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1. Release note: VBFNLO 3.0

Author

Baglio, Julien, Campanario, Francisco, Chen, Tinghua, Dietrich-Siebert, Heiko, Figy, Terrance, Kerner, Matthias, Kubocz, Michael, Le, Duc Ninh, Löschner, Maximilian, Plätzer, Simon, Rauch, Michael, Rosario, Ivan, Roth, Robin, and Zeppenfeld, Dieter

Published
2024
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3. VBSCan Mid-Term Scientific Meeting

Author

Baglio, Julien, Ballestrero, Alessandro, Bellan, Riccardo, Bittrich, Carsten, Brass, Simon, Brivio, Ilaria, Franzosi, Diogo Buarque, Charlot, Claude, Covarelli, Roberto, Cuevas, Javier, Gallinaro, Michele, Gomez-Ambrosio, Raquel, Govoni, Pietro, Grossi, Michele, Karlberg, Alexander, Topaksu, Aysel Kayis, Kersevan, Borut, Kilian, Wolfgang, Kirchgaesser, Patrick, Delgado, Rafael L., Lohwasser, Kristin, Martinez, Narei Lorenzo, Maina, Ezio, Mattelaer, Olivier, Mehta, Ankita, Milenovic, Predrag, Ninh, Le Duc, Novak, Jakob, Ortona, Giacomo, Ozdemir, Kadri, Papaefstathiou, Andreas, Pasztor, Gabriella, Pellen, Mathieu, Pelliccioli, Giovanni, Petridou, Chara, Platzer, Simon, Puljak, Ivica, Rebuzzi, Daniela, Reuter, Jurgen, Ruiz, Richard, Sampsonidou, Despoina, Sauvan, Emmanuel, Shil, Sujay, Slawinska, Magdalena, Sommer, Philip, Szleper, Michal, Todt, Stefanie, Valsecchi, Davide, Varouchas, Dimitris, Vischia, Pietro, and Zaro, Marco

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment
Abstract

This document summarises the talks and discussions happened during the VBSCan Mid-Term Scientific Meeting workshop. The VBSCan COST action is dedicated to the coordinated study of vector boson scattering (VBS) from the phenomenological and experimental point of view, for the best exploitation of the data that will be delivered by existing and future particle colliders., Comment: Editors: I.Brivio, C.Charlot, R.Covarelli, R.L.Delgado, K.Lohwasser, M.Pellen, M.Slawinska, G.Ortona, K.Ozdemir, C.Petridou, I.Puljak, M.Zaro. Proceedings for the VBSCan Mid-Term Scientific Meeting of the VBSCan COST action

Published
2020

4. Herwig 7.2 Release Note

Author

Bellm, Johannes, Bewick, Gavin, Ravasio, Silvia Ferrario, Gieseke, Stefan, Grellscheid, David, Kirchgaesser, Patrick, Masouminia, Mohammad R., Nail, Graeme, Papaefstathiou, Andreas, Platzer, Simon, Rauch, Michael, Reuschle, Christian, Richardson, Peter, Seymour, Michael H., Siodmok, Andrzej, and Webster, Stephen

Subjects
High Energy Physics - Phenomenology
Abstract

A new release of the Monte Carlo event generator Herwig (version 7.2) is now available. This version introduces a number of improvements, notably: improvements to the simulation of multiple-parton interactions, including diffractive processes; a new model for baryonic colour re-connection; spin correlations in both the dipole and angular-ordered parton showers; improvements to strangeness production; an improved choice of evolution variable in the angular-ordered parton shower; support for generic Lorentz structures in BSM models., Comment: 7 pages, 5 figures. Herwig is available from https://herwig.hepforge.org. arXiv admin note: text overlap with arXiv:1705.06919

Published
2019
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6. Event generators for high-energy physics experiments

Author

Campbell, J. M., primary, Diefenthaler, M., additional, Hobbs, T. J., additional, Höche, Stefan, additional, Isaacson, Joshua, additional, Kling, Felix, additional, Mrenna, Stephen, additional, Reuter, J., additional, Alioli, S., additional, Andersen, J. R., additional, Andreopoulos, C., additional, Ankowski, A. M., additional, Aschenauer, Elke Caroline, additional, Ashkenazi, A., additional, Baker, M. D., additional, Barrow, Joshua L., additional, van Beekveld, Melissa, additional, Bewick, Gavin, additional, Bhattacharya, S., additional, Bierlich, Christian, additional, Bothmann, Enrico, additional, Bredt, P., additional, Broggio, A., additional, Buckley, Andy, additional, Butter, A., additional, Butterworth, Jonathan Mark, additional, Byrne, E. P., additional, Carloni-Calame, Carlo, additional, Chakraborty, Smita, additional, Chen, X., additional, Chiesa, M., additional, Childers, J. T., additional, Cruz-Martinez, J., additional, Currie, J., additional, Darvishi, N., additional, Dasgupta, M., additional, Denner, A., additional, Dreyer, F. A., additional, Dytman, S., additional, El-Menoufi, Basem Kamal, additional, Engel, Tim, additional, Ferrario Ravasio, Silvia, additional, Figueroa, Daniel, additional, Flower, L., additional, Forshaw, J. R., additional, Frederix, Rikkert, additional, Friedland, Alex, additional, Frixione, Stefano, additional, Gallagher, H., additional, Gallmeister, K., additional, Gardiner, Simon, additional, Gauld, Rhorry, additional, Gaunt, Jonathan, additional, Gavardi, A., additional, Gehrmann, T., additional, Gehrmann-De Ridder, Aude, additional, Gellersen, Leif, additional, Giele, Walter, additional, Gieseke, Stefan, additional, Giuli, Francesco, additional, Glover, E. W. N., additional, Grazzini, Massimiliano, additional, Grohsjean, A., additional, Gütschow, Christian, additional, Hamilton, Keith, additional, Han, T., additional, Hatcher, R., additional, Heinrich, G., additional, Helenius, Ilkka, additional, Hen, O., additional, Hirschi, Valentin, additional, Höfer, M., additional, Holguin, J., additional, Huss, Alexander, additional, Ilten, Philip, additional, Jadach, Stanislaw, additional, Jentsch, A., additional, Jones, S. P., additional, Ju, W., additional, Kallweit, Stefan, additional, Karlberg, Alexander, additional, Katori, T., additional, Kerner, Matthias, additional, Kilian, C., additional, Kirchgaeßer, M. M., additional, Klein, S., additional, Knobbe, Max, additional, Krause, Claudius, additional, Krauss, Frank, additional, Lang, J., additional, Lang, J.-N, additional, Lee, G., additional, Li, S. W., additional, Lim, M. A., additional, Lindert, J. M., additional, Lombardi, D., additional, Lönnblad, Leif, additional, Löschner, M., additional, Lurkin, N., additional, Ma, Y., additional, Machado, P., additional, Magerya, Vitaly, additional, Maier, A., additional, Majer, I., additional, Maltoni, Fabio, additional, Marcoli, M., additional, Marinelli, G., additional, Masouminia, M. R., additional, Mastrolia, Pierpaolo, additional, Mattelaer, Olivier, additional, Mazzitelli, J., additional, McFayden, Josh, additional, Medves, Rok, additional, Meinzinger, P., additional, Mo, J., additional, Monni, Pier Francesco, additional, Montagna, Guido, additional, Morgan, T., additional, Mosel, U., additional, Nachman, Benjamin, additional, Nadolsky, Pavel, additional, Nagar, R., additional, Nagy, Zoltan, additional, Napoletano, Davide, additional, Nason, Paolo, additional, Neumann, Tobias, additional, Nevay, L. J., additional, Nicrosini, Oreste, additional, Niehues, J., additional, Niewczas, K., additional, Ohl, Thorsten, additional, Ossola, Giovanni, additional, Pandey, V., additional, Papadopoulou, A., additional, Papaefstathiou, Andreas, additional, Paz, Gil, additional, Pellen, Mathieu, additional, Pelliccioli, Giovanni, additional, Peraro, T., additional, Piccinini, Fluvio, additional, Pickering, L., additional, Pires, J., additional, Placzek, Wieslaw, additional, Plätzer, Simon, additional, Plehn, Tilman, additional, Pozzorini, Stefano, additional, Prestel, Stefan, additional, Preuss, Christian Tobias, additional, Price, A. C., additional, Quackenbush, Seth, additional, Re, Emanuele, additional, Reichelt, Daniel, additional, Reina, Laura, additional, Reuschle, Christian, additional, Richardson, Peter, additional, Rocco, M., additional, Rocco, N., additional, Roda, M., additional, Rodriguez Garcia, A., additional, Roiser, Stefan, additional, Rojo, Juan, additional, Rottoli, Luca, additional, Salam, Gavin P., additional, Schönherr, Marek, additional, Schuchmann, S., additional, Schumann, Steffen, additional, Schürmann, Robin, additional, Scyboz, Ludovic, additional, Seymour, Michael H., additional, Siegert, Frank, additional, Signer, Adrian, additional, Chahal, Gurpreet Singh, additional, Siódmok, Andrzej, additional, Sjöstrand, Torbjörn, additional, Skands, Peter, additional, Smillie, Jennifer M., additional, Sobczyk, J. T., additional, Soldin, Dennis, additional, Soper, D. E., additional, Soto-Ontoso, Alba, additional, Soyez, Gregory, additional, Stagnitto, Giovanni, additional, Tena-Vidal, J., additional, Tomalak, O., additional, Tramontano, Francesco, additional, Trojanowski, Sebastian, additional, Tu, Z., additional, Uccirati, Sandro, additional, Ullrich, T., additional, Ulrich, Yannick, additional, Utheim, Marius, additional, Valassi, A., additional, Verbytskyi, Andrii, additional, Verheyen, Rob, additional, Wagman, M., additional, Walker, D., additional, Webber, B. R., additional, Weinstein, L., additional, White, O., additional, Whitehead, James, additional, Wiesemann, Marius, additional, Wilkinson, C., additional, Williams, C., additional, Winterhalder, Ramon, additional, Wret, C., additional, Xie, K., additional, Yang, T.-Z., additional, Yazgan, E., additional, Zanderighi, Giulia, additional, Zanoli, S., additional, and Zapp, Korinna, additional

Published
2024
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10. Anomalous coupling, top-mass and parton-shower effects in ${W^+W^-}$ production

Author

Bellm, Johannes, Gieseke, Stefan, Greiner, Nicolas, Heinrich, Gudrun, Platzer, Simon, Reuschle, Christian, and von Soden-Fraunhofen, Johann Felix

Subjects
High Energy Physics - Phenomenology
Abstract

We calculate the process $pp\to W^+W^-\to e^+ \nu_e \mu^-\bar{\nu}_\mu$ at NLO QCD, including also effective field theory (EFT) operators mediating the $ggW^+W^-$ interaction, which first occur at dimension eight. We further combine the NLO and EFT matrix elements produced by GoSam with the HERWIG7/MATCHBOX framework, which offers the possibility to study the impact of a parton shower. We assess the effects of the anomalous couplings by comparing them to top-mass effects as well as uncertainties related to variations of the renormalisation, factorisation and hard shower scales., Comment: 24 pages, 16 figures

Published
2016

12. 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

13. Matching Hadronization and Perturbative Evolution: The Cluster Model in Light of Infrared Shower Cutoff Dependence

Author

Hoang, André H., Jin, Oliver L., Plätzer, Simon, Samitz, Daniel, Hoang, André H., Jin, Oliver L., Plätzer, Simon, and Samitz, Daniel

Abstract

In the context of Monte Carlo (MC) generators with parton showers that have next-to-leading-logarithmic (NLL) precision, the cutoff $Q_0$ terminating the shower evolution should be viewed as an infrared factorization scale so that parameters or non-perturbative effects of the MC generator may have a field theoretic interpretation with a controllable scheme dependence. This implies that the generator's parton level should be carefully defined within QCD perturbation theory with subleading order precision. Furthermore, it entails that the shower cut $Q_0$ is not treated as one of the generator's tuning parameters, but that the tuning can be carried out reliably for a range of $Q_0$ values and that the hadron level description is $Q_0$-invariant. This in turn imposes non-trival constraints on the behavior of the generator's hadronization model, so that its parameters can adapt accordingly when the $Q_0$ value is changed. We investigate these features using the angular ordered parton shower and the cluster hadronization model implemented in the Herwig~7.2 MC generator focusing in particular on the $e^+e^-$ 2-jettiness distribution, where the shower is known to be NLL precise and where QCD factorization imposes stringent constraints on the hadronization corrections. We show that the Herwig default cluster hadronization model does not exhibit these features or consistency with QCD factorization with a satisfying precision. We design a modification of the cluster hadronization model, where some dynamical parton shower aspects are added that are missing in the default model. For this novel dynamical cluster hadronization model these features and consistency with QCD factorization are realized much more accurately., Comment: 54 pages, 17 figures

Published
2024

14. Challenges in Monte Carlo Event Generator Software for High-Luminosity LHC

Author

Valassi, Andrea, Yazgan, Efe, McFayden, Josh, Amoroso, Simone, Bendavid, Joshua, Buckley, Andy, Cacciari, Matteo, Childers, Taylor, Ciulli, Vitaliano, Frederix, Rikkert, Frixione, Stefano, Giuli, Francesco, Grohsjean, Alexander, Gütschow, Christian, Höche, Stefan, Hopkins, Walter, Ilten, Philip, Konstantinov, Dmitri, Krauss, Frank, Li, Qiang, Lönnblad, Leif, Maltoni, Fabio, Mangano, Michelangelo, Marshall, Zach, Mattelaer, Olivier, Fernandez Menendez, Javier, Mrenna, Stephen, Muralidharan, Servesh, Neumann, Tobias, Plätzer, Simon, Prestel, Stefan, Roiser, Stefan, Schönherr, Marek, Schulz, Holger, Schulz, Markus, Sexton-Kennedy, Elizabeth, Siegert, Frank, Siódmok, Andrzej, and Stewart, Graeme A.

Published
2021
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15. Controlling inclusive cross sections in parton shower + matrix element merging

Author

Platzer, Simon

Subjects
High Energy Physics - Phenomenology
Abstract

We propose an extension of matrix element plus parton shower merging at tree level to preserve inclusive cross sections obtained from the merged and showered sample. Implementing this constraint generates approximate next-to-leading order (NLO) contributions similar to the LoopSim approach. We then show how full NLO, or in principle even higher order, corrections can be added consistently, including constraints on inclusive cross sections to account for yet missing parton shower accuracy at higher logarithmic order. We also show how NLO accuracy below the merging scale can be obtained., Comment: 9 pages, 2 figures; references updated

Published
2012
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16. Subleading Nc improved Parton Showers

Author

Platzer, Simon and Sjodahl, Malin

Subjects
High Energy Physics - Phenomenology
Abstract

We describe an algorithm for improving subsequent parton shower emissions by full SU(3) color correlations in the framework of a dipole-type shower. As a proof of concept, we present results from the first implementation of such an algorithm for a final state shower. The corrections are found to be small for event shapes and jet rates but can be more significant for tailored observables., Comment: 18 pages, 9 figures

Published
2011
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17. Dipole Showers and Automated NLO Matching in Herwig++

Author

Platzer, Simon and Gieseke, Stefan

Subjects
High Energy Physics - Phenomenology
Abstract

We report on the implementation of a coherent dipole shower algorithm along with an automated implementation for dipole subtraction and for performing POWHEG- and MC@NLO-type matching to next-to-leading order (NLO) calculations. Both programs are implemented as add-on modules to the event generator Herwig++. A preliminary tune of parameters to data acquired at LEP, HERA and Drell-Yan pair production at the Tevatron has been performed, and we find an overall very good description which is slightly improved by the NLO matching., Comment: 14 pages, 14 figures

Published
2011
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18. ExSample -- A Library for Sampling Sudakov-Type Distributions

Author

Platzer, Simon

Subjects
High Energy Physics - Phenomenology, Physics - Data Analysis, Statistics and Probability
Abstract

Sudakov-type distributions are at the heart of generating radiation in parton showers as well as contemporary NLO matching algorithms along the lines of the POWHEG algorithm. In this paper, the C++ library ExSample is introduced, which implements adaptive sampling of Sudakov-type distributions for splitting kernels which are in general only known numerically. Besides the evolution variable, the splitting kernels can depend on an arbitrary number of other degrees of freedom to be sampled, and any number of further parameters which are fixed on an event-by-event basis., Comment: 6 pages, 6 figures, minor changes and figures added, corresponds to published version

Published
2011
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19. The Sudakov Veto Algorithm Reloaded

Author

Platzer, Simon and Sjodahl, Malin

Subjects
High Energy Physics - Phenomenology, Physics - Data Analysis, Statistics and Probability
Abstract

We perform a careful analysis of the main Monte Carlo algorithm used in parton shower simulations, the Sudakov veto algorithm. We prove a general version of the algorithm, directly including the dependence on the infrared cutoff. Taking this as a starting point, we then consider non-positive definite splitting kernels, as encountered when dealing with sub-leading colour correlations or splitting kernels beyond leading order. New algorithms suited for these situations are developed., Comment: 5 pages, minor changes, corresponds to published version

Published
2011

20. Coherent Parton Showers with Local Recoils

Author

Platzer, Simon and Gieseke, Stefan

Subjects
High Energy Physics - Phenomenology
Abstract

We outline a new formalism for dipole-type parton showers which maintain exact energy-momentum conservation at each step of the evolution. Particular emphasis is put on the coherence properties, the level at which recoil effects do enter and the role of transverse momentum generation from initial state radiation. The formulated algorithm is shown to correctly incorporate coherence for soft gluon radiation. Furthermore, it is well suited for easing matching to next-to-leading order calculations., Comment: 24 pages, 3 figures

Published
2009
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25. Herwig 7.2 release note

Author

Bellm, Johannes, Bewick, Gavin, Ferrario Ravasio, Silvia, Gieseke, Stefan, Grellscheid, David, Kirchgaeßer, Patrick, Loshaj, Frashër, Masouminia, Mohammad R., Nail, Graeme, Papaefstathiou, Andreas, Plätzer, Simon, Podskubka, Radek, Rauch, Michael, Reuschle, Christian, Richardson, Peter, Schichtel, Peter, Seymour, Michael H., Siódmok, Andrzej, and Webster, Stephen

Published
2020
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28. A standard convention for particle-level Monte Carlo event-variation weights

Author

Bothmann, Enrico, primary, Buckley, Andy, additional, Gütschow, Christian, additional, Prestel, Stefan, additional, Schönherr, Marek, additional, Skands, Peter, additional, Andersen, Jeppe R., additional, Bhattacharya, Saptaparna, additional, Butterworth, Jonathan, additional, Singh Chahal, Gurpreet, additional, Corpe, Louie, additional, Gellersen, Leif, additional, Gignac, Matthew, additional, Höche, Stefan, additional, Kar, Deepak, additional, Krauss, Frank, additional, Kretzschmar, Jan, additional, Lönnblad, Leif, additional, McFayden, Josh, additional, Papaefstathiou, Andreas, additional, Plätzer, Simon, additional, Schumann, Steffen, additional, Seymour, Michael H., additional, Siegert, Frank, additional, and Siódmok, Andrzej, additional

Published
2023
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30. One-loop calculations in the chirality-flow formalism

Author

Lifson, Andrew, Plätzer, Simon, Sjodahl, Malin, Lifson, Andrew, Plätzer, Simon, and Sjodahl, Malin

Abstract

In a few recent papers we introduced the chirality-flow formalism, which was shown to make calculations of tree-level Feynman diagrams simple and transparent. Chirality flow, which is based on the spinor-helicity formalism, allows to often immediately analytically write down a tree-level Feynman diagram in terms of spinor inner products. In this paper, we argue that there is also a significant simplification of the Lorentz structure at the one-loop level, at least when using the four-dimensional formulation of the four-dimensional helicity scheme. Additionally, we find that the possible terms in a tensor decomposition of loop integrals are highly constrained, and therefore the tensor reduction procedure is simplified., Comment: 28 pages, 1 figure

Published
2023

31. The Forward Physics Facility at the High-Luminosity LHC

Author

Feng, Jonathan L, Kling, Felix, Reno, Mary Hall, Rojo, Juan, Soldin, Dennis, Anchordoqui, Luis A, Boyd, Jamie, Ismail, Ahmed, Harland-Lang, Lucian, Kelly, Kevin J, Pandey, Vishvas, Trojanowski, Sebastian, Tsai, Yu-Dai, Alameddine, Jean-Marco, Araki, Takeshi, Ariga, Akitaka, Ariga, Tomoko, Asai, Kento, Bacchetta, Alessandro, Balazs, Kincso, Barr, Alan J, Battistin, Michele, Bian, Jianming, Bertone, Caterina, Bai, Weidong, Bakhti, Pouya, Balantekin, A Baha, Barman, Basabendu, Batell, Brian, Bauer, Martin, Bauer, Brian, Becker, Mathias, Berlin, Asher, Bertuzzo, Enrico, Bhattacharya, Atri, Bonvini, Marco, Boogert, Stewart T, Boyarsky, Alexey, Bramante, Joseph, Brdar, Vedran, Carmona, Adrian, Casper, David W, Celiberto, Francesco Giovanni, Cerutti, Francesco, Chachamis, Grigorios, Chauhan, Garv, Citron, Matthew, Copello, Emanuele, Corso, Jean-Pierre, Darmé, Luc, D’Agnolo, Raffaele Tito, Darvishi, Neda, Das, Arindam, De Lellis, Giovanni, De Roeck, Albert, de Vries, Jordy, Dembinski, Hans P., Demidov, Sergey, deNiverville, Patrick, Denton, Peter B., Deppisch, Frank F., Dev, P. S. Bhupal, Di Crescenzo, Antonia, Dienes, Keith R., Diwan, Milind V., Dreiner, Herbi K., Du, Yong, Dutta, Bhaskar, Duwentäster, Pit, Elie, Lucie, Ellis, Sebastian A. R., Enberg, Rikard, Farzan, Yasaman, Fieg, Max, Foguel, Ana Luisa, Foldenauer, Patrick, Foroughi-Abari, Saeid, Fortin, Jean-François, Friedland, Alexander, Fuchs, Elina, Fucilla, Michael, Gallmeister, Kai, Garcia, Alfonso, García Canal, Carlos A., Garzelli, Maria Vittoria, Gauld, Rhorry, Ghosh, Sumit, Ghoshal, Anish, Gibson, Stephen, Giuli, Francesco, Gonçalves, Victor P., Gorbunov, Dmitry, Goswami, Srubabati, Grau, Silvia, Günther, Julian Y., Guzzi, Marco, Haas, Andrew, Hakulinen, Timo, Harris, Steven P., Harz, Julia, Helo Herrera, Juan Carlos, Hill, Christopher S., Hirsch, Martin, Hobbs, Timothy J., Höche, Stefan, Hryczuk, Andrzej, Huang, Fei, Inada, Tomohiro, Infantino, Angelo, Ismail, Ameen, Jacobsson, Richard, Jana, Sudip, Jeong, Yu Seon, Ježo, Tomas, Jho, Yongsoo, Jodłowski, Krzysztof, Kalashnikov, Dmitry, Kärkkäinen, Timo J., Keppel, Cynthia, Kim, Jongkuk, Klasen, Michael, Klein, Spencer R., Ko, Pyungwon, Köhler, Dominik, Komatsu, Masahiro, Kovařík, Karol, Kulkarni, Suchita, Kumar, Jason, Kumar, Karan, Kuo, Jui-Lin, Krauss, Frank, Kusina, Aleksander, Laletin, Maxim, Le Roux, Chiara, Lee, Seung J., Lee, Hye-Sung, Lefebvre, Helena, Li, Jinmian, Li, Shuailong, Li, Yichen, Liu, Wei, Liu, Zhen, Lonjon, Mickael, Lyu, Kun-Feng, Maciula, Rafal, Abraham, Roshan Mammen, Masouminia, Mohammad R., McFayden, Josh, Mikulenko, Oleksii, Mohammed, Mohammed M. A., Mohan, Kirtimaan A., Morfín, Jorge G., Mosel, Ulrich, Mosny, Martin, Muzakka, Khoirul F., Nadolsky, Pavel, Nakano, Toshiyuki, Nangia, Saurabh, Cornago, Angel Navascues, Nevay, Laurence J., Ninin, Pierre, Nocera, Emanuele R., Nomura, Takaaki, Nunes, Rui, Okada, Nobuchika, Olness, Fred, Osborne, John, Otono, Hidetoshi, Ovchynnikov, Maksym, Papa, Alessandro, Pei, Junle, Peon, Guillermo, Perez, Gilad, Pickering, Luke, Plätzer, Simon, Plestid, Ryan, Poddar, Tanmay Kumar, Quílez, Pablo, Rai, Mudit, Rajaee, Meshkat, Raut, Digesh, Reimitz, Peter, Resnati, Filippo, Rhode, Wolfgang, Richardson, Peter, Ritz, Adam, Rokujo, Hiroki, Roszkowski, Leszek, Ruhe, Tim, Ruiz, Richard, Sabate-Gilarte, Marta, Sandrock, Alexander, Sarcevic, Ina, Sarkar, Subir, Sato, Osamu, Scherb, Christiane, Schienbein, Ingo, Schulz, Holger, Schwaller, Pedro, Sciutto, Sergio J, Sengupta, Dipan, Shchutska, Lesya, Shimomura, Takashi, Silvetti, Federico, Sinha, Kuver, Sjöstrand, Torbjörn, Sobczyk, Jan T., Song, Huayang, Soriano, Jorge F., Soreq, Yotam, Stasto, Anna, Stuart, David, Su, Shufang, Su, Wei, Szczurek, Antoni, Tabrizi, Zahra, Takubo, Yosuke, Taoso, Marco, Thomas, Brooks, Thonet, Pierre, Tuckler, Douglas, Sabio Vera, Agustin, Vincke, Heinz, Vishnudath, K.N., Wang, Zeren Simon, Winkler, Martin W, Wu, Wenjie, Xie, Keping, Xu, Xun-Jie, You, Tevong, Yu, Ji-Young, Yu, Jiang-Hao, Zapp, Korinna, Zhang, Yongchao, Zhang, Yue, Zhou, Guanghui, Funchal, Renata Zukanovich, Feng, Jonathan L, Kling, Felix, Reno, Mary Hall, Rojo, Juan, Soldin, Dennis, Anchordoqui, Luis A, Boyd, Jamie, Ismail, Ahmed, Harland-Lang, Lucian, Kelly, Kevin J, Pandey, Vishvas, Trojanowski, Sebastian, Tsai, Yu-Dai, Alameddine, Jean-Marco, Araki, Takeshi, Ariga, Akitaka, Ariga, Tomoko, Asai, Kento, Bacchetta, Alessandro, Balazs, Kincso, Barr, Alan J, Battistin, Michele, Bian, Jianming, Bertone, Caterina, Bai, Weidong, Bakhti, Pouya, Balantekin, A Baha, Barman, Basabendu, Batell, Brian, Bauer, Martin, Bauer, Brian, Becker, Mathias, Berlin, Asher, Bertuzzo, Enrico, Bhattacharya, Atri, Bonvini, Marco, Boogert, Stewart T, Boyarsky, Alexey, Bramante, Joseph, Brdar, Vedran, Carmona, Adrian, Casper, David W, Celiberto, Francesco Giovanni, Cerutti, Francesco, Chachamis, Grigorios, Chauhan, Garv, Citron, Matthew, Copello, Emanuele, Corso, Jean-Pierre, Darmé, Luc, D’Agnolo, Raffaele Tito, Darvishi, Neda, Das, Arindam, De Lellis, Giovanni, De Roeck, Albert, de Vries, Jordy, Dembinski, Hans P., Demidov, Sergey, deNiverville, Patrick, Denton, Peter B., Deppisch, Frank F., Dev, P. S. Bhupal, Di Crescenzo, Antonia, Dienes, Keith R., Diwan, Milind V., Dreiner, Herbi K., Du, Yong, Dutta, Bhaskar, Duwentäster, Pit, Elie, Lucie, Ellis, Sebastian A. R., Enberg, Rikard, Farzan, Yasaman, Fieg, Max, Foguel, Ana Luisa, Foldenauer, Patrick, Foroughi-Abari, Saeid, Fortin, Jean-François, Friedland, Alexander, Fuchs, Elina, Fucilla, Michael, Gallmeister, Kai, Garcia, Alfonso, García Canal, Carlos A., Garzelli, Maria Vittoria, Gauld, Rhorry, Ghosh, Sumit, Ghoshal, Anish, Gibson, Stephen, Giuli, Francesco, Gonçalves, Victor P., Gorbunov, Dmitry, Goswami, Srubabati, Grau, Silvia, Günther, Julian Y., Guzzi, Marco, Haas, Andrew, Hakulinen, Timo, Harris, Steven P., Harz, Julia, Helo Herrera, Juan Carlos, Hill, Christopher S., Hirsch, Martin, Hobbs, Timothy J., Höche, Stefan, Hryczuk, Andrzej, Huang, Fei, Inada, Tomohiro, Infantino, Angelo, Ismail, Ameen, Jacobsson, Richard, Jana, Sudip, Jeong, Yu Seon, Ježo, Tomas, Jho, Yongsoo, Jodłowski, Krzysztof, Kalashnikov, Dmitry, Kärkkäinen, Timo J., Keppel, Cynthia, Kim, Jongkuk, Klasen, Michael, Klein, Spencer R., Ko, Pyungwon, Köhler, Dominik, Komatsu, Masahiro, Kovařík, Karol, Kulkarni, Suchita, Kumar, Jason, Kumar, Karan, Kuo, Jui-Lin, Krauss, Frank, Kusina, Aleksander, Laletin, Maxim, Le Roux, Chiara, Lee, Seung J., Lee, Hye-Sung, Lefebvre, Helena, Li, Jinmian, Li, Shuailong, Li, Yichen, Liu, Wei, Liu, Zhen, Lonjon, Mickael, Lyu, Kun-Feng, Maciula, Rafal, Abraham, Roshan Mammen, Masouminia, Mohammad R., McFayden, Josh, Mikulenko, Oleksii, Mohammed, Mohammed M. A., Mohan, Kirtimaan A., Morfín, Jorge G., Mosel, Ulrich, Mosny, Martin, Muzakka, Khoirul F., Nadolsky, Pavel, Nakano, Toshiyuki, Nangia, Saurabh, Cornago, Angel Navascues, Nevay, Laurence J., Ninin, Pierre, Nocera, Emanuele R., Nomura, Takaaki, Nunes, Rui, Okada, Nobuchika, Olness, Fred, Osborne, John, Otono, Hidetoshi, Ovchynnikov, Maksym, Papa, Alessandro, Pei, Junle, Peon, Guillermo, Perez, Gilad, Pickering, Luke, Plätzer, Simon, Plestid, Ryan, Poddar, Tanmay Kumar, Quílez, Pablo, Rai, Mudit, Rajaee, Meshkat, Raut, Digesh, Reimitz, Peter, Resnati, Filippo, Rhode, Wolfgang, Richardson, Peter, Ritz, Adam, Rokujo, Hiroki, Roszkowski, Leszek, Ruhe, Tim, Ruiz, Richard, Sabate-Gilarte, Marta, Sandrock, Alexander, Sarcevic, Ina, Sarkar, Subir, Sato, Osamu, Scherb, Christiane, Schienbein, Ingo, Schulz, Holger, Schwaller, Pedro, Sciutto, Sergio J, Sengupta, Dipan, Shchutska, Lesya, Shimomura, Takashi, Silvetti, Federico, Sinha, Kuver, Sjöstrand, Torbjörn, Sobczyk, Jan T., Song, Huayang, Soriano, Jorge F., Soreq, Yotam, Stasto, Anna, Stuart, David, Su, Shufang, Su, Wei, Szczurek, Antoni, Tabrizi, Zahra, Takubo, Yosuke, Taoso, Marco, Thomas, Brooks, Thonet, Pierre, Tuckler, Douglas, Sabio Vera, Agustin, Vincke, Heinz, Vishnudath, K.N., Wang, Zeren Simon, Winkler, Martin W, Wu, Wenjie, Xie, Keping, Xu, Xun-Jie, You, Tevong, Yu, Ji-Young, Yu, Jiang-Hao, Zapp, Korinna, Zhang, Yongchao, Zhang, Yue, Zhou, Guanghui, and Funchal, Renata Zukanovich

Abstract

High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from the ATLAS interaction point and shielded by concrete and rock, will host a suite of experiments to probe standard model (SM) processes and search for physics beyond the standard model (BSM). In this report, we review the status of the civil engineering plans and the experiments to explore the diverse physics signals that can be uniquely probed in the forward region. FPF experiments will be sensitive to a broad range of BSM physics through searches for new particle scattering or decay signatures and deviations from SM expectations in high statistics analyses with TeV neutrinos in this low-background environment. High statistics neutrino detection will also provide valuable data for fundamental topics in perturbative and non-perturbative QCD and in weak interactions. Experiments at the FPF will enable synergies between forward particle production at the LHC and astroparticle physics to be exploited. We report here on these physics topics, on infrastructure, detector, and simulation studies, and on future directions to realize the FPF's physics potential.

Published
2023

33. The Forward Physics Facility at the High-Luminosity LHC

Author

Feng, Jonathan L, primary, Kling, Felix, additional, Reno, Mary Hall, additional, Rojo, Juan, additional, Soldin, Dennis, additional, Anchordoqui, Luis A, additional, Boyd, Jamie, additional, Ismail, Ahmed, additional, Harland-Lang, Lucian, additional, Kelly, Kevin J, additional, Pandey, Vishvas, additional, Trojanowski, Sebastian, additional, Tsai, Yu-Dai, additional, Alameddine, Jean-Marco, additional, Araki, Takeshi, additional, Ariga, Akitaka, additional, Ariga, Tomoko, additional, Asai, Kento, additional, Bacchetta, Alessandro, additional, Balazs, Kincso, additional, Barr, Alan J, additional, Battistin, Michele, additional, Bian, Jianming, additional, Bertone, Caterina, additional, Bai, Weidong, additional, Bakhti, Pouya, additional, Balantekin, A Baha, additional, Barman, Basabendu, additional, Batell, Brian, additional, Bauer, Martin, additional, Bauer, Brian, additional, Becker, Mathias, additional, Berlin, Asher, additional, Bertuzzo, Enrico, additional, Bhattacharya, Atri, additional, Bonvini, Marco, additional, Boogert, Stewart T, additional, Boyarsky, Alexey, additional, Bramante, Joseph, additional, Brdar, Vedran, additional, Carmona, Adrian, additional, Casper, David W, additional, Celiberto, Francesco Giovanni, additional, Cerutti, Francesco, additional, Chachamis, Grigorios, additional, Chauhan, Garv, additional, Citron, Matthew, additional, Copello, Emanuele, additional, Corso, Jean-Pierre, additional, Darmé, Luc, additional, D’Agnolo, Raffaele Tito, additional, Darvishi, Neda, additional, Das, Arindam, additional, De Lellis, Giovanni, additional, De Roeck, Albert, additional, de Vries, Jordy, additional, Dembinski, Hans P, additional, Demidov, Sergey, additional, deNiverville, Patrick, additional, Denton, Peter B, additional, Deppisch, Frank F, additional, Dev, P S Bhupal, additional, Di Crescenzo, Antonia, additional, Dienes, Keith R, additional, Diwan, Milind V, additional, Dreiner, Herbi K, additional, Du, Yong, additional, Dutta, Bhaskar, additional, Duwentäster, Pit, additional, Elie, Lucie, additional, Ellis, Sebastian A R, additional, Enberg, Rikard, additional, Farzan, Yasaman, additional, Fieg, Max, additional, Foguel, Ana Luisa, additional, Foldenauer, Patrick, additional, Foroughi-Abari, Saeid, additional, Fortin, Jean-François, additional, Friedland, Alexander, additional, Fuchs, Elina, additional, Fucilla, Michael, additional, Gallmeister, Kai, additional, Garcia, Alfonso, additional, García Canal, Carlos A, additional, Garzelli, Maria Vittoria, additional, Gauld, Rhorry, additional, Ghosh, Sumit, additional, Ghoshal, Anish, additional, Gibson, Stephen, additional, Giuli, Francesco, additional, Gonçalves, Victor P, additional, Gorbunov, Dmitry, additional, Goswami, Srubabati, additional, Grau, Silvia, additional, Günther, Julian Y, additional, Guzzi, Marco, additional, Haas, Andrew, additional, Hakulinen, Timo, additional, Harris, Steven P, additional, Harz, Julia, additional, Helo Herrera, Juan Carlos, additional, Hill, Christopher S, additional, Hirsch, Martin, additional, Hobbs, Timothy J, additional, Höche, Stefan, additional, Hryczuk, Andrzej, additional, Huang, Fei, additional, Inada, Tomohiro, additional, Infantino, Angelo, additional, Ismail, Ameen, additional, Jacobsson, Richard, additional, Jana, Sudip, additional, Jeong, Yu Seon, additional, Ježo, Tomas, additional, Jho, Yongsoo, additional, Jodłowski, Krzysztof, additional, Kalashnikov, Dmitry, additional, Kärkkäinen, Timo J, additional, Keppel, Cynthia, additional, Kim, Jongkuk, additional, Klasen, Michael, additional, Klein, Spencer R, additional, Ko, Pyungwon, additional, Köhler, Dominik, additional, Komatsu, Masahiro, additional, Kovařík, Karol, additional, Kulkarni, Suchita, additional, Kumar, Jason, additional, Kumar, Karan, additional, Kuo, Jui-Lin, additional, Krauss, Frank, additional, Kusina, Aleksander, additional, Laletin, Maxim, additional, Le Roux, Chiara, additional, Lee, Seung J, additional, Lee, Hye-Sung, additional, Lefebvre, Helena, additional, Li, Jinmian, additional, Li, Shuailong, additional, Li, Yichen, additional, Liu, Wei, additional, Liu, Zhen, additional, Lonjon, Mickael, additional, Lyu, Kun-Feng, additional, Maciula, Rafal, additional, Abraham, Roshan Mammen, additional, Masouminia, Mohammad R, additional, McFayden, Josh, additional, Mikulenko, Oleksii, additional, Mohammed, Mohammed M A, additional, Mohan, Kirtimaan A, additional, Morfín, Jorge G, additional, Mosel, Ulrich, additional, Mosny, Martin, additional, Muzakka, Khoirul F, additional, Nadolsky, Pavel, additional, Nakano, Toshiyuki, additional, Nangia, Saurabh, additional, Cornago, Angel Navascues, additional, Nevay, Laurence J, additional, Ninin, Pierre, additional, Nocera, Emanuele R, additional, Nomura, Takaaki, additional, Nunes, Rui, additional, Okada, Nobuchika, additional, Olness, Fred, additional, Osborne, John, additional, Otono, Hidetoshi, additional, Ovchynnikov, Maksym, additional, Papa, Alessandro, additional, Pei, Junle, additional, Peon, Guillermo, additional, Perez, Gilad, additional, Pickering, Luke, additional, Plätzer, Simon, additional, Plestid, Ryan, additional, Poddar, Tanmay Kumar, additional, Quílez, Pablo, additional, Rai, Mudit, additional, Rajaee, Meshkat, additional, Raut, Digesh, additional, Reimitz, Peter, additional, Resnati, Filippo, additional, Rhode, Wolfgang, additional, Richardson, Peter, additional, Ritz, Adam, additional, Rokujo, Hiroki, additional, Roszkowski, Leszek, additional, Ruhe, Tim, additional, Ruiz, Richard, additional, Sabate-Gilarte, Marta, additional, Sandrock, Alexander, additional, Sarcevic, Ina, additional, Sarkar, Subir, additional, Sato, Osamu, additional, Scherb, Christiane, additional, Schienbein, Ingo, additional, Schulz, Holger, additional, Schwaller, Pedro, additional, Sciutto, Sergio J, additional, Sengupta, Dipan, additional, Shchutska, Lesya, additional, Shimomura, Takashi, additional, Silvetti, Federico, additional, Sinha, Kuver, additional, Sjöstrand, Torbjörn, additional, Sobczyk, Jan T, additional, Song, Huayang, additional, Soriano, Jorge F, additional, Soreq, Yotam, additional, Stasto, Anna, additional, Stuart, David, additional, Su, Shufang, additional, Su, Wei, additional, Szczurek, Antoni, additional, Tabrizi, Zahra, additional, Takubo, Yosuke, additional, Taoso, Marco, additional, Thomas, Brooks, additional, Thonet, Pierre, additional, Tuckler, Douglas, additional, Sabio Vera, Agustin, additional, Vincke, Heinz, additional, Vishnudath, K N, additional, Wang, Zeren Simon, additional, Winkler, Martin W, additional, Wu, Wenjie, additional, Xie, Keping, additional, Xu, Xun-Jie, additional, You, Tevong, additional, Yu, Ji-Young, additional, Yu, Jiang-Hao, additional, Zapp, Korinna, additional, Zhang, Yongchao, additional, Zhang, Yue, additional, Zhou, Guanghui, additional, and Funchal, Renata Zukanovich, additional

Published
2023
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36. Systematics of quark/gluon tagging

Author

Gras, Philippe, Höche, Stefan, Kar, Deepak, Larkoski, Andrew, Lönnblad, Leif, Plätzer, Simon, Siódmok, Andrzej, Skands, Peter, Soyez, Gregory, and Thaler, Jesse

Published
2017
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39. Amplitude and colour evolution

Author

Plätzer, Simon

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences
Abstract

Colour evolution and parton branching at the amplitude level have become important theoretical frameworks to improve parton showers, and are algorithms in their own right: they complement shower development by resummation algorithms capable of including interference effects and subleading colour contributions at an unprecedented level. I summarize recent development in the field, focusing on soft gluon evolution, hadronization, and the CVolver framework., 7 pages, 1 figure, contribution to the proceedings of the 51st International Symposium on Multiparticle Dynamics (ISMD2022). arXiv admin note: text overlap with arXiv:2012.15215

Published
2022

41. Precise predictions for same-sign W-boson scattering at the LHC

Author

Ballestrero, Alessandro, Biedermann, Benedikt, Brass, Simon, Denner, Ansgar, Dittmaier, Stefan, Frederix, Rikkert, Govoni, Pietro, Grossi, Michele, Jäger, Barbara, Karlberg, Alexander, Maina, Ezio, Pellen, Mathieu, Pelliccioli, Giovanni, Plätzer, Simon, Rauch, Michael, Rebuzzi, Daniela, Reuter, Jürgen, Rothe, Vincent, Schwan, Christopher, Shao, Hua-Sheng, Stienemeier, Pascal, Zanderighi, Giulia, Zaro, Marco, and Zeppenfeld, Dieter

Published
2018
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45. Herwig 7.0/Herwig++ 3.0 release note

Author

Bellm, Johannes, Gieseke, Stefan, Grellscheid, David, Plätzer, Simon, Rauch, Michael, Reuschle, Christian, Richardson, Peter, Schichtel, Peter, Seymour, Michael H., Siódmok, Andrzej, Wilcock, Alexandra, Fischer, Nadine, Harrendorf, Marco A., Nail, Graeme, Papaefstathiou, Andreas, and Rauch, Daniel

Published
2016
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46. Colour Evolution and Infrared Physics

Author

Plätzer, Simon

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences
Abstract

We give a complete account of how soft gluon, massless quark, evolution equations in colour space originate, from a factorization into a hard cross section density operator and a soft function encoding measurements and the projection on definite colours. We detail this formalism up to the two loop level and we demonstrate how the evolution kernels relate to infrared subtractions, and how the resolution of infrared singular regions conspires with the structure of observables the algorithm should be able to predict. The latter allows us to address evolution in different kinematic variables, including energy ordering and angular cutoffs in non-global observables. The soft factor and its evolution resembles a hadronization model including effects such as colour reconnection, and could give insight into the structure of power corrections in observables which require soft gluon evolution., 31 pages, 2 figures, significantly extended with additional appendices and outlook, corresponds to version accepted by JHEP

Published
2022

47. Amplitude Factorization in the Electroweak Standard Model

Author

Plätzer, Simon and Sjodahl, Malin

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences
Abstract

We lay out the basis of factorization at the amplitude level for processes involving the entire Standard Model. The factorization appears in a generalized eikonal approximation in which we expand around a quasi-soft limit for massive gauge bosons, fermions, and scalars. We use the chirality-flow formalism together with a flow basis for isospin to express loop exchanges or emissions as operators in chirality and isospin flow. This forms the basis for amplitude evolution with parton exchange and branching in the full Standard Model, including the electroweak sector., 11 pages, 1 figure

Published
2022

48. The Forward Physics Facility at the High-Luminosity LHC

Author

Feng, Jonathan L., Kling, Felix, Reno, Mary Hall, Rojo, Juan, Soldin, Dennis, Anchordoqui, Luis A., Boyd, Jamie, Ismail, Ahmed, Harland-Lang, Lucian, Kelly, Kevin J., Pandey, Vishvas, Trojanowski, Sebastian, Tsai, Yu-Dai, Alameddine, Jean-Marco, Araki, Takeshi, Ariga, Akitaka, Ariga, Tomoko, Asai, Kento, Bacchetta, Alessandro, Balazs, Kincso, Barr, Alan J., Battistin, Michele, Bian, Jianming, Bertone, Caterina, Bai, Weidong, Bakhti, Pouya, Balantekin, A. Baha, Barman, Basabendu, Batell, Brian, Bauer, Martin, Bauer, Brian, Becker, Mathias, Berlin, Asher, Bertuzzo, Enrico, Bhattacharya, Atri, Bonvini, Marco, Boogert, Stewart T., Boyarsky, Alexey, Bramante, Joseph, Brdar, Vedran, Carmona, Adrian, Casper, David W., Celiberto, Francesco Giovanni, Cerutti, Francesco, Chachamis, Grigorios, Chauhan, Garv, Citron, Matthew, Copello, Emanuele, Corso, Jean-Pierre, Darmé, Luc, D'Agnolo, Raffaele Tito, Darvishi, Neda, Das, Arindam, De Lellis, Giovanni, De Roeck, Albert, de Vries, Jordy, Dembinski, Hans P., Demidov, Sergey, deNiverville, Patrick, Denton, Peter B., Deppisch, Frank F., Dev, P. S. Bhupal, Di Crescenzo, Antonia, Dienes, Keith R., Diwan, Milind V., Dreiner, Herbi K., Du, Yong, Dutta, Bhaskar, Duwentäster, Pit, Elie, Lucie, Ellis, Sebastian A. R., Enberg, Rikard, Farzan, Yasaman, Fieg, Max, Foguel, Ana Luisa, Foldenauer, Patrick, Foroughi-Abari, Saeid, Fortin, Jean-François, Friedland, Alexander, Fuchs, Elina, Fucilla, Michael, Gallmeister, Kai, Garcia, Alfonso, Canal, Carlos A. García, Garzelli, Maria Vittoria, Gauld, Rhorry, Ghosh, Sumit, Ghoshal, Anish, Gibson, Stephen, Giuli, Francesco, Gonçalves, Victor P., Gorbunov, Dmitry, Goswami, Srubabati, Grau, Silvia, Günther, Julian Y., Guzzi, Marco, Haas, Andrew, Hakulinen, Timo, Harris, Steven P., Harz, Julia, Herrera, Juan Carlos Helo, Hill, Christopher S., Hirsch, Martin, Hobbs, Timothy J., Höche, Stefan, Hryczuk, Andrzej, Huang, Fei, Inada, Tomohiro, Infantino, Angelo, Ismail, Ameen, Jacobsson, Richard, Jana, Sudip, Jeong, Yu Seon, Ježo, Tomas, Jho, Yongsoo, Jodłowski, Krzysztof, Kalashnikov, Dmitry, Kärkkäinen, Timo J., Keppel, Cynthia, Kim, Jongkuk, Klasen, Michael, Klein, Spencer R., Ko, Pyungwon, Köhler, Dominik, Komatsu, Masahiro, Kovařík, Karol, Kulkarni, Suchita, Kumar, Jason, Kumar, Karan, Kuo, Jui-Lin, Krauss, Frank, Kusina, Aleksander, Laletin, Maxim, Roux, Chiara Le, Lee, Seung J., Lee, Hye-Sung, Lefebvre, Helena, Li, Jinmian, Li, Shuailong, Li, Yichen, Liu, Wei, Liu, Zhen, Lonjon, Mickael, Lyu, Kun-Feng, Maciula, Rafal, Abraham, Roshan Mammen, Masouminia, Mohammad R., McFayden, Josh, Mikulenko, Oleksii, Mohammed, Mohammed M. A., Mohan, Kirtimaan A., Morfín, Jorge G., Mosel, Ulrich, Mosny, Martin, Muzakka, Khoirul F., Nadolsky, Pavel, Nakano, Toshiyuki, Nangia, Saurabh, Cornago, Angel Navascues, Nevay, Laurence J., Ninin, Pierre, Nocera, Emanuele R., Nomura, Takaaki, Nunes, Rui, Okada, Nobuchika, Olness, Fred, Osborne, John, Otono, Hidetoshi, Ovchynnikov, Maksym, Papa, Alessandro, Pei, Junle, Peon, Guillermo, Perez, Gilad, Pickering, Luke, Plätzer, Simon, Plestid, Ryan, Poddar, Tanmay Kumar, Rai, Mudit, Rajaee, Meshkat, Raut, Digesh, Reimitz, Peter, Resnati, Filippo, Rhode, Wolfgang, Richardson, Peter, Ritz, Adam, Rokujo, Hiroki, Roszkowski, Leszek, Ruhe, Tim, Ruiz, Richard, Sabate-Gilarte, Marta, Sandrock, Alexander, Sarcevic, Ina, Sarkar, Subir, Sato, Osamu, Scherb, Christiane, Schienbein, Ingo, Schulz, Holger, Schwaller, Pedro, Sciutto, Sergio J., Sengupta, Dipan, Shchutska, Lesya, Shimomura, Takashi, Silvetti, Federico, Sinha, Kuver, Sjöstrand, Torbjörn, Sobczyk, Jan T., Song, Huayang, Soriano, Jorge F., Soreq, Yotam, Stasto, Anna, Stuart, David, Su, Shufang, Su, Wei, Szczurek, Antoni, Tabrizi, Zahra, Takubo, Yosuke, Taoso, Marco, Thomas, Brooks, Thonet, Pierre, Tuckler, Douglas, Vera, Agustin Sabio, Vincke, Heinz, Vishnudath, K. N., Wang, Zeren Simon, Winkler, Martin W., Wu, Wenjie, Xie, Keping, Xu, Xun-Jie, You, Tevong, Yu, Ji-Young, Yu, Jiang-Hao, Zapp, Korinna, Zhang, Yongchao, Zhang, Yue, Zhou, Guanghui, Funchal, Renata Zukanovich, Feng, Jonathan L., Kling, Felix, Reno, Mary Hall, Rojo, Juan, Soldin, Dennis, Anchordoqui, Luis A., Boyd, Jamie, Ismail, Ahmed, Harland-Lang, Lucian, Kelly, Kevin J., Pandey, Vishvas, Trojanowski, Sebastian, Tsai, Yu-Dai, Alameddine, Jean-Marco, Araki, Takeshi, Ariga, Akitaka, Ariga, Tomoko, Asai, Kento, Bacchetta, Alessandro, Balazs, Kincso, Barr, Alan J., Battistin, Michele, Bian, Jianming, Bertone, Caterina, Bai, Weidong, Bakhti, Pouya, Balantekin, A. Baha, Barman, Basabendu, Batell, Brian, Bauer, Martin, Bauer, Brian, Becker, Mathias, Berlin, Asher, Bertuzzo, Enrico, Bhattacharya, Atri, Bonvini, Marco, Boogert, Stewart T., Boyarsky, Alexey, Bramante, Joseph, Brdar, Vedran, Carmona, Adrian, Casper, David W., Celiberto, Francesco Giovanni, Cerutti, Francesco, Chachamis, Grigorios, Chauhan, Garv, Citron, Matthew, Copello, Emanuele, Corso, Jean-Pierre, Darmé, Luc, D'Agnolo, Raffaele Tito, Darvishi, Neda, Das, Arindam, De Lellis, Giovanni, De Roeck, Albert, de Vries, Jordy, Dembinski, Hans P., Demidov, Sergey, deNiverville, Patrick, Denton, Peter B., Deppisch, Frank F., Dev, P. S. Bhupal, Di Crescenzo, Antonia, Dienes, Keith R., Diwan, Milind V., Dreiner, Herbi K., Du, Yong, Dutta, Bhaskar, Duwentäster, Pit, Elie, Lucie, Ellis, Sebastian A. R., Enberg, Rikard, Farzan, Yasaman, Fieg, Max, Foguel, Ana Luisa, Foldenauer, Patrick, Foroughi-Abari, Saeid, Fortin, Jean-François, Friedland, Alexander, Fuchs, Elina, Fucilla, Michael, Gallmeister, Kai, Garcia, Alfonso, Canal, Carlos A. García, Garzelli, Maria Vittoria, Gauld, Rhorry, Ghosh, Sumit, Ghoshal, Anish, Gibson, Stephen, Giuli, Francesco, Gonçalves, Victor P., Gorbunov, Dmitry, Goswami, Srubabati, Grau, Silvia, Günther, Julian Y., Guzzi, Marco, Haas, Andrew, Hakulinen, Timo, Harris, Steven P., Harz, Julia, Herrera, Juan Carlos Helo, Hill, Christopher S., Hirsch, Martin, Hobbs, Timothy J., Höche, Stefan, Hryczuk, Andrzej, Huang, Fei, Inada, Tomohiro, Infantino, Angelo, Ismail, Ameen, Jacobsson, Richard, Jana, Sudip, Jeong, Yu Seon, Ježo, Tomas, Jho, Yongsoo, Jodłowski, Krzysztof, Kalashnikov, Dmitry, Kärkkäinen, Timo J., Keppel, Cynthia, Kim, Jongkuk, Klasen, Michael, Klein, Spencer R., Ko, Pyungwon, Köhler, Dominik, Komatsu, Masahiro, Kovařík, Karol, Kulkarni, Suchita, Kumar, Jason, Kumar, Karan, Kuo, Jui-Lin, Krauss, Frank, Kusina, Aleksander, Laletin, Maxim, Roux, Chiara Le, Lee, Seung J., Lee, Hye-Sung, Lefebvre, Helena, Li, Jinmian, Li, Shuailong, Li, Yichen, Liu, Wei, Liu, Zhen, Lonjon, Mickael, Lyu, Kun-Feng, Maciula, Rafal, Abraham, Roshan Mammen, Masouminia, Mohammad R., McFayden, Josh, Mikulenko, Oleksii, Mohammed, Mohammed M. A., Mohan, Kirtimaan A., Morfín, Jorge G., Mosel, Ulrich, Mosny, Martin, Muzakka, Khoirul F., Nadolsky, Pavel, Nakano, Toshiyuki, Nangia, Saurabh, Cornago, Angel Navascues, Nevay, Laurence J., Ninin, Pierre, Nocera, Emanuele R., Nomura, Takaaki, Nunes, Rui, Okada, Nobuchika, Olness, Fred, Osborne, John, Otono, Hidetoshi, Ovchynnikov, Maksym, Papa, Alessandro, Pei, Junle, Peon, Guillermo, Perez, Gilad, Pickering, Luke, Plätzer, Simon, Plestid, Ryan, Poddar, Tanmay Kumar, Rai, Mudit, Rajaee, Meshkat, Raut, Digesh, Reimitz, Peter, Resnati, Filippo, Rhode, Wolfgang, Richardson, Peter, Ritz, Adam, Rokujo, Hiroki, Roszkowski, Leszek, Ruhe, Tim, Ruiz, Richard, Sabate-Gilarte, Marta, Sandrock, Alexander, Sarcevic, Ina, Sarkar, Subir, Sato, Osamu, Scherb, Christiane, Schienbein, Ingo, Schulz, Holger, Schwaller, Pedro, Sciutto, Sergio J., Sengupta, Dipan, Shchutska, Lesya, Shimomura, Takashi, Silvetti, Federico, Sinha, Kuver, Sjöstrand, Torbjörn, Sobczyk, Jan T., Song, Huayang, Soriano, Jorge F., Soreq, Yotam, Stasto, Anna, Stuart, David, Su, Shufang, Su, Wei, Szczurek, Antoni, Tabrizi, Zahra, Takubo, Yosuke, Taoso, Marco, Thomas, Brooks, Thonet, Pierre, Tuckler, Douglas, Vera, Agustin Sabio, Vincke, Heinz, Vishnudath, K. N., Wang, Zeren Simon, Winkler, Martin W., Wu, Wenjie, Xie, Keping, Xu, Xun-Jie, You, Tevong, Yu, Ji-Young, Yu, Jiang-Hao, Zapp, Korinna, Zhang, Yongchao, Zhang, Yue, Zhou, Guanghui, and Funchal, Renata Zukanovich

Abstract

High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from the ATLAS interaction point and shielded by concrete and rock, will host a suite of experiments to probe Standard Model (SM) processes and search for physics beyond the Standard Model (BSM). In this report, we review the status of the civil engineering plans and the experiments to explore the diverse physics signals that can be uniquely probed in the forward region. FPF experiments will be sensitive to a broad range of BSM physics through searches for new particle scattering or decay signatures and deviations from SM expectations in high statistics analyses with TeV neutrinos in this low-background environment. High statistics neutrino detection will also provide valuable data for fundamental topics in perturbative and non-perturbative QCD and in weak interactions. Experiments at the FPF will enable synergies between forward particle production at the LHC and astroparticle physics to be exploited. We report here on these physics topics, on infrastructure, detector, and simulation studies, and on future directions to realize the FPF's physics potential., Comment: 429 pages, contribution to Snowmass 2021

Published
2022

49. A standard convention for particle-level Monte Carlo event-variation weights

Author

Bothmann, Enrico, Buckley, Andy, Gütschow, Christian, Prestel, Stefan, Schönherr, Marek, Skands, Peter, Andersen, Jeppe, Bhattacharya, Saptaparna, Butterworth, Jonathan, Chahal, Gurpreet Singh, Corpe, Louie, Gellersen, Leif, Gignac, Matthew, Kar, Deepak, Krauss, Frank, Kretzschmar, Jan, Lönnblad, Leif, McFayden, Josh, Papaefstathiou, Andreas, Plätzer, Simon, Schumann, Steffen, Seymour, Michael, Siegert, Frank, Siódmok, Andrzej, Bothmann, Enrico, Buckley, Andy, Gütschow, Christian, Prestel, Stefan, Schönherr, Marek, Skands, Peter, Andersen, Jeppe, Bhattacharya, Saptaparna, Butterworth, Jonathan, Chahal, Gurpreet Singh, Corpe, Louie, Gellersen, Leif, Gignac, Matthew, Kar, Deepak, Krauss, Frank, Kretzschmar, Jan, Lönnblad, Leif, McFayden, Josh, Papaefstathiou, Andreas, Plätzer, Simon, Schumann, Steffen, Seymour, Michael, Siegert, Frank, and Siódmok, Andrzej

Abstract

Streams of event weights in particle-level Monte Carlo event generators are a convenient and immensely CPU-efficient approach to express systematic uncertainties in phenomenology calculations, providing systematic variations on the nominal prediction within a single event sample. But the lack of a common standard for labelling these variation streams across different tools has proven to be a major limitation for event-processing tools and analysers alike. Here we propose a well-defined, extensible community standard for the naming, ordering, and interpretation of weight streams that will serve as the basis for semantically correct parsing and combination of such variations in both theoretical and experimental studies., Comment: 11 pages

Published
2022

50. Wigner 6j symbols for SU(N): Symbols with at least two quark-lines

Author

Alcock-Zeilinger, Judith, Keppeler, Stefan, Plätzer, Simon, Sjodahl, Malin, Alcock-Zeilinger, Judith, Keppeler, Stefan, Plätzer, Simon, and Sjodahl, Malin

Abstract

We study a class of SU(N) Wigner 6j symbols involving two fundamental representations, and derive explicit formulae for all 6j symbols in this class. Our formulae express the 6j symbols in terms of the dimensions of the involved representations, and they are thereby functions of N. We view these explicit formulae as a first step towards efficiently decomposing SU(N) color structures in terms of group invariants., Comment: 39 pages, 1 figure

Published
2022

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