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36 results on '"Re, E."'

1. Event Generators for High-Energy Physics Experiments

Author

Campbell, J. M., Diefenthaler, M., Hobbs, T. J., Höche, S., Isaacson, J., Kling, F., Mrenna, S., Reuter, J., Alioli, S., Andersen, J. R., Andreopoulos, C., Ankowski, A. M., Aschenauer, E. C., Ashkenazi, A., Baker, M. D., Barrow, J. L., van Beekveld, M., Bewick, G., Bhattacharya, S., Bierlich, C., Bothmann, E., Bredt, P., Broggio, A., Buckley, A., Butter, A., Butterworth, J. M., Byrne, E. P., Calame, C. M. Carloni, Chakraborty, S., Chen, X., Chiesa, M., Childers, J. T., Cruz-Martinez, J., Currie, J., Darvishi, N., Dasgupta, M., Denner, A., Dreyer, F. A., Dytman, S., El-Menoufi, B. K., Engel, T., Ravasio, S. Ferrario, Figueroa, D., Flower, L., Forshaw, J. R., Frederix, R., Friedland, A., Frixione, S., Gallagher, H., Gallmeister, K., Gardiner, S., Gauld, R., Gaunt, J., Gavardi, A., Gehrmann, T., Ridder, A. Gehrmann-De, Gellersen, L., Giele, W., Gieseke, S., Giuli, F., Glover, E. W. N., Grazzini, M., Grohsjean, A., Gütschow, C., Hamilton, K., Han, T., Hatcher, R., Heinrich, G., Helenius, I., Hen, O., Hirschi, V., Höfer, M., Holguin, J., Huss, A., Ilten, P., Jadach, S., Jentsch, A., Jones, S. P., Ju, W., Kallweit, S., Karlberg, A., Katori, T., Kerner, M., Kilian, W., Kirchgaeßer, M. M., Klein, S., Knobbe, M., Krause, C., Krauss, F., Lang, J., Lang, J. -N., Lee, G., Li, S. W., Lim, M. A., Lindert, J. M., Lombardi, D., Lönnblad, L., Löschner, M., Lurkin, N., Ma, Y., Machado, P., Magerya, V., Maier, A., Majer, I., Maltoni, F., Marcoli, M., Marinelli, G., Masouminia, M. R., Mastrolia, P., Mattelaer, O., Mazzitelli, J., McFayden, J., Medves, R., Meinzinger, P., Mo, J., Monni, P. F., Montagna, G., Morgan, T., Mosel, U., Nachman, B., Nadolsky, P., Nagar, R., Nagy, Z., Napoletano, D., Nason, P., Neumann, T., Nevay, L. J., Nicrosini, O., Niehues, J., Niewczas, K., Ohl, T., Ossola, G., Pandey, V., Papadopoulou, A., Papaefstathiou, A., Paz, G., Pellen, M., Pelliccioli, G., Peraro, T., Piccinini, F., Pickering, L., Pires, J., Płaczek, W., Plätzer, S., Plehn, T., Pozzorini, S., Prestel, S., Preuss, C. T., Price, A. C., Quackenbush, S., Re, E., Reichelt, D., Reina, L., Reuschle, C., Richardson, P., Rocco, M., Rocco, N., Roda, M., Garcia, A. Rodriguez, Roiser, S., Rojo, J., Rottoli, L., Salam, G. P., Schönherr, M., Schuchmann, S., Schumann, S., Schürmann, R., Scyboz, L., Seymour, M. H., Siegert, F., Signer, A., Chahal, G. Singh, Siódmok, A., Sjöstrand, T., Skands, P., Smillie, J. M., Sobczyk, J. T., Soldin, D., Soper, D. E., Soto-Ontoso, A., Soyez, G., Stagnitto, G., Tena-Vidal, J., Tomalak, O., Tramontano, F., Trojanowski, S., Tu, Z., Uccirati, S., Ullrich, T., Ulrich, Y., Utheim, M., Valassi, A., Verbytskyi, A., Verheyen, R., Wagman, M., Walker, D., Webber, B. R., Weinstein, L., White, O., Whitehead, J., Wiesemann, M., Wilkinson, C., Williams, C., Winterhalder, R., Wret, C., Xie, K., Yang, T-Z., Yazgan, E., Zanderighi, G., Zanoli, S., and Zapp, K.

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

We provide an overview of the status of Monte-Carlo event generators for high-energy particle physics. Guided by the experimental needs and requirements, we highlight areas of active development, and opportunities for future improvements. Particular emphasis is given to physics models and algorithms that are employed across a variety of experiments. These common themes in event generator development lead to a more comprehensive understanding of physics at the highest energies and intensities, and allow models to be tested against a wealth of data that have been accumulated over the past decades. A cohesive approach to event generator development will allow these models to be further improved and systematic uncertainties to be reduced, directly contributing to future experimental success. Event generators are part of a much larger ecosystem of computational tools. They typically involve a number of unknown model parameters that must be tuned to experimental data, while maintaining the integrity of the underlying physics models. Making both these data, and the analyses with which they have been obtained accessible to future users is an essential aspect of open science and data preservation. It ensures the consistency of physics models across a variety of experiments., Comment: 164 pages, 10 figures, contribution to Snowmass 2021

Published
2022

2. Third order fiducial predictions for Drell-Yan at the LHC

Author

Chen, X., Gehrmann, T., Glover, E. W. N., Huss, A., Monni, P., Re, E., Rottoli, L., and Torrielli, P.

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

The Drell-Yan process at hadron colliders is a fundamental benchmark for the study of strong interactions and the extraction of electro-weak parameters. The outstanding precision of the LHC demands very accurate theoretical predictions with a full account of fiducial experimental cuts. In this letter we present a state-of-the-art calculation of the fiducial cross section and of differential distributions for this process at third order in the strict fixed-order expansion in the strong coupling, as well as including the all-order resummation of logarithmic corrections. Together with these results, we present a detailed study of the subtraction technique used to carry out the calculation for different sets of experimental cuts, as well as of the sensitivity of the fiducial cross section to infrared physics. We find that residual theory uncertainties are reduced to the percent level and that the robustness of the predictions can be improved by a suitable adjustment of fiducial cuts., Comment: 7 pages, 3 figures, 1 Table + suppl. material. Minor modifications and updated figures. Version published in PRL

Published
2022
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3. Precise predictions for boosted Higgs production

Author

Becker, K., Caola, F., Massironi, A., Mistlberger, B., Monni, P. F., Chen, X., Frixione, S., Gehrmann, T., Glover, N., Hamilton, K., Huss, A., Jones, S. P., Karlberg, A., Kerner, M., Kudashkin, K., Lindert, J. M., Luisoni, G., Mangano, M. L., Pozzorini, S., Re, E., Salam, G. P., Vryonidou, E., and Wever, C.

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

Inclusive Higgs boson production at large transverse momentum is induced by different production channels. We focus on the leading production through gluon fusion, and perform a consistent combination of the state of the art calculations obtained in the infinite-top-mass effective theory at next-to-next-to-leading order (NNLO) and in the full Standard Model (SM) at next-to-leading order (NLO). We thus present approximate QCD predictions for this process at NNLO, and a study of the corresponding perturbative uncertainties. This calculation is then compared with those obtained with commonly used event generators, and we observe that the description of the considered kinematic regime provided by these tools is in good agreement with state of the art calculations. Finally, we present accurate predictions for other production channels such as vector boson fusion, and associated production with a gauge boson, and with a $t\bar{t}$ pair. We find that, at large transverse momentum, the contribution of other production modes is substantial, and therefore must be included for a precise theory prediction of this observable., Comment: Journal version

Published
2020
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4. Les Houches 2019: Physics at TeV Colliders: Standard Model Working Group Report

Author

Amoroso, S., Azzurri, P., Bendavid, J., Bothmann, E., Britzger, D., Brooks, H., Buckley, A., Calvetti, M., Chen, X., Chiesa, M., Cieri, L., Ciulli, V., Cruz-Martinez, J., Cueto, A., Denner, A., Dittmaier, S., Donegà, M., Dührssen-Debling, M., Fabre, I., Ferrario-Ravasio, S., de Florian, D., Forte, S., Francavilla, P., Gehrmann, T., Ridder, A. Gehrmann-De, Gellersen, L., Glover, E. W. N., Gras, P., Gwenlan, C., Haddad, Y., Heinrich, G., Hessler, J., Hobbs, T. J., Höfer, M., Huss, A., Huston, J., Ježo, T., Jones, S. P., Kallweit, S., Klasen, M., Knippen, G., Larkoski, A., LeBlanc, M., Loch, P., Long, K., Maître, D., Marzani, S., Mazzitelli, J., Mcfayden, J. A., Metodiev, E., Michel, J. K. L., Llácer, M. Moreno, Nachman, B., Nadolsky, P., Napoletano, D., Nocera, E. R., Oleari, C., Pandini, C., Pellen, M., Pigazzini, S., Pires, J., Plätzer, S., Prestel, S., Rabbertz, K., Re, E., Richardson, P., Ringer, F., Rojo, J., Roloff, J., Röntsch, R., Schönherr, M., Schwan, C., Siegert, F., Soper, D., Soyez, G., Spira, M., Sutton, M. R., Tackmann, F. J., Theeuwes, V., Villani, S. L., Whitehead, J., Yang, H. T., and Zhou, J.

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

This Report summarizes the proceedings of the 2019 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt with (I) new developments for high precision Standard Model calculations, (II) the sensitivity of parton distribution functions to the experimental inputs, (III) new developments in jet substructure techniques and a detailed examination of gluon fragmentation at the LHC, (IV) issues in the theoretical description of the production of Standard Model Higgs bosons and how to relate experimental measurements, and (V) Monte Carlo event generator studies relating to PDF evolution and comparisons of important processes at the LHC., Comment: Proceedings of the Standard Model Working Group of the 2019 Les Houches Workshop, Physics at TeV Colliders, Les Houches 10-28 June 2019. 226 pages

Published
2020

5. Higgs Physics at the HL-LHC and HE-LHC

Author

Cepeda, M., Gori, S., Ilten, P., Kado, M., Riva, F., Khalek, R. Abdul, Aboubrahim, A., Alimena, J., Alioli, S., Alves, A., Asawatangtrakuldee, C., Azatov, A., Azzi, P., Bailey, S., Banerjee, S., Barberio, E. L., Barducci, D., Barone, G., Bauer, M., Bautista, C., Bechtle, P., Becker, K., Benaglia, A., Bengala, M., Berger, N., Bertella, C., Bethani, A., Betti, A., Biekotter, A., Bishara, F., Bloch, D., Bokan, P., Bondu, O., Bonvini, M., Borgonovi, L., Borsato, M., Boselli, S., Braibant-Giacomelli, S., Buchalla, G., Cadamuro, L., Caillol, C., Calandri, A., Tazon, A. Calderon, Campbell, J. M., Caola, F., Capozi, M., Carena, M., Calame, C. M. Carloni, Carmona, A., Carquin, E., De Oliveira, A. Carvalho Antunes, Hernandez, A. Castaneda, Cata, O., Celis, A., Cerri, A., Cerutti, F., Chahal, G. S., Chakraborty, A., Chaudhary, G., Chen, X., Chisholm, A. S., Contino, R., Costa, A. J., Covarelli, R., Craig, N., Curtin, D., D'Eramo, L., Dang, N. P., Das, P., Dawson, S., Francisco, O. A. De Aguiar, de Blas, J., De Curtis, S., De Filippis, N., De la Torre, H., de Lima, L., De Wit, A., Delaere, C., Delcourt, M., Delmastro, M., Demers, S., Dev, N., Di Nardo, R., Di Vita, S., Dildick, S., Prado, L. A. F. do, Donadelli, M., Du, D., Durieux, G., Dührssen, M., Eberhardt, O., Morabit, K. El, Elias-Miro, J., Ellis, J., Englert, C., Essig, R., Falke, S., Farina, M., Ferrari, A., Ferroglia, A., Fiolhais, M. C. N., Flechl, M., Folgueras, S., Fontanesi, E., Francavilla, P., Franceschini, R., Frederix, R., Frixione, S., Gómez-Ceballos, G., Gabrielli, A., Gadatsch, S., Gallinaro, M., Gandrakota, A., Gao, J., Walls, F. M. Garay, Gehrmann, T., Gershtein, Y., Ghosh, T., Gilbert, A., Glein, R., Glover, E. W. N., Gomez-Ambrosio, R., Gonçalo, R., Gonçalves, D., Gorbahn, M., Gouveia, E., Gouzevitch, M., Govoni, P., Grazzini, M., Greenberg, B., Grimm, K., Gritsan, A. V., Grohsjean, A., Grojean, C., Gu, J., Gugel, R., Gupta, R. S., Gwilliam, C. B., Höche, S., Haacke, M., Haddad, Y., Haisch, U., Hamity, G. N., Han, T., Harland-Lang, L. A., Harnik, R., Heinemeyer, S., Heinrich, G., Henning, B., Hirschi, V., Hoepfner, K., Hogan, J. M., Homiller, S., Huang, Y., Huss, A., Jézéquel, S., Jain, Sa., Jones, S. P., Köneke, K., Kalinowski, J., Kamenik, J. F., Kaplan, M., Karlberg, A., Kaur, M., Keicher, P., Kerner, M., Khanov, A., Kieseler, J., Kim, J. H., Kim, M., Klijnsma, T., Kling, F., Klute, M., Komaragiri, J. R., Kong, K., Kozaczuk, J., Kozow, P, Krause, C., Lai, S., Langford, J., Le, B., Lechner, L., Leight, W. A., Leney, K. J. C., Lenz, T., Li, C-Q., Li, H., Li, Q., Liebler, S., Lindert, J., Liu, D., Liu, J., Liu, Y., Liu, Z., Lombardo, D., Long, A., Long, K., Low, I., Luisoni, G., Ma, L. L., Magnan, A. -M., Majumder, D., Malinauskas, A., Maltoni, F., Mangano, M. L., Marchiori, G., Marini, A. C., Martin, A., Marzani, S., Massironi, A., Matchev, K. T., Matheus, R. D., Mazumdar, K., Mazzitelli, J., Mcdougall, A. E., Meade, P., Meridiani, P., Meyer, A. B., Michielin, E., Milenovic, P., Milosevic, V., Mimasu, K., Mistlberger, B., Mlynarikova, M., Mondragon, M., Monni, P. F., Montagna, G., Monti, F., Llacer, M. Moreno, Mueck, A., Muiño, P. C., Murphy, C., Murray, W. J., Musella, P., Narain, M., Garcia, R. F. Naranjo, Nath, P., Neubert, M., Nicrosini, O., Nikolopoulos, K., Nisati, A., No, J. M., Ojeda, M. L., Pino, S. A. Olivares, Onofre, A., Ortona, G., Griso, S. Pagan, Pagani, D., Cortezon, E. Palencia, Palmer, C., Pandini, C., Panico, G., Panwar, L., Pappadopulo, D., Park, M., Patel, R., Paucar-Velasquez, F., Pedro, K., Pernie, L., Perrozzi, L., Petersen, B. A., Petit, E., Petrucciani, G., Piacquadio, G., Piccinini, F., Pieri, M., Plehn, T., Pokorski, S., Pomarol, A., Ponton, E., Pozzorini, S., Prestel, S., Prokofiev, K., Ramsey-Musolf, M., Re, E., Readioff, N. P., Redigolo, D., Reina, L., Reynolds, E., Riembau, M., Rikkert, F., Robens, T., Roentsch, R., Rojo, J., Rompotis, N., Rorie, J., Rosiek, J., Roskes, J., Ruderman, J. T., Sahoo, N., Saito, S., Salerno, R., De Bruin, P. H. Sales, Salvucci, A., Sandeep, K., Santiago, J., Santo, R., Sanz, V., Sarica, U., Savin, A., Savoy-Navarro, A., Sawant, S., Schaffer, A. C., Schlaffer, M., Schmidt, A., Schneider, B., Schoefbeck, R., Schröder, M., Scodeggio, M., Scott, E., Scyboz, L., Selvaggi, M., Sestini, L., Shao, H. -S., Shivaji, A., Silvestrini, L., Simon, L., Sinha, K., Soreq, Y., Spannowsky, M., Spira, M., Spitzbart, D., Stamou, E., Stark, J., Stefaniak, T., Stieger, B., Strong, G., Szleper, M., Tackmann, K., Takeuchi, M., Taroni, S., Testa, M., Thamm, A., Theeuwes, V., Thomsen, L. A., Tkaczyk, S., Torre, R., Tramontano, F., Ulmer, K. A., Vantalon, T., Vecchi, L., Vega-Morales, R., Venturini, E., Verducci, M., Vernieri, C., Vickey, T., Marono, M. Vidal, Vischia, P., Vryonidou, E., Wagner, P., Walbrecht, V. M., Wang, L. -T., Wardle, N., Wardrope, D. R., Weiglein, G., Wertz, S., Wielers, M., Williams, J. M., Wolf, R., Wulzer, A., Xiao, M., Yang, H. T., Yazgan, E., Yin, Z., You, T., Yu, F., Zanderighi, G., Zanzi, D., Zaro, M., Zenz, S. C., Zerwas, D., Zgubič, M., Zhang, J., Zhang, L., Zhang, W., Zhao, X., and Zhong, Y. -M.

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

The discovery of the Higgs boson in 2012, by the ATLAS and CMS experiments, was a success achieved with only a percent of the entire dataset foreseen for the LHC. It opened a landscape of possibilities in the study of Higgs boson properties, Electroweak Symmetry breaking and the Standard Model in general, as well as new avenues in probing new physics beyond the Standard Model. Six years after the discovery, with a conspicuously larger dataset collected during LHC Run 2 at a 13 TeV centre-of-mass energy, the theory and experimental particle physics communities have started a meticulous exploration of the potential for precision measurements of its properties. This includes studies of Higgs boson production and decays processes, the search for rare decays and production modes, high energy observables, and searches for an extended electroweak symmetry breaking sector. This report summarises the potential reach and opportunities in Higgs physics during the High Luminosity phase of the LHC, with an expected dataset of pp collisions at 14 TeV, corresponding to an integrated luminosity of 3 ab$^{-1}$. These studies are performed in light of the most recent analyses from LHC collaborations and the latest theoretical developments. The potential of an LHC upgrade, colliding protons at a centre-of-mass energy of 27 TeV and producing a dataset corresponding to an integrated luminosity of 15 ab$^{-1}$, is also discussed., Comment: Report from Working Group 2 on the Physics of the HL-LHC, and Perspectives at the HE-LHC, 364 pages

Published
2019

6. Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector

Author

de Florian, D., Grojean, C., Maltoni, F., Mariotti, C., Nikitenko, A., Pieri, M., Savard, P., Schumacher, M., Tanaka, R., Aggleton, R., Ahmad, M., Allanach, B., Anastasiou, C., Astill, W., Badger, S., Badziak, M., Baglio, J., Bagnaschi, E., Ballestrero, A., Banfi, A., Barducci, D., Beckingham, M., Becot, C., Bélanger, G., Bellm, J., Belyaev, N., Bernlochner, F. U., Beskidt, C., Biekötter, A., Bishara, F., Bizon, W., Bomark, N. E., Bonvini, M., Borowka, S., Bortolotto, V., Boselli, S., Botella, F. J., Boughezal, R., Branco, G. C., Brehmer, J., Brenner, L., Bressler, S., Brivio, I., Broggio, A., Brun, H., Buchalla, G., Burgard, C. D., Calandri, A., Caminada, L., Armadans, R. Caminal, Campanario, F., Campbell, J., Caola, F., Calame, C. M. Carloni, Carrazza, S., Carvalho, A., Casolino, M., Cata, O., Celis, A., Cerutti, F., Chanon, N., Chen, M., Chen, X., Nejad, B. Chokoufé, Christensen, N., Ciuchini, M., Contino, R., Corbett, T., Costa, R., Curtin, D., Dall'Osso, M., David, A., Dawson, S., de Blas, J., de Boer, W., Manzano, P. de Castro, Degrande, C., Delgado, R. L., Demartin, F., Denner, A., Di Micco, B., Di Nardo, R., Dittmaier, S., Dobado, A., Dorigo, T., Dreyer, F. A., Dührssen, M., Duhr, C., Dulat, F., Ecker, K., Ellis, K., Ellwanger, U., Englert, C., Espriu, D., Falkowski, A., Fayard, L., Feger, R., Ferrera, G., Ferroglia, A., Fidanza, N., Figy, T., Flechl, M., Fontes, D., Forte, S., Francavilla, P., Franco, E., Frederix, R., Freitas, A., Freitas, F. F., Frensch, F., Frixione, S., Fuks, B., Furlan, E., Gadatsch, S., Gao, J., Gao, Y., Garzelli, M. V., Gehrmann, T., Gerosa, R., Ghezzi, M., Ghosh, D., Gieseke, S., Gillberg, D., Giudice, G. F., Glover, E. W. N., Goertz, F., Gonçalves, D., Gonzalez-Fraile, J., Gorbahn, M., Gori, S., Gottardo, C. A., Gouzevitch, M., Govoni, P., Gray, D., Grazzini, M., Greiner, N., Greljo, A., Grigo, J., Gritsan, A. V., Gröber, R., Guindon, S., Haber, H. E., Han, C., Han, T., Harlander, R., Harrendorf, M. A., Hartanto, H. B., Hays, C., Heinemeyer, S., Heinrich, G., Herrero, M., Herzog, F., Hespel, B., Hirschi, V., Hoeche, S., Honeywell, S., Huber, S. J., Hugonie, C., Huston, J., Ilnicka, A., Isidori, G., Jäger, B., Jaquier, M., Jones, S. P., Juste, A., Kallweit, S., Kaluza, A., Kardos, A., Karlberg, A., Kassabov, Z., Kauer, N., Kazakov, D. I., Kerner, M., Kilian, W., Kling, F., Köneke, K., Kogler, R., Konoplich, R., Kortner, S., Kraml, S., Krause, C., Krauss, F., Krawczyk, M., Kulesza, A., Kuttimalai, S., Lane, R., Lazopoulos, A., Lee, G., Lenzi, P., Lewis, I. M., Li, Y., Liebler, S., Lindert, J., Liu, X., Liu, Z., Llanes-Estrada, F. J., Logan, H. E., Lopez-Val, D., Low, I., Luisoni, G., Maierhöfer, P., Maina, E., Mansoulié, B., Mantler, H., Mantoani, M., Marini, A. C., Outschoorn, V. I. Martinez, Marzani, S., Marzocca, D., Massironi, A., Mawatari, K., Mazzitelli, J., McCarn, A., Mellado, B., Melnikov, K., Menari, S. B., Merlo, L., Meyer, C., Milenovic, P., Mimasu, K., Mishima, S., Mistlberger, B., Moch, S. -O., Mohammadi, A., Monni, P. F., Montagna, G., Llácer, M. Moreno, Moretti, N., Moretti, S., Motyka, L., Mück, A., Mühlleitner, M., Munir, S., Musella, P., Nadolsky, P., Napoletano, D., Nebot, M., Neu, C., Neubert, M., Nevzorov, R., Nicrosini, O., Nielsen, J., Nikolopoulos, K., No, J. M., O'Brien, C., Ohl, T., Oleari, C., Orimoto, T., Pagani, D., Pandini, C. E., Papaefstathiou, A., Papanastasiou, A. S., Passarino, G., Pecjak, B. D., Pelliccioni, M., Perez, G., Perrozzi, L., Petriello, F., Petrucciani, G., Pianori, E., Piccinini, F., Pierini, M., Pilkington, A., Plätzer, S., Plehn, T., Podskubka, R., Potter, C. T., Pozzorini, S., Prokofiev, K., Pukhov, A., Puljak, I., Queitsch-Maitland, M., Quevillon, J., Rathlev, D., Rauch, M., Re, E., Rebelo, M. N., Rebuzzi, D., Reina, L., Reuschle, C., Reuter, J., Riembau, M., Riva, F., Rizzi, A., Robens, T., Röntsch, R., Rojo, J., Romão, J. C., Rompotis, N., Roskes, J., Roth, R., Salam, G. P., Salerno, R., Sampaio, M. O. P., Santos, R., Sanz, V., Sanz-Cillero, J. J., Sargsyan, H., Sarica, U., Schichtel, P., Schlenk, J., Schmidt, T., Schmitt, C., Schönherr, M., Schubert, U., Schulze, M., Sekula, S., Sekulla, M., Shabalina, E., Shao, H. S., Shelton, J., Shepherd-Themistocleous, C. H., Shim, S. Y., Siegert, F., Signer, A., Silva, J. P., Silvestrini, L., Sjodahl, M., Slavich, P., Slawinska, M., Soffi, L., Spannowsky, M., Speckner, C., Sperka, D. M., Spira, M., Stål, O., Staub, F., Stebel, T., Stefaniak, T., Steinhauser, M., Stewart, I. W., Strassler, M. J., Streicher, J., Strom, D. M., Su, S., Sun, X., Tackmann, F. J., Tackmann, K., Teixeira, A. M., de Lima, R. Teixeira, Theeuwes, V., Thorne, R., Tommasini, D., Torrielli, P., Tosi, M., Tramontano, F., Trócsányi, Z., Trott, M., Tsinikos, I., Ubiali, M., Vanlaer, P., Verkerke, W., Vicini, A., Viliani, L., Vryonidou, E., Wackeroth, D., Wagner, C. E. M., Wang, J., Wayand, S., Weiglein, G., Weiss, C., Wiesemann, M., Williams, C., Winter, J., Winterbottom, D., Wolf, R., Xiao, M., Yang, L. L., Yohay, R., Yuen, S. P. Y., Zanderighi, G., Zaro, M., Zeppenfeld, D., Ziegler, R., Zirke, T., and Zupan, J.

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

This Report summarizes the results of the activities of the LHC Higgs Cross Section Working Group in the period 2014-2016. The main goal of the working group was to present the state-of-the-art of Higgs physics at the LHC, integrating all new results that have appeared in the last few years. The first part compiles the most up-to-date predictions of Higgs boson production cross sections and decay branching ratios, parton distribution functions, and off-shell Higgs boson production and interference effects. The second part discusses the recent progress in Higgs effective field theory predictions, followed by the third part on pseudo-observables, simplified template cross section and fiducial cross section measurements, which give the baseline framework for Higgs boson property measurements. The fourth part deals with the beyond the Standard Model predictions of various benchmark scenarios of Minimal Supersymmetric Standard Model, extended scalar sector, Next-to-Minimal Supersymmetric Standard Model and exotic Higgs boson decays. This report follows three previous working-group reports: Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables (CERN-2011-002), Handbook of LHC Higgs Cross Sections: 2. Differential Distributions (CERN-2012-002), and Handbook of LHC Higgs Cross Sections: 3. Higgs properties (CERN-2013-004). The current report serves as the baseline reference for Higgs physics in LHC Run 2 and beyond., Comment: 869 pages, 295 figures, 248 tables and 1645 citations. Working Group web page: https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHXSWG

Published
2016
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7. Physics at a 100 TeV pp collider: Standard Model processes

Author

Mangano, M. L., Zanderighi, G., Saavedra, J. A. Aguilar, Alekhin, S., Badger, S., Bauer, C. W., Becher, T., Bertone, V., Bonvini, M., Boselli, S., Bothmann, E., Boughezal, R., Cacciari, M., Calame, C. M. Carloni, Caola, F., Campbell, J. M., Carrazza, S., Chiesa, M., Cieri, L., Cimaglia, F., Cordero, F. Febres, Ferrarese, P., D'Enterria, D., Ferrera, G., Tormo, X. Garcia i, Garzelli, M. V., Germann, E., Hirschi, V., Han, T., Ita, H., Jäger, B., Kallweit, S., Karlberg, A., Kuttimalai, S., Krauss, F., Larkoski, A. J., Lindert, J., Luisoni, G., Maierhöfer, P., Mattelaer, O., Martinez, H., Moch, S., Montagna, G., Moretti, M., Nason, P., Nicrosini, O., Oleari, C., Pagani, D., Papaefstathiou, A., Petriello, F., Piccinini, F., Pierini, M., Pierog, T., Pozzorini, S., Re, E., Robens, T., Rojo, J., Ruiz, R., Sakurai, K., Salam, G. P., Salfelder, L., Schönherr, M., Schulze, M., Schumann, S., Selvaggi, M., Shivaji, A., Siodmok, A., Skands, P., Torrielli, P., Tramontano, F., Tsinikos, I., Tweedie, B., Vicini, A., Westhoff, S., Zaro, M., and Zeppenfeld, D.

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

This report summarises the properties of Standard Model processes at the 100 TeV pp collider. We document the production rates and typical distributions for a number of benchmark Standard Model processes, and discuss new dynamical phenomena arising at the highest energies available at this collider. We discuss the intrinsic physics interest in the measurement of these Standard Model processes, as well as their role as backgrounds for New Physics searches., Comment: 253 pages, 198 figures. Chapter 1 of the "Physics at the FCC-hh" Report

Published
2016

8. Precision Studies of Observables in pp->W->l nu and pp->gamma,Z->l+l- processes at the LHC

Author

Alioli, S., Arbuzov, A. B., Bardin, D. Yu., Barze, L., Bernaciak, C., Bondarenko, S. G., Calame, C. Carloni, Chiesa, M., Dittmaier, S., Ferrera, G., de Florian, D., Grazzini, M., Hoeche, S., Huss, A., Jadach, S., Kalinovskaya, L. V., Karlberg, A., Krauss, F., Li, Y., Martinez, H., Montagna, G., Mueck, A., Nason, P., Nicrosini, O., Petriello, F., Piccinini, F., Placzek, W., Prestel, S., Re, E., Sapronov, A. A., Schoenherr, M., Schwinn, C., Vicini, A., Wackeroth, D., Was, Z., and Zanderighi, G.

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

This report was prepared in the context of the LPCC "Electroweak Precision Measurements at the LHC WG" and summarizes the activity of a subgroup dedicated to the systematic comparison of public Monte Carlo codes, which describe the Drell-Yan processes at hadron colliders, in particular at the CERN Large Hadron Collider (LHC). This work represents an important step towards the definition of an accurate simulation framework necessary for very high-precision measurements of electroweak (EW) observables such as the $W$ boson mass and the weak mixing angle. All the codes considered in this report share at least next-to-leading-order (NLO) accuracy in the prediction of the total cross sections in an expansion either in the strong or in the EW coupling constant. The NLO fixed-order predictions have been scrutinized at the technical level, using exactly the same inputs, setup and perturbative accuracy, in order to quantify the level of agreement of different implementations of the same calculation. A dedicated comparison, again at the technical level, of three codes that reach next-to-next-to-leading-order (NNLO) accuracy in quantum chromodynamics (QCD) for the total cross section has also been performed. These fixed-order results are a well-defined reference that allows a classification of the impact of higher-order sets of radiative corrections. Several examples of higher-order effects due to the strong or the EW interaction are discussed in this common framework. Also the combination of QCD and EW corrections is discussed, together with the ambiguities that affect the final result, due to the choice of a specific combination recipe., Comment: 92 pages, report of the working group on precision calculations for Drell-Yan processes

Published
2016
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9. The SM and NLO Multileg and SM MC Working Groups: Summary Report

Author

Maestre, J. Alcaraz, Alioli, S., Andersen, J. R., Ball, R. D., Buckley, A., Cacciari, M., Campanario, F., Chanon, N., Chachamis, G., Ciulli, V., Cossutti, F., Cullen, G., Denner, A., Dittmaier, S., Fleischer, J., Frederix, R., Frixione, S., Gao, J., Garren, L., Gascon-Shotkin, S., Greiner, N., Guillet, J. P., Hapola, T., Hartland, N. P., Heinrich, G., Hesketh, G., Hirschi, V., Hoeth, H., Huston, J., Ježo, T., Kallweit, S., Kovařík, K., Krauss, F., Kusina, A., Liang, Z., Lenzi, P., Lönnblad, L., Lopez-Villarejo, J. J., Luisoni, G., Maître, D., Maltoni, F., Mastrolia, P., Nadolsky, P. M., Nurse, E., Oleari, C., Olness, F. I., Ossola, G., Pilon, E., Pittau, R., Plätzer, S., Pozzorini, S., Prestel, S., Re, E., Reiter, T., Riemann, T., Rojo, J., Salam, G. P., Sapeta, S., Schienbein, I., Schönherr, M., Schulz, H., Schulze, M., Schwoerer, M., Skands, P., Smillie, J. M., Somogyi, G., Soyez, G., Stavreva, T., Stewart, I. W., Stockton, M., Szor, Z., Tackmann, F. J., Torrielli, P., Tramontano, F., Tripiana, M., Trócsányi, Z., Ubiali, M., Yundin, V., Weinzierl, S., Winter, J., Yu, J. Y., and Zapp, K.

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

The 2011 Les Houches workshop was the first to confront LHC data. In the two years since the previous workshop there have been significant advances in both soft and hard QCD, particularly in the areas of multi-leg NLO calculations, the inclusion of those NLO calculations into parton shower Monte Carlos, and the tuning of the non-perturbative parameters of those Monte Carlos. These proceedings describe the theoretical advances that have taken place, the impact of the early LHC data, and the areas for future development., Comment: 220 pages

Published
2012

10. Reaching NNLOPS accuracy with POWHEG and MiNLO

Author

Re, E and Re, E

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

We describe how a simulation of Higgs boson production accurate at next-to-next-to-leading order and matched to a parton shower can be built by combining the POWHEG and MiNLO methods and using HNNLO results as input., Comment: 6 pages, 2 figures. Submitted to the proceedings of the LC13 Workshop, September 16-20, 2013, ECT*, Trento, Italy

Published
2014
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11. A new approach to the Higgs transverse-momentum resummation at NNLL+NNLO

Author

Monni, P., Re, E., Torrielli, P., Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and Malaval, Virginie

Subjects
[PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Phenomenology, FOS: Physical sciences, Nuclear Experiment, High Energy Physics - Experiment
Abstract

We propose a new approach to the resummation of the transverse-momentum distribution of a high-mass colour-singlet system in hadronic collisions. The resummation is performed in momentum space and is free of kinematic singularities at small transverse momentum. We derive a formula accurate at the next-to-next-to-leading-logarithmic level, and present the first matched predictions to next-to-next-to-leading order for Higgs-boson production in gluon fusion at the LHC. This method can be adapted to all observables featuring kinematic cancellations in the infrared region., Comment: Minor changes to abstract and text, a few references added. First figure was changed to make its content clearer. The text referring to the plot was changed accordingly

Published
2016

12. Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector

Author

Florian, D. de, Grojean, C., Maltoni, F., Mariotti, C., Nikitenko, A., Pieri, M., Savard, P., Schumacher, M., Tanaka, R., Aggleton, R., Ahmad, M.A., Allanach, B., Anastasiou, C., Astill, W., Badger, S.A., Badziak, M., Baglio, J., Bagnaschi, E., Ballestrero, A., Banfi, A., Barducci, D., Beckingham, M., Becot, C., Bélanger, G., Bellm, J., Belyaev, N., Bernlochner, F. U., Beskidt, C., Biekötter, A., Bishara, Fady, Bizon, W., Bomark, N. E., Bonvini, Marco, Borowka, S., Bortolotto, V., Boselli, S., Botella, F. J., Boughezal, R., Branco, G. C., Brehmer, J., Brenner, L., Bressler, S., Brivio, I., Broggio, A., Brun, V.H., Buchalla, G., Burgard, C. D., Calandri, A., Caminada, L., Armadans, R. Caminal, Campanario, F., Campbell, J., Caola, Fabrizio, Calame, C. M. Carloni, Carrazza, Stefano, Carvalho, A., Casolino, M., Cata, O., Celis, A., Cerutti, Francesco, Chanon, N., Chen, M., Chen, X., Nejad, B. Chokoufé, Christensen, N., Ciuchini, M., Contino, R., Corbett, T., Costa, S.R., Curtin, D.M., Dall'Osso, M., David, A., Dawson, S.J., Blas, J. de, Boer, W. de, Manzano, P. de Castro, Degrande, C., Rueda-Delgado, L.M., Demartin, Federico, Denner, A., Micco, B. Di, Nardo, R. Di, Dittmaier, S., Dobado, A., Dorigo, T., Dreyer, F. A., Dührssen, M., Duhr, C., Dulat, F., Ecker, K., Ellis, K.A., Ellwanger, U., Englert, C., Espriu, D., Falkowski, A., Fayard, L., Feger, R., Ferrera, G., Ferroglia, A., Fidanza, N., Figy, T., Flechl, M., Fontes, J.D., Forte, Stefano, Francavilla, P., Franco, E, Frederix, R., Freitas, A., Freitas, F., Frensch, F., Frixione, S., Fuks, B., Furlan, E., Gadatsch, S., Gao, J., Gao, Y., Garzelli, M. V., Gehrmann, T., Gerosa, R., Ghezzi, M., Ghosh, D., Gieseke, S., Gillberg, D., Giudice, G. F., Glover, E. W. N., Goertz, F., Gonçalves, D., Gonzalez-Fraile, J., Gorbahn, M., Gori, S., Gottardo, C. A., Gouzevitch, Maxime, Govoni, P., Gray, D., Grazzini, M., Greiner, N., Greljo, A., Grigo, J., Gritsan, A. V., Gröber, R., Guindon, S., Haber, H. E., Han, C., Han, T.S., Harlander, R., Harrendorf, M. A., Hartanto, H. B., Hays, C., Heinemeyer, S., Heinrich, G., Herrero, M., Herzog, F., Hespel, B., Hirschi, V., Hoeche, S., Honeywell, S., Huber, S. J., Hugonie, C., Huston, Joey, Ilnicka, A., Isidori, G., Jäger, B., Jaquier, M., Jones, S. P., Juste, A., Kallweit, S., Kaluza, A., Kardos, A., Karlberg, A.T., Kassabov, Zahari, Kauer, N., Kazakov, D. I., Kerner, M., Kilian, W., Kling, M.F., Köneke, K., Kogler, R., Konoplich, R., Kortner, S., Kraml, S., Krause, C., Krauss, F., Krawczyk, P.M., Kulesza, Anna, Kuttimalai, S., Lane, R., Lazopoulos, A., Lee, W.G., Lenzi, P., Lewis, I. M., Li, Y., Liebler, S., van Lindert, E.J., Liu, X., Liu, Z., Llanes-Estrada, F. J., Logan, H. E., Lopez-Val, D., Low, I., Luisoni, G., Maierhöfer, P., Maina, E., Mansoulié, B., Mantler, H., Mantoani, M., Marini, A. C., Outschoorn, V. I. Martinez, Marzani, Simone, Marzocca, D., Massironi, A., Mawatari, K., Mazzitelli, J., McCarn, A., Mellado, B., Melnikov, K., Menari, S. B., Merlo, L., Meyer, C., Milenovic, P., Mimasu, K., Mishima, S., Mistlberger, B., Moch, S. O., Mohammadi, A., Monni, P. F., Montagna, G., Llácer, M. Moreno, Moretti, N., Moretti, S., Motyka, L., Mück, A., Mühlleitner, M., Munir, S., Musella, P., Nadolsky, Pavel, Napoletano, D., Nebot, M., Neu, C., Neubert, R.E.M., Nevzorov, R., Nicrosini, O., Nielsen, J., Nikolopoulos, K., No, J. M., O'Brien, C., Ohl, T., Oleari, C., Orimoto, T. J., Pagani, D., Pandini, C. E., Papaefstathiou, A., Papanastasiou, A. S., Passarino, G., Pecjak, B. D., Pelliccioni, M., Perez, J.G., Perrozzi, Luca, Petriello, F., Petrucciani, G., Pianori, E., Piccinini, F., Pierini, M., Pilkington, A., Plätzer, S., Plehn, T., Podskubka, R., Potter, C. T., Pozzorini, S., Prokofiev, K., Pukhov, A., Puljak, I., Queitsch-Maitland, M., Quevillon, J., Rathlev, D., Rauch, S.A.M., Re, E., Rebelo, M. N., Rebuzzi, D., Reina, L., Reuschle, C., Reuter, J., Riembau, M., Riva, F., Rizzi, A., Robens, T., Röntsch, R., Rojo, J., Romão, J. C., Rompotis, N., Roskes, J., Roth, R., Salam, Gavin P., Salerno, R., Sampaio, M. O. P., Santos, R., Sanz-Nebot, V., Sanz-Cillero, J. J., Sargsyan, H., Sarica, U., Schichtel, P., Schlenk, J., Schmidt, T., Schmitt, C., Schönherr, M., Schubert, U., Schulze, M., Sekula, S. J., Sekulla, M., Shabalina, E., Shao, H. -S., Shelton, J., Shepherd-Themistocleous, C. H., Shim, S. Y., Siegert, F., Signer, A., Da Silva, J.P., Silvestrini, L., Sjodahl, M., Slavich, P., Slawinska, M., Soffi, L., Spannowsky, M., Speckner, C., Sperka, D. M., Spira, M., Stål, O., Staub, F., Stebel, T., Stefaniak, T., Steinhauser, M., Stewart, I. W., Strassler, M. J., Streicher, J., Strom, D. M., Su, S., Sun, X., Tackmann, F. J., Tackmann, K., Teixeira, A. M., Lima, R. Teixeira de, Theeuwes, V., Thorne, R., Tommasini, D., Torrielli, P., Tosi, M., Tramontano, F., Trócsányi, Z., Trott, M., Tsinikos, I., Ubiali, Maria, Vanlaer, P., Verkerke, W., Vicini, A., Viliani, L., Vryonidou, E., Wackeroth, D., Wagner, C. E. M., Wang, J., Wayand, S., Weiglein, G., Weiss, C., Wiesemann, M., Williams, C., Winter, J., Winterbottom, D., Wolf, R., Xiao, S.M., Yang, L. L., Yohay, R., Yuen, S. P. Y., Zanderighi, G., Zaro, M., Zeppenfeld, D., Ziegler, R., Zirke, T., Zupan, J., de Florian, Daniel, fabio, maltoni, Chiara, Mariotti, Nikitento, Aleksandr, Marco, Pieri, Pierre, Savard, and (Astro)-Particles Physics

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

This Report summarizes the results of the activities of the LHC Higgs Cross Section Working Group in the period 2014-2016. The main goal of the working group was to present the state-of-the-art of Higgs physics at the LHC, integrating all new results that have appeared in the last few years. The first part compiles the most up-to-date predictions of Higgs boson production cross sections and decay branching ratios, parton distribution functions, and off-shell Higgs boson production and interference effects. The second part discusses the recent progress in Higgs effective field theory predictions, followed by the third part on pseudo-observables, simplified template cross section and fiducial cross section measurements, which give the baseline framework for Higgs boson property measurements. The fourth part deals with the beyond the Standard Model predictions of various benchmark scenarios of Minimal Supersymmetric Standard Model, extended scalar sector, Next-to-Minimal Supersymmetric Standard Model and exotic Higgs boson decays. This report follows three previous working-group reports: Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables (CERN-2011-002), Handbook of LHC Higgs Cross Sections: 2. Differential Distributions (CERN-2012-002), and Handbook of LHC Higgs Cross Sections: 3. Higgs properties (CERN-2013-004). The current report serves as the baseline reference for Higgs physics in LHC Run 2 and beyond., Comment: 869 pages, 295 figures, 248 tables and 1645 citations. Working Group web page: https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHXSWG

Published
2016
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13. Precise predictions for boosted Higgs production

Author

Becker, K., Caola, F., Massironi, A., Mistlberger, B., Pier Francesco Monni, Chen, X., Frixione, S., Gehrmann, T., Glover, N., Hamilton, K., Huss, A., Jones, S. P., Karlberg, A., Kerner, M., Kudashkin, K., Lindert, J. M., Luisoni, G., Mangano, M. L., Pozzorini, S., Re, E., Salam, G. P., Vryonidou, E., Wever, C., Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), and Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)

Subjects
transverse momentum: high, hep-ex, higher-order: 2, High Energy Physics::Phenomenology, higher-order: 1, FOS: Physical sciences, hep-ph, High Energy Physics - Experiment, Higgs particle: boosted particle, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), effective field theory, vector boson: fusion, kinematics, Higgs particle: production, gauge boson: associated production, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], quantum chromodynamics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], top: pair production, Monte Carlo, gluon: fusion, Particle Physics - Experiment, Particle Physics - Phenomenology
Abstract

Inclusive Higgs boson production at large transverse momentum is induced by different production channels. We focus on the leading production through gluon fusion, and perform a consistent combination of the state of the art calculations obtained in the infinite-top-mass effective theory at next-to-next-to-leading order (NNLO) and in the full Standard Model (SM) at next-to-leading order (NLO). We thus present approximate QCD predictions for this process at NNLO, and a study of the corresponding perturbative uncertainties. This calculation is then compared with those obtained with commonly used event generators, and we observe that the description of the considered kinematic regime provided by these tools is in good agreement with state of the art calculations. Finally, we present accurate predictions for other production channels such as vector boson fusion, and associated production with a gauge boson, and with a $t\bar{t}$ pair. We find that, at large transverse momentum, the contribution of other production modes is substantial, and therefore must be included for a precise theory prediction of this observable., 15 pages, 4 figures, 9 tables. Version approved by the Higgs Cross Section Working Group

14. The SM and NLO Multileg and SM MC Working Groups: Summary Report

Author

Alcaraz Maestre, J., Heinrich, G., Buckley, A., Cacciari, M., Campanario, F., Chanon, N., Chachamis, G., Ciulli, V., Cossutti, F., Cullen, G., Denner, A., Dittmaier, S., Huston, J., Fleischer, J., Frederix, R., Frixione, S., Gao, J., Garren, L., Gascon-Shotkin, S., Greiner, N., Guillet, J. P., Hapola, T., Hartland, N. P., Krauss, F., Hesketh, G., Hirschi, V., Hoeth, H., Jezo, T., Kallweit, S., Kovarik, K., Kusina, A., Liang, Z., Lenzi, P., Lonnblad, L., Maitre, D., Lopez-Villarejo, J. J., Luisoni, G., Maltoni, F., Mastrolia, P., Nadolsky, P. M., Oleari, C., Olness, F. I., Ossola, G., Pilon, E., Platzer, S., Nurse, E., Pozzorini, S., Prestel, S., Re, E., Reiter, T., Riemann, T., Rojo, J., Salam, G. P., Sapeta, S., Schienbein, I., Schonherr, M., Pittau, R., Schulz, H., Schulze, M., Schwoerer, M., Skands, P., Smillie, J. M., Somogyi, G., Soyez, G., Stavreva, T., Stewart, I. W., Stockton, M., Alioli, S., or, Z. Sz\H., Tackmann, F. J., Torrielli, P., Tramontano, F., Tripiana, M., Trocsanyi, Z., Ubiali, M., Yundin, V., Weinzierl, S., Winter, J., Andersen, J. R., Yu, J. Y., Zapp, K., SM and NLO Multileg Working Group Collaboration, SM MC Working Group Collaboration, Ball, R. D., Edinburgh University, Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institute of High Energy Physics (IHEP), Chinese Academy of Sciences [Changchun Branch] (CAS), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Medical Office of Gynaecology, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), National Institute for Subatomic Physics [Amsterdam] (NIKHEF), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), National Center for Atmospheric Research [Boulder] (NCAR), Les Houches Workshop Proceedings, Boudjema, Fawzi, University of Edinburgh, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
showers [parton], [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], higher-order, CMS, High Energy Physics::Phenomenology, FOS: Physical sciences, Monte Carlo [numerical calculations], ATLAS, programming, production [jet], HERWIG, High Energy Physics - Experiment, [PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), CERN LHC Coll, High Energy Physics - Phenomenology (hep-ph), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], quantum chromodynamics, PYTHIA, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Batavia TEVATRON Coll, distribution function [parton], Particle Physics - Phenomenology
Abstract

The 2011 Les Houches workshop was the first to confront LHC data. In the two years since the previous workshop there have been significant advances in both soft and hard QCD, particularly in the areas of multi-leg NLO calculations, the inclusion of those NLO calculations into parton shower Monte Carlos, and the tuning of the non-perturbative parameters of those Monte Carlos. These proceedings describe the theoretical advances that have taken place, the impact of the early LHC data, and the areas for future development., Comment: 220 pages

15. Dark Matter Benchmark Models for Early LHC Run-2 Searches: Report of the ATLAS/CMS Dark Matter Forum

Author

Daniel Abercrombie, Nural Akchurin, Ece Akilli, Juan Alcaraz Maestre, Brandon Allen, Barbara Alvarez Gonzalez, Jeremy Andrea, Alexandre Arbey, Georges Azuelos, Patrizia Azzi, Mihailo Backović, Yang Bai, Swagato Banerjee, James Beacham, Alexander Belyaev, Antonio Boveia, Amelia Jean Brennan, Oliver Buchmueller, Matthew R. Buckley, Giorgio Busoni, Michael Buttignol, Giacomo Cacciapaglia, Regina Caputo, Linda Carpenter, Nuno Filipe Castro, Guillelmo Gomez Ceballos, Yangyang Cheng, John Paul Chou, Arely Cortes Gonzalez, Chris Cowden, Francesco D’Eramo, Annapaola De Cosa, Michele De Gruttola, Albert De Roeck, Andrea De Simone, Aldo Deandrea, Zeynep Demiragli, Anthony DiFranzo, Caterina Doglioni, Tristan du Pree, Robin Erbacher, Johannes Erdmann, Cora Fischer, Henning Flaecher, Patrick J. Fox, Benjamin Fuks, Marie-Helene Genest, Bhawna Gomber, Andreas Goudelis, Johanna Gramling, John Gunion, Kristian Hahn, Ulrich Haisch, Roni Harnik, Philip C. Harris, Kerstin Hoepfner, Siew Yan Hoh, Dylan George Hsu, Shih-Chieh Hsu, Yutaro Iiyama, Valerio Ippolito, Thomas Jacques, Xiangyang Ju, Felix Kahlhoefer, Alexis Kalogeropoulos, Laser Seymour Kaplan, Lashkar Kashif, Valentin V. Khoze, Raman Khurana, Khristian Kotov, Dmytro Kovalskyi, Suchita Kulkarni, Shuichi Kunori, Viktor Kutzner, Hyun Min Lee, Sung-Won Lee, Seng Pei Liew, Tongyan Lin, Steven Lowette, Romain Madar, Sarah Malik, Fabio Maltoni, Mario Martinez Perez, Olivier Mattelaer, Kentarou Mawatari, Christopher McCabe, Théo Megy, Enrico Morgante, Stephen Mrenna, Chang-Seong Moon, Siddharth M. Narayanan, Andy Nelson, Sérgio F. Novaes, Klaas Ole Padeken, Priscilla Pani, Michele Papucci, Manfred Paulini, Christoph Paus, Jacopo Pazzini, Björn Penning, Michael E. Peskin, Deborah Pinna, Massimiliano Procura, Shamona F. Qazi, Davide Racco, Emanuele Re, Antonio Riotto, Thomas G. Rizzo, Rainer Roehrig, David Salek, Arturo Sanchez Pineda, Subir Sarkar, Alexander Schmidt, Steven Randolph Schramm, William Shepherd, Gurpreet Singh, Livia Soffi, Norraphat Srimanobhas, Kevin Sung, Tim M.P. Tait, Timothee Theveneaux-Pelzer, Marc Thomas, Mia Tosi, Daniele Trocino, Sonaina Undleeb, Alessandro Vichi, Fuquan Wang, Lian-Tao Wang, Ren-Jie Wang, Nikola Whallon, Steven Worm, Mengqing Wu, Sau Lan Wu, Hongtao Yang, Yong Yang, Shin-Shan Yu, Bryan Zaldivar, Marco Zanetti, Zhiqing Zhang, Alberto Zucchetta, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Oviedo Univ, Louisville Univ, Duke Univ, CERN, Heidelberg Univ, Cornell Univ, INFN Padua, Boston Univ, Rutgers State Univ, NIKHEF, Paris LPTHE, Hyderabad Univ, UC Irvine, Munich MPI, MIT, INFN Rome, SISSA Trieste, LBL, Rhein Westfal TH Aachen, Princeton Univ, Delhi Univ, Florida Univ, Univ Maryland, Texas Tech Univ, Univ Geneva, CIEMAT, Univ Lyon, CNRS, Ecole Normale Super Lyon, Univ Montreal, TRIUMF, INFN Padova, Univ Wisconsin, Ohio State Univ, Rutherford Appleton Lab, Univ Southampton, Univ Melbourne, Imperial Coll London, SISSA, INFN, Univ Strasbourg, Univ Calif Santa Cruz, LIP Minho, Univ Porto, Univ Chicago, IFAE Barcelona, Univ Calif Berkeley, LBNL, Univ Zurich, Univ Lyon 1, Univ Calif Irvine, Dept Theoret Phys, Lund Univ, San Diego Univ, Louvain CP3, Osaka Univ, Kings Coll London, Freiburg Univ, DESY, Kyungpook Natl Univ, Vanderbilt Univ, Brandeis Univ, Perimeter, Annecy LAPTH, Mainz Univ, Univ Ghent, LPHE Lausanne, Univ Birmingham, Beijing IHEP, Shanghai Jiao Tong Univ, LAPTh, Zurich Univ, Univ Calif Davis, Tech Univ Dortmund, Univ Bristol, Fermilab Natl Accelerator Lab, Univ Grenoble Alpes, Austrian Acad Sci, Northwestern Univ, Univ Oxford, Univ Malaya, Harvard Univ, Univ Durham, Natl Cent Univ, Chung Ang Univ, Univ Tokyo, Vrije Univ Brussel IIHE, Lab Phys Corpusculaire, Catholic Univ Louvain, IPPP Durham, Vrije Univ Brussel, Int Solvay Inst, Univ Amsterdam, FNAL, Universidade Estadual Paulista (Unesp), Stockholm Univ, Carnegie Mellon Univ, Stanford Univ, Univ Wien, Quaid I Azam Univ, SLAC, Max Planck Inst Phys & Astrophys, Nikhef, GRAPPA, Univ Napoli, Niels Bohr Inst, Univ Hamburg, Santa Cruz Inst Particle Phys, Univ Copenhagen, Chulalongkorn Univ, Clermont Univ, Univ Blaise Pascal, Southampton Univ, Univ Padua, Northeastern Univ, Univ Washington, Univ Libre Bruxelles, Univ Paris Sud 11, Abercrombie D., Akchurin N., Akilli E., Maestre J.A., Allen B., Gonzalez B.A., Andrea J., Arbey A., Azuelos G., Azzi P., Backovic M., Bai Y., Banerjee S., Beacham J., Belyaev A., Boveia A., Brennan A.J., Buchmueller O., Buckley M.R., Busoni G., Buttignol M., Cacciapaglia G., Caputo R., Carpenter L., Castro N.F., Ceballos G.G., Cheng Y., Chou J.P., Gonzalez A.C., Cowden C., D'Eramo F., De Cosa A., De Gruttola M., De Roeck A., De Simone A., Deandrea A., Demiragli Z., DiFranzo A., Doglioni C., du Pree T., Erbacher R., Erdmann J., Fischer C., Flaecher H., Fox P.J., Fuks B., Genest M.-H., Gomber B., Goudelis A., Gramling J., Gunion J., Hahn K., Haisch U., Harnik R., Harris P.C., Hoepfner K., Hoh S.Y., Hsu D.G., Hsu S.-C., Iiyama Y., Ippolito V., Jacques T., Ju X., Kahlhoefer F., Kalogeropoulos A., Kaplan L.S., Kashif L., Khoze V.V., Khurana R., Kotov K., Kovalskyi D., Kulkarni S., Kunori S., Kutzner V., Lee H.M., Lee S.-W., Liew S.P., Lin T., Lowette S., Madar R., Malik S., Maltoni F., Perez M.M., Mattelaer O., Mawatari K., McCabe C., Megy T., Morgante E., Mrenna S., Moon C.-S., Narayanan S.M., Nelson A., Novaes S.F., Padeken K.O., Pani P., Papucci M., Paulini M., Paus C., Pazzini J., Penning B., Peskin M.E., Pinna D., Procura M., Qazi S.F., Racco D., Re E., Riotto A., Rizzo T.G., Roehrig R., Salek D., Pineda A.S., Sarkar S., Schmidt A., Schramm S.R., Shepherd W., Singh G., Soffi L., Srimanobhas N., Sung K., Tait T.M.P., Theveneaux-Pelzer T., Thomas M., Tosi M., Trocino D., Undleeb S., Vichi A., Wang F., Wang L.-T., Wang R.-J., Whallon N., Worm S., Wu M., Wu S.L., Yang H., Yang Y., Yu S.-S., Zaldivar B., Zanetti M., Zhang Z., Zucchetta A., Physics, Elementary Particle Physics, Universidade do Minho, GRAPPA (ITFA, IoP, FNWI), ATLAS (IHEF, IoP, FNWI), Daniel, A, Nural, A, Ece, A, Juan Alcaraz, M, Brandon, A, Barbara Alvarez, G, Jeremy, A, Alexandre, A, Georges, A, Patrizia, A, Mihailo, B, Yang, B, Swagato, B, James, B, Alexander, B, Antonio, B, Amelia Jean, B, Oliver, B, Matthew R., B, Giorgio, B, Michael, B, Giacomo, C, Regina, C, Linda, C, Nuno Filipe, C, Guillelmo Gomez, C, Yangyang, C, John Paul, C, Arely Cortes, G, Chris, C, Francesco, D, Annapaola De, C, Michele De, G, Albert De, R, Andrea De, S, Aldo, D, Zeynep, D, Anthony, D, Caterina, D, Tristan du PreeRobin, E, Johannes, E, Cora, F, Henning, F, Patrick J., F, Benjamin, F, Marie-Helene, G, Bhawna, G, Andreas, G, Johanna, G, John, G, Kristian, H, Ulrich, H, Roni, H, Philip C., H, Kerstin, H, Siew Yan, H, Dylan George, H, Shih-Chieh, H, Yutaro, I, Valerio, I, Thomas, J, Xiangyang, J, Felix, K, Alexis, K, Laser Seymour, K, Lashkar, K, Valentin V., K, Raman, K, Khristian, K, Dmytro, K, Suchita, K, Shuichi, K, Viktor, K, Hyun Min, L, Sung-Won, L, Seng Pei, L, Tongyan, L, Steven, L, Romain, M, Sarah, M, Fabio, M, Mario Martinez, P, Olivier, M, Kentarou, M, Christopher, M, Théo, M, Enrico, M, Stephen, M, Siddharth M., N, Andy, N, Sérgio F., N, Klaas Ole, P, Priscilla, P, Michele, P, Manfred, P, Christoph, P, Jacopo, P, Björn, P, Michael E., P, Deborah, P, Massimiliano, P, Shamona F., Q, Davide, R, Re, E, Antonio, R, Thomas G., R, Rainer, R, David, S, Arturo Sanchez, P, Subir, S, Alexander, S, Steven Randolph, S, William, S, Gurpreet, S, Livia, S, Norraphat, S, Kevin, S, Tim M. P., T, Timothee, T, Marc, T, Mia, T, Daniele, T, Sonaina, U, Alessandro, V, Fuquan, W, Lian-Tao, W, Ren-Jie, W, Nikola, W, Steven, W, Mengqing, W, Sau Lan, W, Hongtao, Y, Yong, Y, Shin-Shan, Y, Bryan, Z, Marco, Z, Zhiqing, Z, Alberto, Z, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
dark matter: interaction, Simplified model, Physics::Instrumentation and Detectors, mass [dark matter], Parameter space, 01 natural sciences, High Energy Physics - Experiment, dark matter: coupling, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), benchmark, effective field theory, search for [dark matter], scattering [p p], Effective field theory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Dark Matter, Simplified models, 010303 astronomy & astrophysics, Physics, Large Hadron Collider, Atlas (topology), CMS, hep-ph, ATLAS, Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici, High Energy Physics - Phenomenology, CERN LHC Coll, interpretation of experiments, LHC, colliding beams [p p], interaction [dark matter], EFT, Particle Physics - Experiment, Particle physics, p p: scattering, Ciências Naturais::Ciências Físicas, WIMP, dark matter: search for, Ciências Físicas [Ciências Naturais], Dark matter, FOS: Physical sciences, dark matter: production, coupling [dark matter], 0103 physical sciences, ddc:530, mediation, ComputingMethodologies_COMPUTERGRAPHICS, Particle Physics - Phenomenology, Science & Technology, 010308 nuclear & particles physics, hep-ex, dark matter: mass, Astronomy and Astrophysics, production [dark matter], Formalism (philosophy of mathematics), Space and Planetary Science, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], direct detection, p p: colliding beams
Abstract

This document is the final report of the ATLAS-CMS Dark Matter Forum, a forum organized by the ATLAS and CMS collaborations with the participation of experts on theories of Dark Matter, to select a minimal basis set of dark matter simplified models that should support the design of the early LHC Run-2 searches. A prioritized, compact set of benchmark models is proposed, accompanied by studies of the parameter space of these models and a repository of generator implementations. This report also addresses how to apply the Effective Field Theory formalism for collider searches and present the results of such interpretations., The authors would like to thank Daniel Whiteson for helping in the review of this document. This research was supported by the Munich Institute for Astro- and Particle Physics (MIAPP) of the DFG cluster of excellence "Origin and Structure of the Universe''. The authors would like to express a special thanks to the Mainz Institute for Theoretical Physics (MITP) for its hospitality and support. P. Pani wishes to thank the support of the Computing Infrastructure of Nikhef. In addition we thank CERN and acknowledge the support of: DOE and NSF (USA), including grant DE-SC0011726 for the preparation of this manuscript; SER, SNSF and Cantons of Bern and Geneva, Switzerland; MINECO, Spain; European Union, where the preparation of this manuscript is part of a project that has received funding from the European Research Council under the European Union's Horizon 2020 research and innovation program (grant agreement 679305); IN2P3-CNRS, CEA-DSM/IRFU, France; NSERC, NRC, and CFI, Canada; INFN, Italy; FNRS and FWO, Belgium; STFC, United Kingdom; ARC, Australia; GRICES and FCT, Portugal; SRC, Sweden; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; Austrian Academy of Sciences, Austria; MOE and UM, Malaysia; National Research Foundation and Ministry of Education, Science and Technology, Korea; MEXT and JSPS, Japan; FOM and NWO, Netherlands; CNPq and FAPESP, Brazil; Atomic Energy Commission, Pakistan; DNRF, DNSRC and Lundbeck Foundation, Denmark; Thailand Center of Excellence in Physics, Institute for the Promotion of Teaching Science and Technology, Special Task Force for Activating Research and National Science and Technology Development Agency, Thailand; MOST, Taiwan., info:eu-repo/semantics/publishedVersion

Published
2015

16. Top-pair production at the LHC with MINNLOPS

Author

Mazzitelli, Javier, Monni, Pier, Nason, Paolo, Re, Emanuele, Wiesemann, Marius, Zanderighi, Giulia, Mazzitelli, J, Monni, P, Nason, P, Re, E, Wiesemann, M, Zanderighi, G, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), and Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, higher-order, Nuclear Theory, FOS: Physical sciences, top, Top Quark, decay, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], tree approximation, parton, heavy quark, Monte Carlo, computer, Particle Physics - Phenomenology, hep-ex, High Energy Physics::Phenomenology, Higher-Order Perturbative Calculation, hep-ph, showers, Parton Shower, High Energy Physics - Phenomenology, pair production, CERN LHC Coll, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

We consider the production of a pair of heavy quarks and illustrate the derivation of the MiNNLO method to match next-to-next-to-leading order calculations with parton showers (NNLO+PS) for this class of processes. As a first application, we construct an event generator for the fully differential simulation of hadronic top-quark pair production at NNLO+PS and discuss all details of its implementation in a parton shower Monte Carlo framework. We present new phenomenological results for the Large Hadron Collider obtained by including the tree-level decays of the top quarks, while accounting for spin-correlation effects. A comprehensive comparison to LHC measurements shows an excellent description of experimental data across multiple hadronic and leptonic particle-level observables. The computer code is available for download within the POWHEG-BOX., Comment: 55 pages, 12 figures

Published
2022

17. Fiducial Higgs and Drell-Yan distributions at N3LL′+NNLO with RadISH

Author

Emanuele Re, Luca Rottoli, P. Torrielli, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), University of Zurich, Rottoli, Luca, Re, E, Rottoli, L, and Torrielli, P

Subjects
Drell-Yan process, Nuclear and High Energy Physics, Particle physics, Higgs Physics, 530 Physics, lepton: pair production, FOS: Physical sciences, Position and momentum space, QC770-798, 10192 Physics Institute, transverse momentum, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Nuclear and particle physics. Atomic energy. Radioactivity, Perturbative QCD, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 3106 Nuclear and High Energy Physics, Resummation, Nuclear Experiment, 010306 general physics, two-photon, Physics, Large Hadron Collider, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, higher-order: 2, Order (ring theory), Observable, High Energy Physics - Phenomenology, transverse, CERN LHC Coll, Higgs Physic, resummation, Higgs particle: production, kinematics, gluon gluon: fusion, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Higgs boson, High Energy Physics::Experiment, color: singlet, Production (computer science)
Abstract

We present state-of-the-art predictions for transverse observables relevant to colour-singlet production at the LHC, in particular the transverse momentum of the colour singlet in gluon-fusion Higgs production and in neutral Drell-Yan lepton-pair production, as well as the $\phi^*_\eta$ observable in Drell Yan. We perform a next-to-next-to-next-to-leading logarithmic (N$^3$LL) resummation of such observables in momentum space according to the RadISH formalism, consistently including in our prediction all constant terms of relative order $\alpha_s^3$ with respect to the Born, thereby achieving N$^3$LL$^\prime$ accuracy. The calculation is fully exclusive with respect to the Born kinematics, which allows the application of arbitrary fiducial selection cuts on the decay products of the colour singlet. We supplement our results with a transverse-recoil prescription, accounting for dominant classes of subleading-power corrections in a fiducial setup. The resummed predictions are matched with fixed-order differential spectra at next-to-next-to-leading order (NNLO) accuracy. A phenomenological comparison is carried out with 13 TeV LHC data relevant to the Higgs to di-photon channel, as well as to neutral Drell-Yan lepton-pair production. Overall, the inclusion of ${\cal O}(\alpha_s^3)$ constant terms, and to a lesser extent of transverse-recoil effects, proves beneficial for the comparison of theoretical predictions to data, leaving a residual theoretical uncertainty in the resummation region at the 2-5% level for Drell-Yan observables, and 5-7% in Higgs production., Comment: 35 pages, 9 figures. Journal version

Published
2021

18. Next-to-Next-to-Leading Order Event Generation for Top-Quark Pair Production

Author

Giulia Zanderighi, Marius Wiesemann, Pier Francesco Monni, Javier Mazzitelli, Paolo Nason, Emanuele Re, Max Planck Institute for Physics, European Organization for Nuclear Research (CERN), Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Mazzitelli, J, Monni, P, Nason, P, Re, E, Wiesemann, M, Zanderighi, G, Istituto Nazionale di Fisica Nucleare, Universita Milano-Bicocca (INFN), and Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)- Istituto Nazionale di Fisica Nucleare (INFN)

Subjects
Quark, Top quark, Particle physics, Hadron, Monte Carlo method, hadron hadron: colliding beams, FOS: Physical sciences, General Physics and Astronomy, 01 natural sciences, High Energy Physics - Experiment, parton: showers, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, quantum chromodynamics, radiative correction, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nuclear Experiment, charge: color, Particle Physics - Phenomenology, [PHYS]Physics [physics], Quantum chromodynamics, Physics, Large Hadron Collider, hep-ex, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, higher-order: 2, hep-ph, QCD, NNLO computations, top quark, LHC phenomenology, High Energy Physics - Phenomenology, Pair production, CERN LHC Coll, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, top: pair production, numerical calculations: Monte Carlo, Phenomenology (particle physics), Particle Physics - Experiment
Abstract

The production of top-quark pairs in hadronic collisions is among the most important reactions in modern particle physics phenomenology and constitutes an instrumental avenue to study the properties of the heaviest quark observed in nature. The analysis of this process at the Large Hadron Collider relies heavily on Monte Carlo simulations of the final state events, whose accuracy is challenged by the outstanding precision of experimental measurements. In this letter we present the first matched computation of top-quark pair production at next-to-next-to-leading order in QCD with all-order radiative corrections as implemented via parton-shower simulations. Besides its intrinsic relevance for LHC phenomenology, this work also establishes an important step towards the simulation of other hadronic processes with colour charges in the final state., Journal version

Published
2021

19. Jet Cross Sections at the LHC and the Quest for Higher Precision

Author

Thomas Gehrmann, Nigel Glover, Silvan Kuttimalai, Alexander Huss, Joao Pires, Xuan Chen, Andrew Buckley, Stefan Höche, J. Huston, Johannes Bellm, Aude Gehrmann-De Ridder, Emanuele Re, Simon Plätzer, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), University of Zurich, Bellm, J, Buckley, A, Chen, X, Ridder, A, Gehrmann, T, Glover, N, Hoche, S, Huss, A, Huston, J, Kuttimalai, S, Pires, J, Platzer, S, Re, E, and Bellm, Johannes

Subjects
+Higgs+particle+jet%22">p p --> Higgs particle jet, Physics and Astronomy (miscellaneous), Parton, jet: transverse momentum, 01 natural sciences, 7. Clean energy, quantum chromodynamics: correction, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics, Jet (fluid), Large Hadron Collider, +jet+jet%22">p p --> jet jet, higher-order: 2, Perturbative QCD, hep-ph, Radius, High Energy Physics - Phenomenology, CERN LHC Coll, Higgs particle: production, Higgs boson, jet: pair production, QCD, LHC, jets, (N)NLO, Monte Carlo generators, Regular Article - Theoretical Physics, Particle Physics - Experiment, dijet: production, Particle physics, p p: scattering, 530 Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, lcsh:Astrophysics, 10192 Physics Institute, parton: showers, Renormalization, Z0: production, Cross section (physics), lcsh:QB460-466, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 3101 Physics and Astronomy (miscellaneous), 010306 general physics, Engineering (miscellaneous), correction: higher-order, Particle Physics - Phenomenology, hep-ex, 010308 nuclear & particles physics, +Z0+jet%22">p p --> Z0 jet, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], lcsh:QC770-798, High Energy Physics::Experiment, 2201 Engineering (miscellaneous)
Abstract

We perform a phenomenological study of $Z$ plus jet, Higgs plus jet and di-jet production at the Large Hadron Collider. We investigate in particular the dependence of the leading jet cross section on the jet radius as a function of the jet transverse momentum. Theoretical predictions are obtained using perturbative QCD calculations at the next-to and next-to-next-to-leading order, using a range of renormalization and factorization scales. The fixed order predictions are compared to results obtained from matching next-to-leading order calculations to parton showers. A study of the scale dependence as a function of the jet radius is used to provide a better estimate of the scale uncertainty for small jet sizes. The non-perturbative corrections as a function of jet radius are estimated from different generators., Comment: 23 pages, 19 figures

Published
2020

20. NLO QCD+NLO EW corrections to diboson production matched to parton shower

Author

Mauro Chiesa, Carlo Oleari, Emanuele Re, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Chiesa, M, Oleari, C, and Re, E

Subjects
Particle physics, Physics and Astronomy (miscellaneous), spin: correlation, effect: off-shell, FOS: Physical sciences, Parton, lcsh:Astrophysics, 01 natural sciences, quantum chromodynamics: correction, High Energy Physics - Experiment, parton: showers, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, lcsh:QB460-466, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Parton shower, Nuclear Experiment, Engineering (miscellaneous), computer, Spin-½, Quantum chromodynamics, Physics, Large Hadron Collider, EW corrections, NLO Monte Carlo shower programs, 010308 nuclear & particles physics, vector boson: pair production, High Energy Physics::Phenomenology, 3. Good health, High Energy Physics - Phenomenology, electroweak interaction: correction, Pair production, CERN LHC Coll, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], lepton: final state, interface, lcsh:QC770-798, Production (computer science), High Energy Physics::Experiment
Abstract

We present the matching of NLO QCD and NLO EW corrections to parton showers for vector-boson pair production at the LHC. We consider leptonic final states, including resonant and non-resonant diagrams, spin correlations and off-shell effects. Our results are obtained interfacing the Recola2-Collier one-loop provider with the POWHEG-BOX-RES framework. We discuss our implementation, we validate it at fixed order, and we show our final results matched to parton shower. A by-product of our work is also a general interface between Recola2-Collier and POWHEG-BOX-RES. This is the first time that EW and QCD corrections to diboson production are consistently matched to parton showers., Comment: Added figs.6-7. Extended discussion in sect.5. Matches version published on epjc

Published
2020
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21. MiNNLO$_{PS}$: a new method to match NNLO QCD to parton showers

Author

Emanuele Re, Marius Wiesemann, Paolo Nason, Pier Francesco Monni, Giulia Zanderighi, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Monni, P, Nason, P, Re, E, Wiesemann, M, and Zanderighi, G

Subjects
Drell-Yan process, Nuclear and High Energy Physics, Particle physics, p p: scattering, Monte Carlo method, Nuclear Theory, FOS: Physical sciences, Parton, Jet (particle physics), 01 natural sciences, quantum chromodynamics: correction, High Energy Physics - Experiment, parton: showers, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Perturbative QCD, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Resummation, 010306 general physics, Parton shower, Nuclear Experiment, correction: higher-order, Particle Physics - Phenomenology, Quantum chromodynamics, Physics, NLO computations, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, higher-order: 2, Drell–Yan process, hep-ph, High Energy Physics - Phenomenology, CERN LHC Coll, Higgs particle: production, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], lcsh:QC770-798, High Energy Physics::Experiment, numerical calculations: Monte Carlo, top: pair production, Particle Physics - Experiment
Abstract

We present a novel method to combine QCD calculations at next-to-next-to-leading order (NNLO) with parton shower (PS) simulations, that can be applied to the production of heavy systems in hadronic collisions, such as colour singlets or a $t\bar{t}$ pair. The NNLO corrections are included by connecting the MiNLO$^\prime$ method with transverse-momentum resummation, and they are calculated at generation time without any additional reweighting, making the algorithm considerably efficient. Moreover, the combination of different jet multiplicities does not require any unphysical merging scale, and the matching preserves the structure of the leading logarithmic corrections of the Monte Carlo simulation for parton showers ordered in transverse momentum. We present proof-of-concept applications to hadronic Higgs production and the Drell-Yan process at the LHC., Comment: Fixed sign typo in Eq. (4.24)

Published
2020

22. Momentum-space resummation for transverse observables and the Higgs p⊥ at N3LL+NNLO

Author

Paolo Torrielli, Wojciech Bizon, Pier Francesco Monni, Emanuele Re, Luca Rottoli, Bizoń, W, Monni, P, Re, E, Rottoli, L, Torrielli, P, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), and Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)

Subjects
Particle physics, Nuclear and High Energy Physics, Higgs Physics, Monte Carlo method, FOS: Physical sciences, Position and momentum space, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Perturbative QCD, Rapidity, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Resummation, 010306 general physics, Scaling, Particle Physics - Phenomenology, Physics, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, Observable, hep-ph, High Energy Physics - Phenomenology, Pair production, Higgs Physic, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Higgs boson, lcsh:QC770-798, Particle Physics - Experiment
Abstract

We present an approach to the momentum-space resummation of global, recursive infrared and collinear safe observables featuring kinematic zeros away from the Sudakov limit. In the hadro-production of a generic colour singlet, we consider the family of inclusive observables which do not depend on the rapidity of the radiation, prime examples being the transverse momentum of the singlet, and $\phi^*$ in Drell-Yan pair production. We derive a resummation formula valid up to next-to-next-to-next-to-leading-logaritmic accuracy for the considered observables. This formula reduces exactly to the customary resummation performed in impact-parameter space in the known cases, and it also predicts the correct power-behaved scaling of the cross section in the limit of small value of the observable. We show how this formalism is efficiently implemented by means of Monte Carlo techniques in a fully exclusive generator that allows one to apply arbitrary cuts on the Born variables for any colour singlet, as well as to automatically match the resummed results to fixed-order calculations. As a phenomenological application, we present state-of-the-art predictions for the Higgs-boson transverse-momentum spectrum at the LHC at next-to-next-to-next-to-leading-logarithmic accuracy matched to fixed next-to-next-to-leading order., Comment: Added short appendix on small pt scaling

Published
2018
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23. Fiducial distributions in Higgs and Drell-Yan production at N$^{3}$LL+NNLO

Author

Wojciech Bizon, Pier Francesco Monni, Nigel Glover, Luca Rottoli, Paolo Torrielli, Emanuele Re, Xuan Chen, Aude Gehrmann-De Ridder, Thomas Gehrmann, Alexander Huss, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Bizoń, W, Chen, X, Gehrmann-De Ridder, A, Gehrmann, T, Glover, N, Huss, A, Monni, P, Re, E, Rottoli, L, Torrielli, P, Laboratoire d'Annecy-le-Vieux de Physique Théorique ( LAPTH ), Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), University of Zurich, and Re, Emanuele

Subjects
Drell-Yan process, Particle physics, Nuclear and High Energy Physics, 530 Physics, FOS: Physical sciences, 10192 Physics Institute, 01 natural sciences, High Energy Physics - Experiment, transverse momentum: momentum spectrum, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], NLO Computations, 0103 physical sciences, High Energy Physics - Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, Resummation, 3106 Nuclear and High Energy Physics, quantum chromodynamics: perturbation theory, 010306 general physics, Particle Physics - Phenomenology, Physics, Large Hadron Collider, Series (mathematics), hep-ex, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, higher-order: 2, hep-ph, Observable, QCD Phenomenology, Distribution (mathematics), CERN LHC Coll, resummation, Higgs particle: production, kinematics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Higgs boson, NLO Computation, lcsh:QC770-798, Production (computer science), [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], color: singlet, Perturbation theory (quantum mechanics), Particle Physics - Experiment
Abstract

The perturbative description of certain differential distributions across a wide kinematic range requires the matching of fixed-order perturbation theory with resummation of large logarithmic corrections to all orders. We present precise matched predictions for transverse-momentum distributions in Higgs boson (H) and Drell-Yan pair (DY) production as well as for the closely related ϕ η * distribution at the LHC. The calculation is exclusive in the Born kinematics, and allows for arbitrary fiducial selection cuts on the decay products of the colour singlets, which is of primary relevance for experimental analyses. Our predictions feature very small residual scale uncertainties and display a good convergence of the perturbative series. A comparison of the predictions for DY observables to experimental data at 8 TeV shows a very good agreement within the quoted errors., Journal of High Energy Physics, 2018 (12), ISSN:1126-6708, ISSN:1029-8479

Published
2018

24. NNLOPS accurate predictions for $W^+W^-$ production

Author

Giulia Zanderighi, Emanuele Re, Marius Wiesemann, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy-le-Vieux de Physique Théorique ( LAPTH ), Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), Re, E, Wiesemann, M, and Zanderighi, G

Subjects
lepton, Hadron, 01 natural sciences, High Energy Physics - Experiment, Vector boson, W: pair production, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Parton shower, Boson, Physics, new physics, CMS, vector boson, new physics: search for, higher-order: 2, hep-ph, ATLAS, QCD Phenomenology, High Energy Physics - Phenomenology, CERN LHC Coll, Production (computer science), Particle Physics - Experiment, Nuclear and High Energy Physics, Particle physics, spin: correlation, effect: off-shell, FOS: Physical sciences, parton: showers, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], NLO Computations, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Particle Physics - Phenomenology, polarization, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, Order (ring theory), Charge (physics), +electron+antineutrino%2Fe+muon%2B+neutrino%2Fmu%22">p p --> electron antineutrino/e muon+ neutrino/mu, Automatic Keywords, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], charge: asymmetry, NLO Computation, lcsh:QC770-798, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, hadron, Lepton
Abstract

We present novel predictions for the production of $W^+W^-$ pairs in hadron collisions that are next-to-next-to-leading order accurate and consistently matched to a parton shower (NNLOPS). All diagrams that lead to the process $pp\to e^- \bar \nu_e\;\mu^+\nu_\mu+X$ are taken into account, thereby including spin correlations and off-shell effects. For the first time full NNLOPS accuracy is achieved for a $2\to 4$ process. We find good agreement, at the 1$\sigma$ level, with the $W^+W^-$ rates measured by ATLAS and CMS. The importance of NNLOPS predictions is evident from differential distributions sensitive to soft-gluon effects and from the large impact ($10$% and more) of including next-to-next-to-leading order corrections on top of MiNLO. We define a charge asymmetry for the $W$ bosons and the leptons in $W^+W^-$ production at the LHC, which is sensitive to the $W$ polarizations and hence can be used as a probe of new physics., Comment: 40 pages, 11 figures, 3 tables

Published
2018

25. Constraining Light-Quark Yukawa Couplings from Higgs Distributions

Author

Fady Bishara, Ulrich Haisch, Pier Francesco Monni, Emanuele Re, Bishara, F, Haisch, U, Monni, P, and Re, E

Subjects
Quark, Particle physics, Higgs, LHC phenomenology, High Energy Physics::Lattice, FOS: Physical sciences, General Physics and Astronomy, 01 natural sciences, Spectral line, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Bounding overwatch, 0103 physical sciences, Charm (quantum number), 010306 general physics, Particle Physics - Phenomenology, Physics, Coupling, Large Hadron Collider, hep-ex, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Yukawa potential, hep-ph, High Energy Physics - Phenomenology, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

We propose a novel strategy to constrain the bottom and charm Yukawa couplings by exploiting LHC measurements of transverse momentum distributions in Higgs production. Our method does not rely on the reconstruction of exclusive final states or heavy-flavour tagging. Compared to other proposals it leads to an enhanced sensitivity to the Yukawa couplings due to distortions of the differential Higgs spectra from emissions which either probe quark loops or are associated to quark-initiated production. We derive constraints using data from LHC Run I, and we explore the prospects of our method at future LHC runs. Finally, we comment on the possibility of bounding the strange Yukawa coupling., Added analysis of the Higgs transverse momentum distribution. Version published in Physical Review Letters

Published
2017

26. Merging W W and W W + jet with M inlo

Author

Giulia Zanderighi, Emanuele Re, Pier Francesco Monni, Keith Hamilton, Tom Melia, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Hamilton, K, Melia, T, Monni, P, Re, E, and Zanderighi, G

Subjects
Nuclear and High Energy Physics, Particle physics, Scale (ratio), Monte Carlo method, FOS: Physical sciences, 01 natural sciences, Atomic, Mathematical Sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Particle and Plasma Physics, 0103 physical sciences, Nuclear, 010306 general physics, Mathematical Physics, Boson, Particle Physics - Phenomenology, Physics, Jet (fluid), Quantum Physics, 010308 nuclear & particles physics, Molecular, Nuclear & Particles Physics, High Energy Physics - Phenomenology, Jet, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Physical Sciences, NLO Computation, High Energy Physics::Experiment, Generator (mathematics)
Abstract

We present a simulation program for the production of a pair of W bosons in association with a jet, that can be used in conjunction with general-purpose shower Monte Carlo generators, according to the POWHEG method. We have further adapted and implemented the MINLO' method on top of the NLO calculation underlying our WW+jet generator. Thus, the resulting simulation achieves NLO accuracy not only for inclusive distributions in WW+jet production but also WW production, i.e. when the associated jet is not resolved, without the introduction of any unphysical merging scale. This work represents the first extension of the MINLO' method, in its original form, to the case of a genuine underlying 2->2 process, with non-trivial virtual corrections., 22 pages, 9 figures

Published
2016

27. Determining the structure of dark-matter couplings at the LHC

Author

Anthony Hibbs, Ulrich Haisch, Emanuele Re, Haisch, U, Hibbs, A, and Re, E

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Top quark, Dark Matter, LHC phenomenology, Physics beyond the Standard Model, Dark matter, Scalar field dark matter, FOS: Physical sciences, Standard Model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Pair production, Weakly interacting massive particles
Abstract

The latest LHC mono-jet searches place stringent bounds on the pp -> chibar chi cross section of dark matter. Further properties such as the dark matter mass or the precise structure of the interactions between dark matter and the standard model can however not be determined in this manner. We point out that measurements of the azimuthal angle correlations between the two jets in 2 j + chibar chi events may be used to disentangle whether dark matter pair production proceeds dominantly through tree or loop diagrams. Our general observation is illustrated by considering theories in which dark matter interacts predominantly with the top quark. We show explicitly that in this case the jet-jet azimuthal angle difference is a gold-plated observable to probe the Lorentz structure of the couplings of dark matter to top quarks, thus testing the CP nature of the particle mediating these interactions., 8 pages, 5 figures; v2: discussion of signal and background cross sections added, labelling of plots improved, typos fixed and references updated; matches version published in PRD

Published
2016

28. NNLOPS accurate associated HW production

Author

William Astill, Emanuele Re, Wojciech Bizon, Giulia Zanderighi, Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Astill, W, Bizon, W, Re, E, and Zanderighi, G

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, Kinematics, Jet (particle physics), QCD Phenomenology, 01 natural sciences, High Energy Physics - Experiment, Cross section (physics), High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, NLO Computation, Higgs boson, Production (computer science), High Energy Physics::Experiment, 010306 general physics, Parton shower, Parametrization, Particle Physics - Phenomenology
Abstract

We present a next-to-next-to-leading order accurate description of associated HW production consistently matched to a parton shower. The method is based on reweighting events obtained with the HW plus one jet NLO accurate calculation implemented in POWHEG, extended with the MiNLO procedure, to reproduce NNLO accurate Born distributions. Since the Born kinematics is more complex than the cases treated before, we use a parametrization of the Collins-Soper angles to reduce the number of variables required for the reweighting. We present phenomenological results at 13 TeV, with cuts suggested by the Higgs Cross Section Working Group., Comment: Minor changes, plots updated, matches the version published in JHEP

Published
2016

29. Beauty-quark and charm-quark pair production asymmetries at LHCb

Author

Emanuele Re, Rhorry Gauld, Ulrich Haisch, Ben D. Pecjak, Gauld, R, Haisch, U, Pecjak, B, and Re, E

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, FOS: Physical sciences, Order (ring theory), Bottom quark, High Energy Physics - Experiment, Standard Model, Charm quark, Nuclear physics, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Pair production, Invariant mass, Production (computer science), High Energy Physics::Experiment, b-quark, LHC phenomenology, LHCb, Particle Physics - Phenomenology
Abstract

The LHCb collaboration has recently performed a first measurement of the angular production asymmetry in the distribution of beauty quarks and anti-quarks at a hadron collider. We calculate the corresponding standard model prediction for this asymmetry at fixed-order in perturbation theory. Our results show good agreement with the data, which is provided differentially for three bins in the invariant mass of the $b \bar b$ system. We also present similar predictions for both beauty-quark and charm-quark final states within the LHCb acceptance for a collision energy of $\sqrt{s} = 13 \, {\rm TeV}$. We finally point out that a measurement of the ratio of the $b \bar b$ and $c \bar c$ cross sections may be useful for experimentally validating charm-tagging efficiencies., Comment: 4.5 pages + references, 1 figure, 4 tables

Published
2015

30. Top-pair production and decay at NLO matched with parton showers

Author

Emanuele Re, R. Keith Ellis, Paolo Nason, John M. Campbell, Campbell, J, Ellis, R, Nason, P, and Re, E

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, PP COLLISIONS, ROOT-S=7 TEV, Hadron, Monte Carlo method, FOS: Physical sciences, Monte Carlo Simulation, Parton, PRODUCTION CROSS-SECTION, Bottom quark, High Energy Physics - Experiment, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Pair production, NLO Computation, Radiative transfer, High Energy Physics::Experiment, Limit (mathematics), Generator (mathematics)
Abstract

We present a next-to-leading order (NLO) calculation of $t\bar{t}$ production in hadronic collisions interfaced to shower generators according to the POWHEG method. We start from an NLO result from previous work, obtained in the zero width limit, where radiative corrections to both production and decays are included. The POWHEG interface required an extension of the POWHEG BOX framework, in order to deal with radiation from the decay of resonances. This extension is fully general (i.e. it can be applied in principle to any process considered in the zero width limit), and is here applied for the first time. In order to perform a realistic simulation, we introduce finite width effects using different approximations, that we validated by comparing with published exact NLO results. We have interfaced our POWHEG code to the PYTHIA8 shower Monte Carlo generator. At this stage, we dealt with novel issues related to the treatment of resonances, especially with regard to the initial scale for the shower that needs to be set appropriately. This procedure affects, for example, the fragmentation function of the b quark, that we have studied with particular attention. We believe that the tool presented here improves over previous generators for all aspects that have to do with top decays, and especially for the study of issues related to top mass measurements that involve B hadrons or b jets. The work presented here also constitutes a first step towards a fully consistent matching of NLO calculations involving intermediate resonances decaying into coloured particles, with parton showers., Comment: Minor changes: improved few sentences, added 1 explanatory figure in sec. 1. Now it matches the version published in JHEP

Published
2015

31. Simplified dark matter top-quark interactions at the LHC

Author

Emanuele Re, Ulrich Haisch, Haisch, U, and Re, E

Subjects
Quark, Physics, Hadronic Collider, Particle physics, Top quark, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Dark matter, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics - Experiment, Standard Model, law.invention, Nuclear physics, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Recoil, High Energy Physics - Phenomenology (hep-ph), law, Effective field theory, Phenomenological Model, Collider, Particle Physics - Phenomenology
Abstract

Stringent limits on the interactions between dark matter (DM) and the standard model can be set by studying how initial-state or final-state particles recoil against missing transverse energy (MET). In this work, we improve, extend and correct LHC constraints on the interactions between DM and top quarks that are mediated by the exchange of spin-0 s-channel resonances. A comparison of the LHC run-1 sensitivity of the two main search channels is presented, which shows that mono-jet searches are typically more restrictive than the MET + tbar t searches. We furthermore explore the reach of the 14 TeV LHC. The collider constraints are compared to the restrictions arising from direct and indirect detection as well as the DM relic abundance, and we also reflect on effective field theory interpretations of the LHC exclusions., Comment: 29 pages, 11 figures; v4: conflict with CERN-PH-TH number fixed

Published
2015
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32. NNLOPS accurate Drell-Yan production

Author

Giulia Zanderighi, Alexander Karlberg, Emanuele Re, Karlberg, A, Re, E, and Zanderighi, G

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, Monte Carlo method, High Energy Physics::Phenomenology, Monte Carlo Simulation, Drell–Yan process, FOS: Physical sciences, Jet (particle physics), High Energy Physics - Experiment, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Pair production, High Energy Physics - Phenomenology (hep-ph), NLO Computation, Production (computer science), High Energy Physics::Experiment, Parton shower, Nuclear Experiment, Lepton, Particle Physics - Phenomenology
Abstract

We present a next-to-next-to-leading order accurate description of Drell-Yan lepton pair production processes through $\gamma^*/Z$ or $W$ exchange that includes consistently parton shower effects. Results are obtained by upgrading the vector-boson plus one jet NLO calculation in POWHEG with the MiNLO procedure and by applying an appropriate reweighting procedure making use of the DYNNLO program. We compare to existing data and to accurate resummed calculations., Comment: 31 pages, 17 figures, 1 table

Published
2014

33. Pinning down Higgs triplets at the LHC

Author

Christoph Englert, Michael Spannowsky, Emanuele Re, Englert, C, Re, E, and Spannowsky, M

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Higgs, LHC phenomenology, Missing energy, Large Hadron Collider, High Energy Physics::Phenomenology, Scalar (mathematics), FOS: Physical sciences, Supersymmetry, Parameter space, High Energy Physics - Experiment, Higgs sector, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Higgs boson, High Energy Physics::Experiment, Phenomenology (particle physics)
Abstract

Extensions of the Standard Model Higgs sector involving weak isotriplet scalars are not only benchmark candidates to reconcile observed anomalies of the recently discovered Higgs-like particle, but also exhibit a vast parameter space, for which the lightest Higgs' phenomenology turns out to be very similar to the Standard Model one. A generic prediction of this model class is the appearance of exotic doubly charged scalar particles. In this paper we adapt existing dilepton+missing energy+jets measurements in the context of SUSY searches to the dominant decay mode $H^{\pm\pm}\to W^\pm W^\pm$ and find that the LHC already starts probing the model's parameter space. A simple modification towards signatures typical of weak boson fusion searches allows us to formulate even tighter constraints with the 7 TeV LHC data set. A corresponding analysis of this channel performed at 14 TeV center of mass energy will constrain the model over the entire parameter space and facilitate potential $H^{\pm\pm}\to W^\pm W^\pm$ discoveries., Comment: typos fixed, references added, matches published version

Published
2013

34. NNLOPS simulation of Higgs boson production

Author

Emanuele Re, Giulia Zanderighi, Keith Hamilton, Paolo Nason, Hamilton, K, Nason, P, Re, E, and Zanderighi, G

Subjects
HADRONIC COLLISIONS, RESUMMATION, Particle physics, Nuclear and High Energy Physics, FOS: Physical sciences, Jet (particle physics), High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), MATRIX-ELEMENTS, High Energy Physics - Phenomenology (hep-ph), SHOWERS, DISTRIBUTIONS, Parton shower, Nuclear Experiment, Particle Physics - Phenomenology, Physics, High Energy Physics::Phenomenology, Monte Carlo Simulation, Gluon, High Energy Physics - Phenomenology, Strong coupling, Higgs boson, NLO Computation, Production (computer science), High Energy Physics::Experiment, LHC, TO-LEADING-ORDER
Abstract

We detail a simulation of Higgs boson production via gluon fusion, accurate at next-to-next-to-leading order in the strong coupling, including matching to a parton shower, yielding a fully exclusive, hadron-level description of the final-state. The approach relies on the POWHEG method for merging the NLO Higgs plus jet cross-section with the parton shower, and on the MINLO method to simultaneously achieve NLO accuracy for inclusive Higgs boson production. The NNLO accuracy is reached by a reweighting procedure making use of the HNNLO program., Comment: 25 pages, 10 figures. Very minor clarifications in the text for v2

Published
2013
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35. Probing higher-order corrections in dijet production at the LHC

Author

Emanuele Re, Jennifer M. Smillie, Carlo Oleari, Simone Alioli, Jeppe R. Andersen, Alioli, S, Andersen, J, Oleari, C, Re, E, and Smillie, J

Subjects
Physics, Higher-order correction, Nuclear and High Energy Physics, Dijet production, Large Hadron Collider, 010308 nuclear & particles physics, FOS: Physical sciences, Observable, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), medicine.anatomical_structure, Atlas (anatomy), Phase space, 0103 physical sciences, medicine, Order (group theory), Production (computer science), Resummation, 010306 general physics
Abstract

Both the ATLAS and CMS Collaborations have sought for effects beyond pure next-to-leading order in dijet observables, with the goal to distinguish between the perturbative descriptions provided by a next-to-leading order plus collinear-resummation calculation and by the resummation of wide-angle, hard emissions. In this paper we identify regions of phase space in dijet production where some observables receive large corrections beyond next-to-leading order and study their theoretical description with two tools that perform these two different resummations: the POWHEG BOX and HEJ. Furthermore, we suggest analyses where the predictions from POWHEG and HEJ can be clearly distinguished experimentally., Version accepted in PRD

Published
2012

36. Evasive Higgs Maneuvers at the LHC

Author

Englert, Christoph, Jaeckel, Joerg, Re, Emanuele, Spannowsky, Michael, Christoph, E, Joerg, J, Re, E, and Michael, S

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), Collider Physics, LHC, Higgs Physics, BSM, High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Computer Science::Databases, High Energy Physics - Experiment
Abstract

Non-standard decays of the Higgs boson produced at the Large Hadron Collider can lead to signatures which can easily be missed due to non-adapted trigger or search strategies. Keeping electroweak symmetry breaking Standard Model-like we classify the phenomenology of an evasive Higgs boson into three categories and discuss how they can be described in an effective field theory. We comment on how one can improve the search strategies to also detect such an evasive Higgs., Comment: 10 pages, 6 figures, references added, final version accepted for publication in PRD

Published
2011
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