lambda = 5~{\rm TeV}$, and discuss most sensitive CPV observables for future experimental searches., Comment: 41 pages, 4 figures, 7 tables
Published: 2023

5. Improving the Composition of Ultra High Energy Cosmic Rays with Ground Detector Data

Author: Bortolato, Blaž, Kamenik, Jernej F., Tammaro, Michele, Bortolato, Blaž, Kamenik, Jernej F., and Tammaro, Michele
Abstract: We show that the maximum shower depth distributions of Ultra-High Energy Cosmic Rays (UHECRs), as measured by fluorescence telescopes, can be augmented by building a mapping to observables collected by surface detectors. The resulting statistical improvement of such augmented dataset depends in a universal way on the strength of the correlation exhibited by the mapping. Building upon the publicly available data on "golden hybrid" events from the Pierre Auger Observatory we project possible improvements in the inferred composition of UHECRs for a range of possible mappings with varying correlation strengths., Comment: 8 pages, 6 figures, method corrected
Published: 2023

6. Improving the Composition of Ultra High Energy Cosmic Rays with Ground Detector Data

Author: Bortolato, Blaž, Kamenik, Jernej F., Tammaro, Michele, Bortolato, Blaž, Kamenik, Jernej F., and Tammaro, Michele
Abstract: We show that the maximum shower depth distributions of Ultra-High Energy Cosmic Rays (UHECRs), as measured by fluorescence telescopes, can be augmented by building a mapping to observables collected by surface detectors. The resulting statistical improvement of such augmented dataset depends in a universal way on the strength of the correlation exhibited by the mapping. Building upon the publicly available data on "golden hybrid" events from the Pierre Auger Observatory we project possible improvements in the inferred composition of UHECRs for a range of possible mappings with varying correlation strengths., Comment: 8 pages, 6 figures, method corrected
Published: 2023

7. Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Author: Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, Zupanic, Erik, Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, and Zupanic, Erik
Abstract: We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with ESA and national space and research funding agencies., Comment: Summary of the Community Workshop on Cold Atoms in Space and corresponding Road-map: https://indico.cern.ch/event/1064855
Published: 2022

8. Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Author: Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, Zupanic, Erik, Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, and Zupanic, Erik
Abstract: We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with ESA and national space and research funding agencies., Comment: Summary of the Community Workshop on Cold Atoms in Space and corresponding Road-map: https://indico.cern.ch/event/1064855
Published: 2022

9. Null Hypothesis Test for Anomaly Detection

Author: Kamenik, Jernej F., Szewc, Manuel, Kamenik, Jernej F., and Szewc, Manuel
Abstract: We extend the use of Classification Without Labels for anomaly detection with a hypothesis test designed to exclude the background-only hypothesis. By testing for statistical independence of the two discriminating dataset regions, we are able to exclude the background-only hypothesis without relying on fixed anomaly score cuts or extrapolations of background estimates between regions. The method relies on the assumption of conditional independence of anomaly score features and dataset regions, which can be ensured using existing decorrelation techniques. As a benchmark example, we consider the LHC Olympics dataset where we show that mutual information represents a suitable test for statistical independence and our method exhibits excellent and robust performance at different signal fractions even in presence of realistic feature correlations., Comment: 10 pages, 3 figures, 1 Table. Matches published version at Physics Letters B. All code is available at https://github.com/ManuelSzewc/Null_Hypothesis_Test_for_Anomaly_Detection. Comments welcome!
Published: 2022
Full Text: View/download PDF

10. Cold atoms in space: community workshop summary and proposed road-map

Author: Alonso, Iván, Alpigiani, Cristiano, Altschul, Brett, Araújo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaž, Antun, Bandarupally, Satvika, Barish, Barry C., Barone, Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belić, Aleksandar, Bergé, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sébastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luís, Burdin, Sergey, Cacciapuoti, Luigi, Callegari, Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Michael Cruise, A., Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Doré, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanì, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, René, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gündoğan, Mustafa, Gupta, Ratnesh K., Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurélien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglič, Peter, Jetzer, Philippe, Juzeliūnas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lämmerzahl, Claus, Landsberg, Greg, Le Poncin-Lafitte, Christophe, Leibrandt, David R., Lévèque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Lisdat, Christian, Liu, Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Mežnaršič, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Müller, Jürgen, Murphy, Eamonn, Müstecaplıoğlu, Özgür E., O’Shea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Pereira dos Santos, Franck, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schäffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A., Valenzuela, Tristan, Van Den Bossche, Mathias, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Wille, Eric, Williams, Jason, Windpassinger, Patrick, Wittrock, Ulrich, Wolf, Peter, Woltmann, Marian, Wörner, Lisa, Xuereb, André, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Zambrini Cruzeiro, Emmanuel, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, Zupanič, Erik, Alonso, Iván, Alpigiani, Cristiano, Altschul, Brett, Araújo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaž, Antun, Bandarupally, Satvika, Barish, Barry C., Barone, Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belić, Aleksandar, Bergé, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sébastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luís, Burdin, Sergey, Cacciapuoti, Luigi, Callegari, Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Michael Cruise, A., Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Doré, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanì, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, René, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gündoğan, Mustafa, Gupta, Ratnesh K., Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurélien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglič, Peter, Jetzer, Philippe, Juzeliūnas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lämmerzahl, Claus, Landsberg, Greg, Le Poncin-Lafitte, Christophe, Leibrandt, David R., Lévèque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Lisdat, Christian, Liu, Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Mežnaršič, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Müller, Jürgen, Murphy, Eamonn, Müstecaplıoğlu, Özgür E., O’Shea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Pereira dos Santos, Franck, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schäffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A., Valenzuela, Tristan, Van Den Bossche, Mathias, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Wille, Eric, Williams, Jason, Windpassinger, Patrick, Wittrock, Ulrich, Wolf, Peter, Woltmann, Marian, Wörner, Lisa, Xuereb, André, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Zambrini Cruzeiro, Emmanuel, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, and Zupanič, Erik
Abstract: We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with the European Space Agency (ESA) and national space and research funding agencies.
Published: 2022

11. Learning the Composition of Ultra High Energy Cosmic Rays

Author: Bortolato, Blaz, Kamenik, Jernej F., Tammaro, Michele, Bortolato, Blaz, Kamenik, Jernej F., and Tammaro, Michele
Abstract: We apply statistical inference on the Pierre Auger Open Data to discern for the first time the full mass composition of cosmic rays at different energies. Working with longitudinal electromagnetic profiles of cosmic ray showers, in particular their peaking depths $X_{\rm max}$, we employ central moments of the $X_{\rm max}$ distributions as features to discriminate between different shower compositions. We find that already the first few moments entail the most relevant information to infer the primary cosmic ray mass spectrum. Our approach, based on an unbinned likelihood, allows us to consistently account for sources of statistical uncertainties due to finite datasets, both measured and simulated, as well as systematic effects. Finally, we provide a quantitative comparison of different high energy hadronic interaction models available in the atmospheric shower simulation codes., Comment: 28 pages + 16 page Appendix, 27 figures
Published: 2022
Full Text: View/download PDF

12. Accessing CKM suppressed top decays at the LHC

Author: Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, Zupan, Jure, Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, and Zupan, Jure
Abstract: We propose an extension of the existing experimental strategy for measuring branching fractions of top quark decays, targeting specifically $t\to j_q W$, where $j_q$ is a light quark jet. The improved strategy uses orthogonal $b$- and $q$-taggers, and adds a new observable, the number of light-quark-tagged jets, to the already commonly used observable, the fraction of $b$-tagged jets in an event. Careful inclusion of the additional complementary observable significantly increases the expected statistical power of the analysis, with the possibility of excluding $|V_{tb}|=1$ at $95\%$ C.L. at the HL-LHC, and accessing directly the standard model value of $|V_{td}|^2+|V_{ts}|^2$., Comment: 19 pages, 7 figures
Published: 2022

13. Null Hypothesis Test for Anomaly Detection

Author: Kamenik, Jernej F., Szewc, Manuel, Kamenik, Jernej F., and Szewc, Manuel
Abstract: We extend the use of Classification Without Labels for anomaly detection with a hypothesis test designed to exclude the background-only hypothesis. By testing for statistical independence of the two discriminating dataset regions, we are able to exclude the background-only hypothesis without relying on fixed anomaly score cuts or extrapolations of background estimates between regions. The method relies on the assumption of conditional independence of anomaly score features and dataset regions, which can be ensured using existing decorrelation techniques. As a benchmark example, we consider the LHC Olympics dataset where we show that mutual information represents a suitable test for statistical independence and our method exhibits excellent and robust performance at different signal fractions even in presence of realistic feature correlations., Comment: 10 pages, 3 figures, 1 Table. Matches published version at Physics Letters B. All code is available at https://github.com/ManuelSzewc/Null_Hypothesis_Test_for_Anomaly_Detection. Comments welcome!
Published: 2022
Full Text: View/download PDF

14. Probing CP violation in exclusive $b \to s \nu \bar \nu$ transitions

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We consider the time-dependent analysis of rare $B_d$ and $B_s$ decays mediated by $b\to s \nu \bar \nu$ transitions. The inclusion of time evolution allows us to construct novel observables with specific sensitivity to CP-odd phases in these processes. The sensitivity to CP violation of corresponding time-integrated measurements in presence of flavor-tagging is also explored. We provide precise predictions for these observables in the SM and explore their sensitivity to new CP-violating NP contributions at present and planned future $B$-physics experiments. As such, these observables provide unique probes of CP violation in $b \to s \nu \bar \nu$ transitions.
Published: 2022
Full Text: View/download PDF

15. Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Author: Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, Zupanic, Erik, Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, and Zupanic, Erik
Abstract: We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with ESA and national space and research funding agencies., Comment: Summary of the Community Workshop on Cold Atoms in Space and corresponding Road-map: https://indico.cern.ch/event/1064855
Published: 2022
Full Text: View/download PDF

16. Null Hypothesis Test for Anomaly Detection

Author: Kamenik, Jernej F., Szewc, Manuel, Kamenik, Jernej F., and Szewc, Manuel
Abstract: We extend the use of Classification Without Labels for anomaly detection with a hypothesis test designed to exclude the background-only hypothesis. By testing for statistical independence of the two discriminating dataset regions, we are able to exclude the background-only hypothesis without relying on fixed anomaly score cuts or extrapolations of background estimates between regions. The method relies on the assumption of conditional independence of anomaly score features and dataset regions, which can be ensured using existing decorrelation techniques. As a benchmark example, we consider the LHC Olympics dataset where we show that mutual information represents a suitable test for statistical independence and our method exhibits excellent and robust performance at different signal fractions even in presence of realistic feature correlations., Comment: 10 pages, 3 figures, 1 Table. Matches published version at Physics Letters B. All code is available at https://github.com/ManuelSzewc/Null_Hypothesis_Test_for_Anomaly_Detection. Comments welcome!
Published: 2022
Full Text: View/download PDF

17. Probing CP violation in exclusive $b \to s \nu \bar \nu$ transitions

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We consider the time-dependent analysis of rare $B_d$ and $B_s$ decays mediated by $b\to s \nu \bar \nu$ transitions. The inclusion of time evolution allows us to construct novel observables with specific sensitivity to CP-odd phases in these processes. The sensitivity to CP violation of corresponding time-integrated measurements in presence of flavor-tagging is also explored. We provide precise predictions for these observables in the SM and explore their sensitivity to new CP-violating NP contributions at present and planned future $B$-physics experiments. As such, these observables provide unique probes of CP violation in $b \to s \nu \bar \nu$ transitions.
Published: 2022
Full Text: View/download PDF

18. Accessing CKM suppressed top decays at the LHC

Author: Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, Zupan, Jure, Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, and Zupan, Jure
Abstract: We propose an extension of the existing experimental strategy for measuring branching fractions of top quark decays, targeting specifically $t\to j_q W$, where $j_q$ is a light quark jet. The improved strategy uses orthogonal $b$- and $q$-taggers, and adds a new observable, the number of light-quark-tagged jets, to the already commonly used observable, the fraction of $b$-tagged jets in an event. Careful inclusion of the additional complementary observable significantly increases the expected statistical power of the analysis, with the possibility of excluding $|V_{tb}|=1$ at $95\%$ C.L. at the HL-LHC, and accessing directly the standard model value of $|V_{td}|^2+|V_{ts}|^2$., Comment: 19 pages, 7 figures
Published: 2022
Full Text: View/download PDF

19. Cold atoms in space: community workshop summary and proposed road-map

Author: Alonso, Iván, Alpigiani, Cristiano, Altschul, Brett, Araújo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaž, Antun, Bandarupally, Satvika, Barish, Barry C., Barone, Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belić, Aleksandar, Bergé, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sébastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luís, Burdin, Sergey, Cacciapuoti, Luigi, Callegari, Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Michael Cruise, A., Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Doré, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanì, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, René, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gündoğan, Mustafa, Gupta, Ratnesh K., Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurélien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglič, Peter, Jetzer, Philippe, Juzeliūnas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lämmerzahl, Claus, Landsberg, Greg, Le Poncin-Lafitte, Christophe, Leibrandt, David R., Lévèque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Lisdat, Christian, Liu, Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Mežnaršič, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Müller, Jürgen, Murphy, Eamonn, Müstecaplıoğlu, Özgür E., O’Shea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Pereira dos Santos, Franck, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schäffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A., Valenzuela, Tristan, Van Den Bossche, Mathias, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Wille, Eric, Williams, Jason, Windpassinger, Patrick, Wittrock, Ulrich, Wolf, Peter, Woltmann, Marian, Wörner, Lisa, Xuereb, André, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Zambrini Cruzeiro, Emmanuel, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, Zupanič, Erik, Alonso, Iván, Alpigiani, Cristiano, Altschul, Brett, Araújo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaž, Antun, Bandarupally, Satvika, Barish, Barry C., Barone, Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belić, Aleksandar, Bergé, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sébastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luís, Burdin, Sergey, Cacciapuoti, Luigi, Callegari, Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Michael Cruise, A., Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Doré, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanì, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, René, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gündoğan, Mustafa, Gupta, Ratnesh K., Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurélien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglič, Peter, Jetzer, Philippe, Juzeliūnas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lämmerzahl, Claus, Landsberg, Greg, Le Poncin-Lafitte, Christophe, Leibrandt, David R., Lévèque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Lisdat, Christian, Liu, Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Mežnaršič, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Müller, Jürgen, Murphy, Eamonn, Müstecaplıoğlu, Özgür E., O’Shea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Pereira dos Santos, Franck, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schäffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A., Valenzuela, Tristan, Van Den Bossche, Mathias, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Wille, Eric, Williams, Jason, Windpassinger, Patrick, Wittrock, Ulrich, Wolf, Peter, Woltmann, Marian, Wörner, Lisa, Xuereb, André, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Zambrini Cruzeiro, Emmanuel, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, and Zupanič, Erik
Abstract: We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with the European Space Agency (ESA) and national space and research funding agencies.
Published: 2022

20. Learning the Composition of Ultra High Energy Cosmic Rays

Author: Bortolato, Blaz, Kamenik, Jernej F., Tammaro, Michele, Bortolato, Blaz, Kamenik, Jernej F., and Tammaro, Michele
Abstract: We apply statistical inference on the Pierre Auger Open Data to discern for the first time the full mass composition of cosmic rays at different energies. Working with longitudinal electromagnetic profiles of cosmic ray showers, in particular their peaking depths $X_{\rm max}$, we employ central moments of the $X_{\rm max}$ distributions as features to discriminate between different shower compositions. We find that already the first few moments entail the most relevant information to infer the primary cosmic ray mass spectrum. Our approach, based on an unbinned likelihood, allows us to consistently account for sources of statistical uncertainties due to finite datasets, both measured and simulated, as well as systematic effects. Finally, we provide a quantitative comparison of different high energy hadronic interaction models available in the atmospheric shower simulation codes., Comment: 28 pages + 16 page Appendix, 27 figures
Published: 2022
Full Text: View/download PDF

21. Cold Atoms in Space: Community Workshop Summary and Proposed Road-Map

Author: Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, Zupanic, Erik, Alonso, Ivan, Alpigiani, Cristiano, Altschul, Brett, Araujo, Henrique, Arduini, Gianluigi, Arlt, Jan, Badurina, Leonardo, Balaz, Antun, Bandarupally, Satvika, Barone, Barry C Barish Michele, Barsanti, Michele, Bass, Steven, Bassi, Angelo, Battelier, Baptiste, Baynham, Charles F. A., Beaufils, Quentin, Belic, Aleksandar, Berge, Joel, Bernabeu, Jose, Bertoldi, Andrea, Bingham, Robert, Bize, Sebastien, Blas, Diego, Bongs, Kai, Bouyer, Philippe, Braitenberg, Carla, Brand, Christian, Braxmaier, Claus, Bresson, Alexandre, Buchmueller, Oliver, Budker, Dmitry, Bugalho, Luıs, Burdin, Sergey, Callegari, Luigi Cacciapuoti Simone, Calmet, Xavier, Calonico, Davide, Canuel, Benjamin, Caramete, Laurentiu-Ioan, Carraz, Olivier, Cassettari, Donatella, Chakraborty, Pratik, Chattopadhyay, Swapan, Chauhan, Upasna, Chen, Xuzong, Chen, Yu-Ao, Chiofalo, Maria Luisa, Coleman, Jonathon, Corgier, Robin, Cotter, J. P., Cruise, A. Michael, Cui, Yanou, Davies, Gavin, De Roeck, Albert, Demarteau, Marcel, Derevianko, Andrei, Di Clemente, Marco, Djordjevic, Goran S., Donadi, Sandro, Dore, Olivier, Dornan, Peter, Doser, Michael, Drougakis, Giannis, Dunningham, Jacob, Easo, Sajan, Eby, Joshua, Elertas, Gedminas, Ellis, John, Evans, David, Examilioti, Pandora, Fadeev, Pavel, Fanı, Mattia, Fassi, Farida, Fattori, Marco, Fedderke, Michael A., Felea, Daniel, Feng, Chen-Hao, Ferreras, Jorge, Flack, Robert, Flambaum, Victor V., Forsberg, Rene, Fromhold, Mark, Gaaloul, Naceur, Garraway, Barry M., Georgousi, Maria, Geraci, Andrew, Gibble, Kurt, Gibson, Valerie, Gill, Patrick, Giudice, Gian F., Goldwin, Jon, Gould, Oliver, Grachov, Oleg, Graham, Peter W., Grasso, Dario, Griffin, Paul F., Guerlin, Christine, Gundogan, Mustafa, Gupta, Ratnesh K, Haehnelt, Martin, Hanımeli, Ekim T., Hawkins, Leonie, Hees, Aurelien, Henderson, Victoria A., Herr, Waldemar, Herrmann, Sven, Hird, Thomas, Hobson, Richard, Hock, Vincent, Hogan, Jason M., Holst, Bodil, Holynski, Michael, Israelsson, Ulf, Jeglic, Peter, Jetzer, Philippe, Juzeliunas, Gediminas, Kaltenbaek, Rainer, Kamenik, Jernej F., Kehagias, Alex, Kirova, Teodora, Kiss-Toth, Marton, Koke, Sebastian, Kolkowitz, Shimon, Kornakov, Georgy, Kovachy, Tim, Krutzik, Markus, Kumar, Mukesh, Kumar, Pradeep, Lammerzahl, Claus, Landsberg, Greg, Poncin-Lafitte, Christophe Le, Leibrandt, David R., Leveque, Thomas, Lewicki, Marek, Li, Rui, Lipniacka, Anna, Liu, Christian Lisdat Mia, Lopez-Gonzalez, J. L., Loriani, Sina, Louko, Jorma, Luciano, Giuseppe Gaetano, Lundblad, Nathan, Maddox, Steve, Mahmoud, M. A., Maleknejad, Azadeh, March-Russell, John, Massonnet, Didier, McCabe, Christopher, Meister, Matthias, Meznarsic, Tadej, Micalizio, Salvatore, Migliaccio, Federica, Millington, Peter, Milosevic, Milan, Mitchell, Jeremiah, Morley, Gavin W., Muller, Jurgen, Murphy, Eamonn, Mustecaplıoglu, Ozgur E., OShea, Val, Oi, Daniel K. L., Olson, Judith, Pal, Debapriya, Papazoglou, Dimitris G., Pasatembou, Elizabeth, Paternostro, Mauro, Pawlowski, Krzysztof, Pelucchi, Emanuele, Santos, Franck Pereira dos, Peters, Achim, Pikovski, Igor, Pilaftsis, Apostolos, Pinto, Alexandra, Prevedelli, Marco, Puthiya-Veettil, Vishnupriya, Quenby, John, Rafelski, Johann, Rasel, Ernst M., Ravensbergen, Cornelis, Reguzzoni, Mirko, Richaud, Andrea, Riou, Isabelle, Rothacher, Markus, Roura, Albert, Ruschhaupt, Andreas, Sabulsky, Dylan O., Safronova, Marianna, Saltas, Ippocratis D., Salvi, Leonardo, Sameed, Muhammed, Saurabh, Pandey, Schaffer, Stefan, Schiller, Stephan, Schilling, Manuel, Schkolnik, Vladimir, Schlippert, Dennis, Schmidt, Piet O., Schnatz, Harald, Schneider, Jean, Schneider, Ulrich, Schreck, Florian, Schubert, Christian, Shayeghi, Armin, Sherrill, Nathaniel, Shipsey, Ian, Signorini, Carla, Singh, Rajeev, Singh, Yeshpal, Skordis, Constantinos, Smerzi, Augusto, Sopuerta, Carlos F., Sorrentino, Fiodor, Sphicas, Paraskevas, Stadnik, Yevgeny V., Stefanescu, Petruta, Tarallo, Marco G., Tentindo, Silvia, Tino, Guglielmo M., Tinsley, Jonathan N., Tornatore, Vincenza, Treutlein, Philipp, Trombettoni, Andrea, Tsai, Yu-Dai, Tuckey, Philip, Uchida, Melissa A, Valenzuela, Tristan, Bossche, Mathias Van Den, Vaskonen, Ville, Verma, Gunjan, Vetrano, Flavio, Vogt, Christian, von Klitzing, Wolf, Waller, Pierre, Walser, Reinhold, Williams, Eric Wille Jason, Windpassinger, Patrick, Wittrock, Ulric, Wolf, Peter, Woltmann, Marian, Worner, Lisa, Xuereb, Andre, Yahia, Mohamed, Yazgan, Efe, Yu, Nan, Zahzam, Nassim, Cruzeiro, Emmanuel Zambrini, Zhan, Mingsheng, Zou, Xinhao, Zupan, Jure, and Zupanic, Erik
Abstract: We summarize the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. We review the current status of cold atom technologies and outline the requirements for their space qualification, including the development paths and the corresponding technical milestones, and identifying possible pathfinder missions to pave the way for missions to exploit the full potential of cold atoms in space. Finally, we present a first draft of a possible road-map for achieving these goals, that we propose for discussion by the interested cold atom, Earth Observation, fundamental physics and other prospective scientific user communities, together with ESA and national space and research funding agencies., Comment: Summary of the Community Workshop on Cold Atoms in Space and corresponding Road-map: https://indico.cern.ch/event/1064855
Published: 2022
Full Text: View/download PDF

22. Bayesian probabilistic modeling for four-top production at the LHC

Author: Alvarez, Ezequiel; https://orcid.org/0000-0001-6780-4415, Dillon, Barry M, Faroughy, Darius A; https://orcid.org/0000-0002-4027-5477, Kamenik, Jernej F; https://orcid.org/0000-0001-5183-8637, Lamagna, Federico, Szewc, Manuel, Alvarez, Ezequiel; https://orcid.org/0000-0001-6780-4415, Dillon, Barry M, Faroughy, Darius A; https://orcid.org/0000-0002-4027-5477, Kamenik, Jernej F; https://orcid.org/0000-0001-5183-8637, Lamagna, Federico, and Szewc, Manuel
Abstract: Monte Carlo (MC) generators are crucial for analyzing data in particle collider experiments. However, often even a small mismatch between the MC simulations and the measurements can undermine the interpretation of the results. This is particularly important in the context of LHC searches for rare physics processes within and beyond the standard model (SM). One of the ultimate rare processes in the SM currently being explored at the LHC, pp→t¯tt¯t with its large multidimensional phase-space is an ideal testing ground to explore new ways to reduce the impact of potential MC mismodeling on experimental results. We propose a novel statistical method capable of disentangling the 4-top signal from the dominant backgrounds in the same-sign dilepton channel, while simultaneously correcting for possible MC imperfections in modeling of the most relevant discriminating observables—the jet multiplicity distributions. A Bayesian mixture of multinomials is used to model the light-jet and b-jet multiplicities under the assumption of their conditional independence. The signal and background distributions generated from a deliberately mistuned MC simulator are used as model priors. The posterior distributions, as well as the signal and background fractions, are then learned from the data using Bayesian inference. We demonstrate that our method can mitigate the effects of large MC mismodelings in the context of a realistic t¯tt¯t search, leading to corrected posterior distributions that better approximate the underlying truth-level spectra.
Published: 2022

23. The LHC Olympics 2020: A Community Challenge for Anomaly Detection in High Energy Physics

Author: Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, Freitas, Felipe F De, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Pottier, Luc Le, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urous, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, Yunus, Mikaeel, Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, Freitas, Felipe F De, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Pottier, Luc Le, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urous, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, and Yunus, Mikaeel
Abstract: A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection methods within this framework, it is essential to have standard datasets. To this end, we have created the LHC Olympics 2020, a community challenge accompanied by a set of simulated collider events. Participants in these Olympics have developed their methods using an R&D dataset and then tested them on black boxes: datasets with an unknown anomaly (or not). This paper will review the LHC Olympics 2020 challenge, including an overview of the competition, a description of methods deployed in the competition, lessons learned from the experience, and implications for data analyses with future datasets as well as future colliders.
Published: 2021

24. The LHC Olympics 2020 a community challenge for anomaly detection in high energy physics.

Author: Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, De Freitas, Felipe F, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Le Pottier, Luc, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Murphy, Christopher W, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urŏ, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, Yunus, Mikaeel, Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, De Freitas, Felipe F, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Le Pottier, Luc, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Murphy, Christopher W, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urŏ, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, and Yunus, Mikaeel
Abstract: A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection methods within this framework, it is essential to have standard datasets. To this end, we have created the LHC Olympics 2020, a community challenge accompanied by a set of simulated collider events. Participants in these Olympics have developed their methods using an R&D dataset and then tested them on black boxes: datasets with an unknown anomaly (or not). Methods made use of modern machine learning tools and were based on unsupervised learning (autoencoders, generative adversarial networks, normalizing flows), weakly supervised learning, and semi-supervised learning. This paper will review the LHC Olympics 2020 challenge, including an overview of the competition, a description of methods deployed in the competition, lessons learned from the experience, and implications for data analyses with future datasets as well as future colliders.
Published: 2021

25. The LHC Olympics 2020: A Community Challenge for Anomaly Detection in High Energy Physics

Author: Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, Freitas, Felipe F De, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Pottier, Luc Le, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urous, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, Yunus, Mikaeel, Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, Freitas, Felipe F De, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Pottier, Luc Le, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urous, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, and Yunus, Mikaeel
Abstract: A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection methods within this framework, it is essential to have standard datasets. To this end, we have created the LHC Olympics 2020, a community challenge accompanied by a set of simulated collider events. Participants in these Olympics have developed their methods using an R&D dataset and then tested them on black boxes: datasets with an unknown anomaly (or not). This paper will review the LHC Olympics 2020 challenge, including an overview of the competition, a description of methods deployed in the competition, lessons learned from the experience, and implications for data analyses with future datasets as well as future colliders.
Published: 2021

26. The LHC Olympics 2020 a community challenge for anomaly detection in high energy physics.

Author: Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, De Freitas, Felipe F, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Le Pottier, Luc, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Murphy, Christopher W, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urŏ, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, Yunus, Mikaeel, Kasieczka, Gregor, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H, Dai, Biwei, De Freitas, Felipe F, Dillon, Barry M, Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, DA, Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F, Khosa, Charanjit K, Komiske, Patrick, Le Pottier, Luc, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Murphy, Christopher W, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urŏ, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, and Yunus, Mikaeel
Abstract: A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection methods within this framework, it is essential to have standard datasets. To this end, we have created the LHC Olympics 2020, a community challenge accompanied by a set of simulated collider events. Participants in these Olympics have developed their methods using an R&D dataset and then tested them on black boxes: datasets with an unknown anomaly (or not). Methods made use of modern machine learning tools and were based on unsupervised learning (autoencoders, generative adversarial networks, normalizing flows), weakly supervised learning, and semi-supervised learning. This paper will review the LHC Olympics 2020 challenge, including an overview of the competition, a description of methods deployed in the competition, lessons learned from the experience, and implications for data analyses with future datasets as well as future colliders.
Published: 2021

27. Implications of $b\to s\ell^+\ell^-$ constraints on $b\to s\nu\bar\nu$ and $s\to d\nu\bar\nu$

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We investigate the consequences of deviations from the Standard Model observed in $b\to s\mu\mu$ transitions for flavour-changing neutral-current processes involving down-type quarks and neutrinos, under generic assumptions concerning the structure of New Physics. We derive the relevant Wilson coefficients within an effective field theory approach respecting the SM gauge symmetry, including right-handed currents and assuming a flavour structure based on approximate $U(2)$ symmetry, and only SM-like light neutrinos. We discuss correlations among $B \to K^{(*)} \nu \bar \nu$ and $K\to \pi \nu \bar \nu$ branching ratios in the case of linear Minimal Flavour Violation and in a more general framework, highlighting in each case the role played by various New Physics scenarios proposed to explain $b\to s\mu\mu$ deviations. This talk is based on arXiv:2005.03734., Comment: Contribution to the 2021 EW session of the 55th Rencontres de Moriond
Published: 2021

28. Bayesian Probabilistic Modelling for Four-Tops at the LHC

Author: Alvarez, Ezequiel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Lamagna, Federico, Szewc, Manuel, Alvarez, Ezequiel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Lamagna, Federico, and Szewc, Manuel
Abstract: Monte Carlo (MC) generators are crucial for analyzing data in particle collider experiments. However, often even a small mismatch between the MC simulations and the measurements can undermine the interpretation of the results. This is particularly important in the context of LHC searches for rare physics processes within and beyond the standard model (SM). One of the ultimate rare processes in the SM currently being explored at the LHC, $pp\to t\bar tt \bar t$ with its large multi-dimensional phase-space is an ideal testing ground to explore new ways to reduce the impact of potential MC mismodelling on experimental results. We propose a novel statistical method capable of disentangling the 4-top signal from the dominant backgrounds in the same-sign dilepton channel, while simultaneously correcting for possible MC imperfections in modelling of the most relevant discriminating observables -- the jet multiplicity distributions. A Bayesian mixture of multinomials is used to model the light-jet and $b$-jet multiplicities under the assumption of their conditional independence. The signal and background distributions generated from a deliberately mistuned MC simulator are used as model priors. The posterior distributions, as well as the signal and background fractions, are then learned from the data using Bayesian inference. We demonstrate that our method can mitigate the effects of large MC mismodellings in the context of a realistic $t\bar tt\bar t$ search, leading to corrected posterior distributions that better approximate the underlying truth-level spectra., Comment: Matches accepted version at PRD. 11 pages, 8 figures. This expanded version includes a toy model and explicit tests of the model validity for Four-Tops. Code available at https://github.com/ManuelSzewc/bayes-4tops
Published: 2021
Full Text: View/download PDF

29. Interplay of New Physics Effects in $(g-2)_\ell$ and $h\to\ell^+\ell^-$ -- Lessons from SMEFT

Author: Fajfer, Svjetlana, Kamenik, Jernej F., Tammaro, Michele, Fajfer, Svjetlana, Kamenik, Jernej F., and Tammaro, Michele
Abstract: We explore the interplay of New Physics (NP) effects in $(g-2)_\ell$ and $h \to \ell^+ \ell^-$ within the Standard Model Effective Field Theory (SMEFT) framework, including one-loop Renormalization Group (RG) evolution of the Wilson coefficients as well as matching to the observables below the electroweak symmetry breaking scale. We include both the leading dimension six chirality flipping operators including a Higgs and $SU(2)_L$ gauge bosons as well as four-fermion scalar and tensor operators, forming a closed operator set under the SMEFT RG equations. We compare present and future experimental sensitivity to different representative benchmark scenarios. We also consider two simple UV completions, a Two Higgs Doublet Model and a single scalar LeptoQuark extension of the SM, and show how tree level matching to SMEFT followed by the one-loop RG evolution down to the electroweak scale can reproduce with high accuracy the $(g-2)_\ell$ and $h \to \ell^+ \ell^-$ contributions obtained by the complete one- and even two-loop calculations in the full models., Comment: 24 pages, 9 figures; v2: corrected typos, added Rb result for electron anomalous moment
Published: 2021
Full Text: View/download PDF

30. Testing Lepton Flavour Universality in $\Upsilon (4S)$ Decays

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We propose a novel method to probe the persistent hints of Lepton Flavour Universality violation observed in semileptonic $B$ decays. Relying on the specific properties of the Belle II experiment, it consists in comparing the inclusive rates of $\Upsilon(4S) \to e^\pm \mu^\mp X$, $\Upsilon(4S) \to \mu^\pm \tau_{\rm had}^\mp X$ and $\Upsilon(4S) \to e^\pm \tau_{\rm had}^\mp X$. We show that such a measurement can be directly related to the ratio $R(X)_{\tau\ell} \equiv \Gamma (b\to X \tau \nu ) / \Gamma (b \to X \ell \nu)$ ($\ell=e$ or $\mu$), once appropriate experimental cuts are applied to suppress the effects of neutral $B$ mixing and leptons emitted through charm or tau decays. Such a measurement would thus constitute an additional and potentially competitive probe of Lepton Flavour Universality in $b\to c\ell\nu$ transitions, complementary to existing exclusive measurements, accessible in the Belle II environment., Comment: 8 pages, 1 figure
Published: 2021
Full Text: View/download PDF

31. Bump Hunting in Latent Space

Author: Bortolato, Blaž, Dillon, Barry M., Kamenik, Jernej F., Smolkovič, Aleks, Bortolato, Blaž, Dillon, Barry M., Kamenik, Jernej F., and Smolkovič, Aleks
Abstract: Unsupervised anomaly detection could be crucial in future analyses searching for rare phenomena in large datasets, as for example collected at the LHC. To this end, we introduce a physics inspired variational autoencoder (VAE) architecture which performs competitively and robustly on the LHC Olympics Machine Learning Challenge datasets. We demonstrate how embedding some physical observables directly into the VAE latent space, while at the same time keeping the classifier manifestly agnostic to them, can help to identify and characterise features in measured spectra as caused by the presence of anomalies in a dataset., Comment: Version as published
Published: 2021
Full Text: View/download PDF

32. The LHC Olympics 2020: A Community Challenge for Anomaly Detection in High Energy Physics

Author: Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H., Dai, Biwei, De Freitas, Felipe F., Dillon, Barry M., Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, D. A., Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F., Khosa, Charanjit K., Komiske, Patrick, Pottier, Luc Le, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urous, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, Yunus, Mikaeel, Kasieczka, Gregor, Nachman, Benjamin, Shih, David, Amram, Oz, Andreassen, Anders, Benkendorfer, Kees, Bortolato, Blaz, Brooijmans, Gustaaf, Canelli, Florencia, Collins, Jack H., Dai, Biwei, De Freitas, Felipe F., Dillon, Barry M., Dinu, Ioan-Mihail, Dong, Zhongtian, Donini, Julien, Duarte, Javier, Faroughy, D. A., Gonski, Julia, Harris, Philip, Kahn, Alan, Kamenik, Jernej F., Khosa, Charanjit K., Komiske, Patrick, Pottier, Luc Le, Martín-Ramiro, Pablo, Matevc, Andrej, Metodiev, Eric, Mikuni, Vinicius, Ochoa, Inês, Park, Sang Eon, Pierini, Maurizio, Rankin, Dylan, Sanz, Veronica, Sarda, Nilai, Seljak, Urous, Smolkovic, Aleks, Stein, George, Suarez, Cristina Mantilla, Szewc, Manuel, Thaler, Jesse, Tsan, Steven, Udrescu, Silviu-Marian, Vaslin, Louis, Vlimant, Jean-Roch, Williams, Daniel, and Yunus, Mikaeel
Abstract: A new paradigm for data-driven, model-agnostic new physics searches at colliders is emerging, and aims to leverage recent breakthroughs in anomaly detection and machine learning. In order to develop and benchmark new anomaly detection methods within this framework, it is essential to have standard datasets. To this end, we have created the LHC Olympics 2020, a community challenge accompanied by a set of simulated collider events. Participants in these Olympics have developed their methods using an R&D dataset and then tested them on black boxes: datasets with an unknown anomaly (or not). This paper will review the LHC Olympics 2020 challenge, including an overview of the competition, a description of methods deployed in the competition, lessons learned from the experience, and implications for data analyses with future datasets as well as future colliders., Comment: 108 pages, 53 figures, 3 tables
Published: 2021
Full Text: View/download PDF

33. Implications of $b\to s\ell^+\ell^-$ constraints on $b\to s\nu\bar\nu$ and $s\to d\nu\bar\nu$

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We investigate the consequences of deviations from the Standard Model observed in $b\to s\mu\mu$ transitions for flavour-changing neutral-current processes involving down-type quarks and neutrinos, under generic assumptions concerning the structure of New Physics. We derive the relevant Wilson coefficients within an effective field theory approach respecting the SM gauge symmetry, including right-handed currents and assuming a flavour structure based on approximate $U(2)$ symmetry, and only SM-like light neutrinos. We discuss correlations among $B \to K^{(*)} \nu \bar \nu$ and $K\to \pi \nu \bar \nu$ branching ratios in the case of linear Minimal Flavour Violation and in a more general framework, highlighting in each case the role played by various New Physics scenarios proposed to explain $b\to s\mu\mu$ deviations. This talk is based on arXiv:2005.03734., Comment: Contribution to the 2021 EW session of the 55th Rencontres de Moriond
Published: 2021

34. Bayesian Probabilistic Modelling for Four-Tops at the LHC

Author: Alvarez, Ezequiel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Lamagna, Federico, Szewc, Manuel, Alvarez, Ezequiel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Lamagna, Federico, and Szewc, Manuel
Abstract: Monte Carlo (MC) generators are crucial for analyzing data in particle collider experiments. However, often even a small mismatch between the MC simulations and the measurements can undermine the interpretation of the results. This is particularly important in the context of LHC searches for rare physics processes within and beyond the standard model (SM). One of the ultimate rare processes in the SM currently being explored at the LHC, $pp\to t\bar tt \bar t$ with its large multi-dimensional phase-space is an ideal testing ground to explore new ways to reduce the impact of potential MC mismodelling on experimental results. We propose a novel statistical method capable of disentangling the 4-top signal from the dominant backgrounds in the same-sign dilepton channel, while simultaneously correcting for possible MC imperfections in modelling of the most relevant discriminating observables -- the jet multiplicity distributions. A Bayesian mixture of multinomials is used to model the light-jet and $b$-jet multiplicities under the assumption of their conditional independence. The signal and background distributions generated from a deliberately mistuned MC simulator are used as model priors. The posterior distributions, as well as the signal and background fractions, are then learned from the data using Bayesian inference. We demonstrate that our method can mitigate the effects of large MC mismodellings in the context of a realistic $t\bar tt\bar t$ search, leading to corrected posterior distributions that better approximate the underlying truth-level spectra., Comment: Matches accepted version at PRD. 11 pages, 8 figures. This expanded version includes a toy model and explicit tests of the model validity for Four-Tops. Code available at https://github.com/ManuelSzewc/bayes-4tops
Published: 2021
Full Text: View/download PDF

35. Testing Lepton Flavour Universality in $\Upsilon (4S)$ Decays

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We propose a novel method to probe the persistent hints of Lepton Flavour Universality violation observed in semileptonic $B$ decays. Relying on the specific properties of the Belle II experiment, it consists in comparing the inclusive rates of $\Upsilon(4S) \to e^\pm \mu^\mp X$, $\Upsilon(4S) \to \mu^\pm \tau_{\rm had}^\mp X$ and $\Upsilon(4S) \to e^\pm \tau_{\rm had}^\mp X$. We show that such a measurement can be directly related to the ratio $R(X)_{\tau\ell} \equiv \Gamma (b\to X \tau \nu ) / \Gamma (b \to X \ell \nu)$ ($\ell=e$ or $\mu$), once appropriate experimental cuts are applied to suppress the effects of neutral $B$ mixing and leptons emitted through charm or tau decays. Such a measurement would thus constitute an additional and potentially competitive probe of Lepton Flavour Universality in $b\to c\ell\nu$ transitions, complementary to existing exclusive measurements, accessible in the Belle II environment., Comment: 8 pages, 1 figure
Published: 2021
Full Text: View/download PDF

36. Bump Hunting in Latent Space

Author: Bortolato, Blaž, Dillon, Barry M., Kamenik, Jernej F., Smolkovič, Aleks, Bortolato, Blaž, Dillon, Barry M., Kamenik, Jernej F., and Smolkovič, Aleks
Abstract: Unsupervised anomaly detection could be crucial in future analyses searching for rare phenomena in large datasets, as for example collected at the LHC. To this end, we introduce a physics inspired variational autoencoder (VAE) architecture which performs competitively and robustly on the LHC Olympics Machine Learning Challenge datasets. We demonstrate how embedding some physical observables directly into the VAE latent space, while at the same time keeping the classifier manifestly agnostic to them, can help to identify and characterise features in measured spectra as caused by the presence of anomalies in a dataset., Comment: Version as published
Published: 2021
Full Text: View/download PDF

37. Learning Latent Jet Structure

Author: Dillon, Barry M, Faroughy, Darius A; https://orcid.org/0000-0002-4027-5477, Kamenik, Jernej F; https://orcid.org/0000-0001-5183-8637, Szewc, Manuel, Dillon, Barry M, Faroughy, Darius A; https://orcid.org/0000-0002-4027-5477, Kamenik, Jernej F; https://orcid.org/0000-0001-5183-8637, and Szewc, Manuel
Abstract: We summarize our recent work on how to infer on jet formation processes directly from substructure data using generative statistical models. We recount in detail how to cast jet substructure observables’ measurements in terms of Bayesian mixed membership models, in particular Latent Dirichlet Allocation. Using a mixed sample of QCD and boosted tt¯ jet events and focusing on the primary Lund plane observable basis for event measurements, we show how using educated priors on the latent distributions allows to infer on the underlying physical processes in a semi-supervised way.
Published: 2021

38. Learning the latent structure of collider events

Author: Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., and Szewc, Manuel
Abstract: We describe a technique to learn the underlying structure of collider events directly from the data, without having a particular theoretical model in mind. It allows to infer aspects of the theoretical model that may have given rise to this structure, and can be used to cluster or classify the events for analysis purposes. The unsupervised machine-learning technique is based on the probabilistic (Bayesian) generative model of Latent Dirichlet Allocation. We pair the model with an approximate inference algorithm called Variational Inference, which we then use to extract the latent probability distributions describing the learned underlying structure of collider events. We provide a detailed systematic study of the technique using two example scenarios to learn the latent structure of di-jet event samples made up of QCD background events and either $t\bar{t}$ or hypothetical $W' \to (\phi \to WW) W$ signal events., Comment: 38 pages, 23 figures
Published: 2020
Full Text: View/download PDF

39. Learning the latent structure of collider events

Author: Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., and Szewc, Manuel
Abstract: We describe a technique to learn the underlying structure of collider events directly from the data, without having a particular theoretical model in mind. It allows to infer aspects of the theoretical model that may have given rise to this structure, and can be used to cluster or classify the events for analysis purposes. The unsupervised machine-learning technique is based on the probabilistic (Bayesian) generative model of Latent Dirichlet Allocation. We pair the model with an approximate inference algorithm called Variational Inference, which we then use to extract the latent probability distributions describing the learned underlying structure of collider events. We provide a detailed systematic study of the technique using two example scenarios to learn the latent structure of di-jet event samples made up of QCD background events and either $t\bar{t}$ or hypothetical $W' \to (\phi \to WW) W$ signal events., Comment: 38 pages, 23 figures
Published: 2020
Full Text: View/download PDF

40. Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2

Author: Abdallah, Waleed, AbdusSalam, Shehu, Ahmadov, Azar, Ahriche, Amine, Alguero, Gaël, Allanach, Benjamin C., Araz, Jack Y., Arbey, Alexandre, Arina, Chiara, Athron, Peter, Bagnaschi, Emanuele, Bai, Yang, Baker, Michael J., Balazs, Csaba, Barducci, Daniele, Bechtle, Philip, Bharucha, Aoife, Buckley, Andy, Butterworth, Jonathan, Cai, Haiying, Campagnari, Claudio, Cesarotti, Cari, Chrzaszcz, Marcin, Coccaro, Andrea, Conte, Eric, Cornell, Jonathan M., Corpe, Louie Dartmoor, Danninger, Matthias, Darmé, Luc, Deandrea, Aldo, Desai, Nishita, Dillon, Barry, Doglioni, Caterina, Dutta, Juhi, Ellis, John R., Ellis, Sebastian, Fassi, Farida, Feickert, Matthew, Fernandez, Nicolas, Fichet, Sylvain, Kamenik, Jernej F., Flacke, Thomas, Fuks, Benjamin, Geiser, Achim, Genest, Marie-Hélène, Ghalsasi, Akshay, Gonzalo, Tomas, Goodsell, Mark, Gori, Stefania, Gras, Philippe, Greljo, Admir, Guadagnoli, Diego, Heinemeyer, Sven, Heinrich, Lukas A., Heisig, Jan, Hong, Deog Ki, Hryn'ova, Tetiana, Huitu, Katri, Ilten, Philip, Ismail, Ahmed, Jueid, Adil, Kahlhoefer, Felix, Kalinowski, Jan, Kar, Deepak, Kats, Yevgeny, Khosa, Charanjit K., Khoze, Valeri, Klingl, Tobias, Ko, Pyungwon, Kong, Kyoungchul, Kotlarski, Wojciech, Krämer, Michael, Kraml, Sabine, Kulkarni, Suchita, Kvellestad, Anders, Lange, Clemens, Lassila-Perini, Kati, Lee, Seung J., Lessa, Andre, Liu, Zhen, Iglesias, Lara Lloret, Lorenz, Jeanette M., MacDonell, Danika, Mahmoudi, Farvah, Mamuzic, Judita, Marini, Andrea C., Markowitz, Pete, del Arbol, Pablo Martinez Ruiz, Miller, David, Mitsou, Vasiliki, Moretti, Stefano, Nardecchia, Marco, Neshatpour, Siavash, Nhung, Dao Thi, Osland, Per, Owen, Patrick H., Panella, Orlando, Pankov, Alexander, Park, Myeonghun, Porod, Werner, Price, Darren, Prosper, Harrison, Raklev, Are, Reuter, Jürgen, Reyes-González, Humberto, Rizzo, Thomas, Robens, Tania, Rojo, Juan, Rosiek, Janusz A., Ruchayskiy, Oleg, Sanz, Veronica, Schmidt-Hoberg, Kai, Scott, Pat, Sekmen, Sezen, Sengupta, Dipan, Sexton-Kennedy, Elizabeth, Shao, Hua-Sheng, Shin, Seodong, Silvestrini, Luca, Singh, Ritesh, Sinha, Sukanya, Sonneveld, Jory, Soreq, Yotam, Stark, Giordon H., Stefaniak, Tim, Thaler, Jesse, Torre, Riccardo, Torrente-Lujan, Emilio, Unel, Gokhan, Vignaroli, Natascia, Waltenberger, Wolfgang, Wardle, Nicholas, Watt, Graeme, Weiglein, Georg, White, Martin J., Williamson, Sophie L., Wittbrodt, Jonas, Wu, Lei, Wunsch, Stefan, You, Tevong, Zhang, Yang, Zurita, José, Abdallah, Waleed, AbdusSalam, Shehu, Ahmadov, Azar, Ahriche, Amine, Alguero, Gaël, Allanach, Benjamin C., Araz, Jack Y., Arbey, Alexandre, Arina, Chiara, Athron, Peter, Bagnaschi, Emanuele, Bai, Yang, Baker, Michael J., Balazs, Csaba, Barducci, Daniele, Bechtle, Philip, Bharucha, Aoife, Buckley, Andy, Butterworth, Jonathan, Cai, Haiying, Campagnari, Claudio, Cesarotti, Cari, Chrzaszcz, Marcin, Coccaro, Andrea, Conte, Eric, Cornell, Jonathan M., Corpe, Louie Dartmoor, Danninger, Matthias, Darmé, Luc, Deandrea, Aldo, Desai, Nishita, Dillon, Barry, Doglioni, Caterina, Dutta, Juhi, Ellis, John R., Ellis, Sebastian, Fassi, Farida, Feickert, Matthew, Fernandez, Nicolas, Fichet, Sylvain, Kamenik, Jernej F., Flacke, Thomas, Fuks, Benjamin, Geiser, Achim, Genest, Marie-Hélène, Ghalsasi, Akshay, Gonzalo, Tomas, Goodsell, Mark, Gori, Stefania, Gras, Philippe, Greljo, Admir, Guadagnoli, Diego, Heinemeyer, Sven, Heinrich, Lukas A., Heisig, Jan, Hong, Deog Ki, Hryn'ova, Tetiana, Huitu, Katri, Ilten, Philip, Ismail, Ahmed, Jueid, Adil, Kahlhoefer, Felix, Kalinowski, Jan, Kar, Deepak, Kats, Yevgeny, Khosa, Charanjit K., Khoze, Valeri, Klingl, Tobias, Ko, Pyungwon, Kong, Kyoungchul, Kotlarski, Wojciech, Krämer, Michael, Kraml, Sabine, Kulkarni, Suchita, Kvellestad, Anders, Lange, Clemens, Lassila-Perini, Kati, Lee, Seung J., Lessa, Andre, Liu, Zhen, Iglesias, Lara Lloret, Lorenz, Jeanette M., MacDonell, Danika, Mahmoudi, Farvah, Mamuzic, Judita, Marini, Andrea C., Markowitz, Pete, del Arbol, Pablo Martinez Ruiz, Miller, David, Mitsou, Vasiliki, Moretti, Stefano, Nardecchia, Marco, Neshatpour, Siavash, Nhung, Dao Thi, Osland, Per, Owen, Patrick H., Panella, Orlando, Pankov, Alexander, Park, Myeonghun, Porod, Werner, Price, Darren, Prosper, Harrison, Raklev, Are, Reuter, Jürgen, Reyes-González, Humberto, Rizzo, Thomas, Robens, Tania, Rojo, Juan, Rosiek, Janusz A., Ruchayskiy, Oleg, Sanz, Veronica, Schmidt-Hoberg, Kai, Scott, Pat, Sekmen, Sezen, Sengupta, Dipan, Sexton-Kennedy, Elizabeth, Shao, Hua-Sheng, Shin, Seodong, Silvestrini, Luca, Singh, Ritesh, Sinha, Sukanya, Sonneveld, Jory, Soreq, Yotam, Stark, Giordon H., Stefaniak, Tim, Thaler, Jesse, Torre, Riccardo, Torrente-Lujan, Emilio, Unel, Gokhan, Vignaroli, Natascia, Waltenberger, Wolfgang, Wardle, Nicholas, Watt, Graeme, Weiglein, Georg, White, Martin J., Williamson, Sophie L., Wittbrodt, Jonas, Wu, Lei, Wunsch, Stefan, You, Tevong, Zhang, Yang, and Zurita, José
Abstract: We report on the status of efforts to improve the reinterpretation of searches and measurements at the LHC in terms of models for new physics, in the context of the LHC Reinterpretation Forum. We detail current experimental offerings in direct searches for new particles, measurements, technical implementations and Open Data, and provide a set of recommendations for further improving the presentation of LHC results in order to better enable reinterpretation in the future. We also provide a brief description of existing software reinterpretation frameworks and recent global analyses of new physics that make use of the current data., Comment: 58 pages, minor revision following comments from SciPost referees
Published: 2020
Full Text: View/download PDF

41. Implications of $b\to s\mu\mu$ Anomalies for Future Measurements of $B \to K^{(*)} \nu \bar \nu$ and $K\to \pi \nu \bar \nu$

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We investigate the consequences of deviations from the Standard Model observed in $b\to s\mu\mu$ transitions for flavour-changing neutral-current processes involving down-type quarks and neutrinos. We derive the relevant Wilson coefficients within an effective field theory approach respecting the SM gauge symmetry, including right-handed currents, a flavour structure based on approximate $U(2)$ symmetry, and assuming only SM-like light neutrinos. We discuss correlations among $B \to K^{(*)} \nu \bar \nu$ and $K\to \pi \nu \bar \nu$ branching ratios in the case of linear Minimal Flavour Violation and in a more general framework, highlighting in each case the role played by various New Physics scenarios proposed to explain $b\to s\mu\mu$ deviations., Comment: 7 pages, 2 figures
Published: 2020
Full Text: View/download PDF

42. Optimized probes of $CP$-odd effects in the $t \bar{t} h$ process at hadron colliders

Author: Bortolato, Blaž, Kamenik, Jernej F., Košnik, Nejc, Smolkovič, Aleks, Bortolato, Blaž, Kamenik, Jernej F., Košnik, Nejc, and Smolkovič, Aleks
Abstract: We use machine learning (ML) and non-ML techniques to study optimized $CP$-odd observables, directly and maximally sensitive to the $CP$-odd $i \tilde \kappa \bar t \gamma^5 t h$ interaction at the LHC and prospective future hadron colliders using the final state with a Higgs boson and a top quark pair, $pp\to t\bar t h$, followed by semileptonic $t$ decays. We perform phase-space optimization of manifestly $CP$-odd observables ($\boldsymbol \omega$), sensitive to the sign of $\tilde \kappa$, and constructed from experimentally accessible final state momenta. We identify a simple optimized linear combination $\boldsymbol \alpha\cdot \boldsymbol\omega$ that gives similar sensitivity as the studied fully fledged ML models. Using $\boldsymbol\alpha\cdot \boldsymbol\omega$ we project the expected sensitivities to $\tilde \kappa$ at HL-LHC, HE-LHC, and FCC-hh., Comment: As published
Published: 2020
Full Text: View/download PDF

43. Light Majorana Neutrinos in (Semi)invisible Meson Decays

Author: Bortolato, Blaz, Kamenik, Jernej F., Bortolato, Blaz, and Kamenik, Jernej F.
Abstract: We reconsider decays of pseudoscalar mesons (P) to neutrino pairs and possibly additional photons in presence of (light) Majorana neutrinos. For this purpose we derive a model-independent general parametrization of neutrino mass matrices with physically interpretable and irreducible set of parameters. The parametrization is valid for any number of neutrinos and interpolates smoothly between the heavy Majorana and the (pseudo)Dirac neutrino limits. We apply the new parametrization to the study of $P \rightarrow \nu \nu$ and $P \rightarrow \nu \nu \gamma$ decays within the SM extended by additional singlet fermions. We update the SM predictions for the branching ratios of $B_{s,d} \rightarrow \nu \nu \gamma$ and discuss the sensitivity of the $B_{s,d} \rightarrow E_{\rm miss} (\gamma)$ decays to neutrino mass and mixing parameters., Comment: 20 pages, 6 figures, added one appendix, conclusions unchanged, version as published
Published: 2020
Full Text: View/download PDF

44. Learning the latent structure of collider events

Author: Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Szewc, Manuel, Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., and Szewc, Manuel
Abstract: We describe a technique to learn the underlying structure of collider events directly from the data, without having a particular theoretical model in mind. It allows to infer aspects of the theoretical model that may have given rise to this structure, and can be used to cluster or classify the events for analysis purposes. The unsupervised machine-learning technique is based on the probabilistic (Bayesian) generative model of Latent Dirichlet Allocation. We pair the model with an approximate inference algorithm called Variational Inference, which we then use to extract the latent probability distributions describing the learned underlying structure of collider events. We provide a detailed systematic study of the technique using two example scenarios to learn the latent structure of di-jet event samples made up of QCD background events and either $t\bar{t}$ or hypothetical $W' \to (\phi \to WW) W$ signal events., Comment: 38 pages, 23 figures
Published: 2020
Full Text: View/download PDF

45. Implications of $b\to s\mu\mu$ Anomalies for Future Measurements of $B \to K^{(*)} \nu \bar \nu$ and $K\to \pi \nu \bar \nu$

Author: Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., Novoa-Brunet, Martín, Descotes-Genon, Sébastien, Fajfer, Svjetlana, Kamenik, Jernej F., and Novoa-Brunet, Martín
Abstract: We investigate the consequences of deviations from the Standard Model observed in $b\to s\mu\mu$ transitions for flavour-changing neutral-current processes involving down-type quarks and neutrinos. We derive the relevant Wilson coefficients within an effective field theory approach respecting the SM gauge symmetry, including right-handed currents, a flavour structure based on approximate $U(2)$ symmetry, and assuming only SM-like light neutrinos. We discuss correlations among $B \to K^{(*)} \nu \bar \nu$ and $K\to \pi \nu \bar \nu$ branching ratios in the case of linear Minimal Flavour Violation and in a more general framework, highlighting in each case the role played by various New Physics scenarios proposed to explain $b\to s\mu\mu$ deviations., Comment: 7 pages, 2 figures
Published: 2020
Full Text: View/download PDF

46. Reinterpretation of LHC Results for New Physics: Status and Recommendations after Run 2

Author: Abdallah, Waleed, AbdusSalam, Shehu, Ahmadov, Azar, Ahriche, Amine, Alguero, Gaël, Allanach, Benjamin C., Araz, Jack Y., Arbey, Alexandre, Arina, Chiara, Athron, Peter, Bagnaschi, Emanuele, Bai, Yang, Baker, Michael J., Balazs, Csaba, Barducci, Daniele, Bechtle, Philip, Bharucha, Aoife, Buckley, Andy, Butterworth, Jonathan, Cai, Haiying, Campagnari, Claudio, Cesarotti, Cari, Chrzaszcz, Marcin, Coccaro, Andrea, Conte, Eric, Cornell, Jonathan M., Corpe, Louie Dartmoor, Danninger, Matthias, Darmé, Luc, Deandrea, Aldo, Desai, Nishita, Dillon, Barry, Doglioni, Caterina, Dutta, Juhi, Ellis, John R., Ellis, Sebastian, Fassi, Farida, Feickert, Matthew, Fernandez, Nicolas, Fichet, Sylvain, Kamenik, Jernej F., Flacke, Thomas, Fuks, Benjamin, Geiser, Achim, Genest, Marie-Hélène, Ghalsasi, Akshay, Gonzalo, Tomas, Goodsell, Mark, Gori, Stefania, Gras, Philippe, Greljo, Admir, Guadagnoli, Diego, Heinemeyer, Sven, Heinrich, Lukas A., Heisig, Jan, Hong, Deog Ki, Hryn'ova, Tetiana, Huitu, Katri, Ilten, Philip, Ismail, Ahmed, Jueid, Adil, Kahlhoefer, Felix, Kalinowski, Jan, Kar, Deepak, Kats, Yevgeny, Khosa, Charanjit K., Khoze, Valeri, Klingl, Tobias, Ko, Pyungwon, Kong, Kyoungchul, Kotlarski, Wojciech, Krämer, Michael, Kraml, Sabine, Kulkarni, Suchita, Kvellestad, Anders, Lange, Clemens, Lassila-Perini, Kati, Lee, Seung J., Lessa, Andre, Liu, Zhen, Iglesias, Lara Lloret, Lorenz, Jeanette M., MacDonell, Danika, Mahmoudi, Farvah, Mamuzic, Judita, Marini, Andrea C., Markowitz, Pete, del Arbol, Pablo Martinez Ruiz, Miller, David, Mitsou, Vasiliki, Moretti, Stefano, Nardecchia, Marco, Neshatpour, Siavash, Nhung, Dao Thi, Osland, Per, Owen, Patrick H., Panella, Orlando, Pankov, Alexander, Park, Myeonghun, Porod, Werner, Price, Darren, Prosper, Harrison, Raklev, Are, Reuter, Jürgen, Reyes-González, Humberto, Rizzo, Thomas, Robens, Tania, Rojo, Juan, Rosiek, Janusz A., Ruchayskiy, Oleg, Sanz, Veronica, Schmidt-Hoberg, Kai, Scott, Pat, Sekmen, Sezen, Sengupta, Dipan, Sexton-Kennedy, Elizabeth, Shao, Hua-Sheng, Shin, Seodong, Silvestrini, Luca, Singh, Ritesh, Sinha, Sukanya, Sonneveld, Jory, Soreq, Yotam, Stark, Giordon H., Stefaniak, Tim, Thaler, Jesse, Torre, Riccardo, Torrente-Lujan, Emilio, Unel, Gokhan, Vignaroli, Natascia, Waltenberger, Wolfgang, Wardle, Nicholas, Watt, Graeme, Weiglein, Georg, White, Martin J., Williamson, Sophie L., Wittbrodt, Jonas, Wu, Lei, Wunsch, Stefan, You, Tevong, Zhang, Yang, Zurita, José, Abdallah, Waleed, AbdusSalam, Shehu, Ahmadov, Azar, Ahriche, Amine, Alguero, Gaël, Allanach, Benjamin C., Araz, Jack Y., Arbey, Alexandre, Arina, Chiara, Athron, Peter, Bagnaschi, Emanuele, Bai, Yang, Baker, Michael J., Balazs, Csaba, Barducci, Daniele, Bechtle, Philip, Bharucha, Aoife, Buckley, Andy, Butterworth, Jonathan, Cai, Haiying, Campagnari, Claudio, Cesarotti, Cari, Chrzaszcz, Marcin, Coccaro, Andrea, Conte, Eric, Cornell, Jonathan M., Corpe, Louie Dartmoor, Danninger, Matthias, Darmé, Luc, Deandrea, Aldo, Desai, Nishita, Dillon, Barry, Doglioni, Caterina, Dutta, Juhi, Ellis, John R., Ellis, Sebastian, Fassi, Farida, Feickert, Matthew, Fernandez, Nicolas, Fichet, Sylvain, Kamenik, Jernej F., Flacke, Thomas, Fuks, Benjamin, Geiser, Achim, Genest, Marie-Hélène, Ghalsasi, Akshay, Gonzalo, Tomas, Goodsell, Mark, Gori, Stefania, Gras, Philippe, Greljo, Admir, Guadagnoli, Diego, Heinemeyer, Sven, Heinrich, Lukas A., Heisig, Jan, Hong, Deog Ki, Hryn'ova, Tetiana, Huitu, Katri, Ilten, Philip, Ismail, Ahmed, Jueid, Adil, Kahlhoefer, Felix, Kalinowski, Jan, Kar, Deepak, Kats, Yevgeny, Khosa, Charanjit K., Khoze, Valeri, Klingl, Tobias, Ko, Pyungwon, Kong, Kyoungchul, Kotlarski, Wojciech, Krämer, Michael, Kraml, Sabine, Kulkarni, Suchita, Kvellestad, Anders, Lange, Clemens, Lassila-Perini, Kati, Lee, Seung J., Lessa, Andre, Liu, Zhen, Iglesias, Lara Lloret, Lorenz, Jeanette M., MacDonell, Danika, Mahmoudi, Farvah, Mamuzic, Judita, Marini, Andrea C., Markowitz, Pete, del Arbol, Pablo Martinez Ruiz, Miller, David, Mitsou, Vasiliki, Moretti, Stefano, Nardecchia, Marco, Neshatpour, Siavash, Nhung, Dao Thi, Osland, Per, Owen, Patrick H., Panella, Orlando, Pankov, Alexander, Park, Myeonghun, Porod, Werner, Price, Darren, Prosper, Harrison, Raklev, Are, Reuter, Jürgen, Reyes-González, Humberto, Rizzo, Thomas, Robens, Tania, Rojo, Juan, Rosiek, Janusz A., Ruchayskiy, Oleg, Sanz, Veronica, Schmidt-Hoberg, Kai, Scott, Pat, Sekmen, Sezen, Sengupta, Dipan, Sexton-Kennedy, Elizabeth, Shao, Hua-Sheng, Shin, Seodong, Silvestrini, Luca, Singh, Ritesh, Sinha, Sukanya, Sonneveld, Jory, Soreq, Yotam, Stark, Giordon H., Stefaniak, Tim, Thaler, Jesse, Torre, Riccardo, Torrente-Lujan, Emilio, Unel, Gokhan, Vignaroli, Natascia, Waltenberger, Wolfgang, Wardle, Nicholas, Watt, Graeme, Weiglein, Georg, White, Martin J., Williamson, Sophie L., Wittbrodt, Jonas, Wu, Lei, Wunsch, Stefan, You, Tevong, Zhang, Yang, and Zurita, José
Abstract: We report on the status of efforts to improve the reinterpretation of searches and measurements at the LHC in terms of models for new physics, in the context of the LHC Reinterpretation Forum. We detail current experimental offerings in direct searches for new particles, measurements, technical implementations and Open Data, and provide a set of recommendations for further improving the presentation of LHC results in order to better enable reinterpretation in the future. We also provide a brief description of existing software reinterpretation frameworks and recent global analyses of new physics that make use of the current data., Comment: 58 pages, minor revision following comments from SciPost referees
Published: 2020
Full Text: View/download PDF

47. Probing the $CP$ nature of the top quark Yukawa at hadron colliders

Author: Faroughy, Darius A., Kamenik, Jernej F., Košnik, Nejc, Smolkovič, Aleks, Faroughy, Darius A., Kamenik, Jernej F., Košnik, Nejc, and Smolkovič, Aleks
Abstract: We analyze the prospects of probing the $CP$-odd $i \tilde \kappa \bar t \gamma^5 t h$ interaction at the LHC and its projected upgrades, the high-luminosity and high-energy LHC, directly using associated on-shell Higgs boson and top quark or top quark pair production. To this end we first construct a $CP$-odd observable based on top quark polarization in $W b \to t h$ scattering with optimal linear sensitivity to $\tilde \kappa$. For the corresponding hadronic process $pp \to t h j$ we present a method of extracting the phase-space dependent weight function that allows to retain close to optimal sensitivity to $\tilde{\kappa}$. We project future sensitivity to the signal in $pp \to t(\to \ell \nu b )h(\to b\bar b) j$. Based on these insights we propose novel $CP$-odd observables for top quark pair production in association with the Higgs, $pp \to t \bar t h$, with semileptonically decaying tops and $h\to \bar b b$, that rely solely on measuring the momenta of leptons and $b$-jets from the decaying tops without having to distinguish the charge of the $b$-jets. Among the many possibilities we single out an observable that can potentially probe $\tilde \kappa \sim 0.5$ at the high-luminosity LHC and $\tilde \kappa \sim 0.1$ at high-energy LHC with $2\sigma$ confidence., Comment: Updated sensitivity plots due to better data samples
Published: 2019
Full Text: View/download PDF

48. Probing the $CP$ nature of the top quark Yukawa at hadron colliders

Author: Faroughy, Darius A., Kamenik, Jernej F., Košnik, Nejc, Smolkovič, Aleks, Faroughy, Darius A., Kamenik, Jernej F., Košnik, Nejc, and Smolkovič, Aleks
Abstract: We analyze the prospects of probing the $CP$-odd $i \tilde \kappa \bar t \gamma^5 t h$ interaction at the LHC and its projected upgrades, the high-luminosity and high-energy LHC, directly using associated on-shell Higgs boson and top quark or top quark pair production. To this end we first construct a $CP$-odd observable based on top quark polarization in $W b \to t h$ scattering with optimal linear sensitivity to $\tilde \kappa$. For the corresponding hadronic process $pp \to t h j$ we present a method of extracting the phase-space dependent weight function that allows to retain close to optimal sensitivity to $\tilde{\kappa}$. We project future sensitivity to the signal in $pp \to t(\to \ell \nu b )h(\to b\bar b) j$. Based on these insights we propose novel $CP$-odd observables for top quark pair production in association with the Higgs, $pp \to t \bar t h$, with semileptonically decaying tops and $h\to \bar b b$, that rely solely on measuring the momenta of leptons and $b$-jets from the decaying tops without having to distinguish the charge of the $b$-jets. Among the many possibilities we single out an observable that can potentially probe $\tilde \kappa \sim 0.5$ at the high-luminosity LHC and $\tilde \kappa \sim 0.1$ at high-energy LHC with $2\sigma$ confidence., Comment: Updated sensitivity plots due to better data samples
Published: 2019
Full Text: View/download PDF

49. Uncovering latent jet substructure

Author: Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Dillon, Barry M., Faroughy, Darius A., and Kamenik, Jernej F.
Abstract: We apply techniques from Bayesian generative statistical modeling to uncover hidden features in jet substructure observables that discriminate between different a priori unknown underlying short distance physical processes in multi-jet events. In particular, we use a mixed membership model known as Latent Dirichlet Allocation to build a data-driven unsupervised top-quark tagger and $t\bar t$ event classifier. We compare our proposal to existing traditional and machine learning approaches to top jet tagging. Finally, employing a toy vector-scalar boson model as a benchmark, we demonstrate the potential for discovering New Physics signatures in multi-jet events in a model independent and unsupervised way., Comment: 8 pages, 3 figures; v2: matches published version. Additional clarifying comments added in sections I and II. Updated references
Published: 2019
Full Text: View/download PDF

50. Uncovering latent jet substructure

Author: Dillon, Barry M., Faroughy, Darius A., Kamenik, Jernej F., Dillon, Barry M., Faroughy, Darius A., and Kamenik, Jernej F.
Abstract: We apply techniques from Bayesian generative statistical modeling to uncover hidden features in jet substructure observables that discriminate between different a priori unknown underlying short distance physical processes in multi-jet events. In particular, we use a mixed membership model known as Latent Dirichlet Allocation to build a data-driven unsupervised top-quark tagger and $t\bar t$ event classifier. We compare our proposal to existing traditional and machine learning approaches to top jet tagging. Finally, employing a toy vector-scalar boson model as a benchmark, we demonstrate the potential for discovering New Physics signatures in multi-jet events in a model independent and unsupervised way., Comment: 8 pages, 3 figures; v2: matches published version. Additional clarifying comments added in sections I and II. Updated references
Published: 2019
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Publication Year Range

Publication Type

Database

Publisher

198 results on '"Kamenik, Jernej F."'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources