Author: "M., Zamkovsky" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"M., Zamkovsky"' showing total 58 results

Start Over Author "M., Zamkovsky"

58 results on '"M., Zamkovsky"'

1. First search for K+ → π0πμe decays

Author: M.U. Ashraf, E. Cortina Gil, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V.W.S. Wong, D. Bryman, J. Fu, Z. Hives, T. Husek, J. Jerhot, K. Kampf, M. Kolesar, M. Zamkovsky, B. De Martino, M. Perrin-Terrin, B. Döbrich, S. Lezki, J. Schubert, A.T. Akmete, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, M. Soldani, H. Wahl, L. Bandiera, A. Cotta Ramusino, A. Gianoli, M. Romagnoni, A. Sytov, E. Iacopini, G. Latino, M. Lenti, P. Lo Chiatto, I. Panichi, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, M. D'Errico, D. Di Filippo, R. Fiorenza, M. Francesconi, R. Giordano, P. Massarotti, M. Mirra, M. Napolitano, I. Rosa, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, A. Briano Olvera, J. Engelfried, N. Estrada-Tristan, M.A. Reyes Santos, K.A. Rodriguez Rivera, P. Boboc, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, T. Velas, J. Bernhard, A. Ceccucci, M. Ceoletta, H. Danielsson, N. De Simone, F. Duval, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, K. Massri, M. Noy, V. Palladino, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, X. Chang, A. Kleimenova, R. Marchevski, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Kenworthy, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, J. Sanders, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, A. Baeva, D. Baigarashev, V. Bautin, D. Emelyanov, T. Enik, V. Falaleev, S. Fedotov, K. Gorshanov, E. Gushchin, V. Kekelidze, D. Kereibay, S. Kholodenko, A. Khotyantsev, A. Korotkova, Y. Kudenko, V. Kurochka, V. Kurshetsov, L. Litov, D. Madigozhin, M. Medvedeva, A. Mefodev, M. Misheva, N. Molokanova, S. Movchan, V. Obraztsov, A. Okhotnikov, A. Ostankov, I. Polenkevich, Yu. Potrebenikov, A. Sadovskiy, K. Salamatin, V. Semenov, S. Shkarovskiy, V. Sugonyaev, O. Yushchenko, and A. Zinchenko
Subjects: Physics, QC1-999
Abstract: The first search for the lepton number violating decay K+→π0π−μ+e+ and lepton flavour violating decays K+→π0π+μ−e+, K+→π0π+μ+e− has been performed using a dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 2.9×10−10, 3.1×10−10 and 5.0×10−10, respectively, are obtained at 90% CL for the branching ratios of the three decays on the assumption of uniform phase-space distributions.
Published: 2024
Full Text: View/download PDF

2. Improved calorimetric particle identification in NA62 using machine learning techniques

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, W. Fedorko, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, M. Yu, D. Bryman, J. Fu, Z. Hives, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, B. De Martino, M. Perrin-Terrin, A. T. Akmete, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, A. Mazzolari, I. Neri, A. Norton, F. Petrucci, M. Soldani, H. Wahl, L. Bandiera, A. Cotta Ramusino, A. Gianoli, M. Romagnoni, A. Sytov, E. Iacopini, G. Latino, M. Lenti, P. Lo Chiatto, I. Panichi, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, M. D’Errico, D. Di Filippo, R. Fiorenza, R. Giordano, P. Massarotti, M. Mirra, M. Napolitano, I. Rosa, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, A. Briano Olvera, J. Engelfried, N. Estrada-Tristan, M. A. Reyes Santos, P. Boboc, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, M. Ceoletta, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Kenworthy, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, J. Sanders, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, S. Fedotov, K. Gorshanov, E. Gushchin, V. Kekelidze, D. Kereibay, S. Kholodenko, A. Khotyantsev, A. Korotkova, Y. Kudenko, V. Kurochka, V. Kurshetsov, L. Litov, D. Madigozhin, M. Medvedeva, A. Mefodev, M. Misheva, N. Molokanova, S. Movchan, V. Obraztsov, A. Okhotnikov, A. Ostankov, I. Polenkevich, Yu. Potrebenikov, A. Sadovskiy, V. Semenov, S. Shkarovskiy, V. Sugonyaev, O. Yushchenko, and A. Zinchenko
Subjects: Fixed Target Experiments, Branching fraction, Rare Decay, Flavour Physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Measurement of the ultra-rare K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay at the NA62 experiment at CERN requires high-performance particle identification to distinguish muons from pions. Calorimetric identification currently in use, based on a boosted decision tree algorithm, achieves a muon misidentification probability of 1.2 × 10 −5 for a pion identification efficiency of 75% in the momentum range of 15–40 GeV/c. In this work, calorimetric identification performance is improved by developing an algorithm based on a convolutional neural network classifier augmented by a filter. Muon misidentification probability is reduced by a factor of six with respect to the current value for a fixed pion-identification efficiency of 75%. Alternatively, pion identification efficiency is improved from 72% to 91% for a fixed muon misidentification probability of 10 −5.
Published: 2023
Full Text: View/download PDF

3. A study of the K + → π 0 e + νγ decay

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, D. Bryman, J. Fu, Z. Hives, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, B. De Martino, M. Perrin-Terrin, A. T. Akmete, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, A. Mazzolari, I. Neri, A. Norton, F. Petrucci, M. Soldani, H. Wahl, L. Bandiera, A. Cotta Ramusino, A. Gianoli, M. Romagnoni, A. Sytov, E. Iacopini, G. Latino, M. Lenti, P. Lo Chiatto, I. Panichi, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, M. D’Errico, D. Di Filippo, R. Fiorenza, R. Giordano, P. Massarotti, M. Mirra, M. Napolitano, I. Rosa, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, A. Briano Olvera, J. Engelfried, N. Estrada-Tristan, M. A. Reyes Santos, P. Boboc, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, M. Ceoletta, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Kenworthy, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, J. Sanders, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, S. Fedotov, K. Gorshanov, E. Gushchin, V. Kekelidze, D. Kereibay, S. Kholodenko, A. Khotyantsev, A. Korotkova, Y. Kudenko, V. Kurochka, V. Kurshetsov, L. Litov, D. Madigozhin, M. Medvedeva, A. Mefodev, M. Misheva, N. Molokanova, S. Movchan, V. Obraztsov, A. Okhotnikov, A. Ostankov, I. Polenkevich, Yu. Potrebenikov, A. Sadovskiy, V. Semenov, S. Shkarovskiy, V. Sugonyaev, O. Yushchenko, and A. Zinchenko
Subjects: Branching fraction, Electroweak Interaction, Fixed Target Experiments, Flavour Physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract A sample of 1.3 × 105 K + → π 0 e + νγ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017–2018. Branching fraction measurements are obtained at percent relative precision in three restricted kinematic regions, improving on existing results by a factor larger than two. An asymmetry, possibly related to T-violation, is investigated with no evidence observed within the achieved precision.
Published: 2023
Full Text: View/download PDF

4. Search for dark photon decays to μ + μ − at NA62

Author: The NA62 collaboration, E. Cortina Gil, J. Jerhot, A. Kleimenova, N. Lurkin, M. Zamkovsky, T. Numao, B. Velghe, V. W. S. Wong, D. Bryman, Z. Hives, T. Husek, K. Kampf, M. Koval, B. De Martino, M. Perrin-Terrin, A. T. Akmete, R. Aliberti, L. Di Lella, N. Doble, L. Peruzzo, S. Schuchmann, H. Wahl, R. Wanke, P. Dalpiaz, A. Mazzolari, I. Neri, F. Petrucci, M. Soldani, L. Bandiera, A. Cotta Ramusino, A. Gianoli, M. Romagnoni, A. Sytov, M. Lenti, P. Lo Chiatto, R. Marchevski, I. Panichi, G. Ruggiero, A. Bizzeti, F. Bucci, A. Antonelli, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, M. D’Errico, R. Fiorenza, R. Giordano, P. Massarotti, M. Mirra, M. Napolitano, I. Rosa, G. Saracino, G. Anzivino, F. Brizioli, P. Cenci, V. Duk, R. Lollini, P. Lubrano, M. Pepe, M. Piccini, F. Costantini, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, J. Pinzino, M. Sozzi, R. Fantechi, F. Spinella, I. Mannelli, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, A. Lonardo, M. Turisini, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, E. Menichetti, E. Migliore, C. Biino, A. Filippi, F. Marchetto, D. Soldi, A. Briano Olvera, J. Engelfried, N. Estrada-Tristan, R. Piandani, M. A. Reyes Santos, P. Boboc, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, T. Blazek, V. Cerny, Z. Kucerova, R. Volpe, J. Bernhard, L. Bician, M. Boretto, A. Ceccucci, M. Ceoletta, M. Corvino, H. Danielsson, F. Duval, B. Döbrich, L. Federici, E. Gamberini, R. Guida, E. B. Holzer, B. Jenninger, G. Lehmann Miotto, P. Lichard, K. Massri, E. Minucci, M. Noy, V. Ryjov, J. Swallow, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, C. Kenworthy, C. Lazzeroni, C. Parkinson, A. Romano, J. Sanders, A. Sergi, A. Shaikhiev, A. Tomczak, H. Heath, D. Britton, A. Norton, D. Protopopescu, J. B. Dainton, L. Gatignon, R. W. L. Jones, P. Cooper, D. Coward, P. Rubin, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, S. Fedotov, K. Gorshanov, E. Gushchin, V. Kekelidze, D. Kereibay, S. Kholodenko, A. Khotyantsev, A. Korotkova, Y. Kudenko, V. Kurochka, V. Kurshetsov, L. Litov, D. Madigozhin, A. Mefodev, M. Misheva, N. Molokanova, V. Obraztsov, A. Okhotnikov, I. Polenkevich, Yu. Potrebenikov, A. Sadovskiy, S. Shkarovskiy, V. Sugonyaev, and O. Yushchenko
Subjects: Beyond Standard Model, Exotics, Fixed Target Experiments, Dark Matter, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The NA62 experiment at CERN, designed to study the ultra-rare decay K + → π + ν ν ¯ $$ \nu \overline{\nu} $$ , has also collected data in beam-dump mode. In this configuration, dark photons may be produced by protons dumped on an absorber and reach a decay volume beginning 80 m downstream. A search for dark photons decaying in flight to μ + μ − pairs is reported, based on a sample of 1.4 × 1017 protons on dump collected in 2021. No evidence for a dark photon signal is observed. A region of the parameter space is excluded at 90% CL, improving on previous experimental limits for dark photon masses between 215 and 550 MeV/c 2.
Published: 2023
Full Text: View/download PDF

5. Measurement of the K+ → π+γγ decay

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V.W.S. Wong, D. Bryman, J. Fu, Z. Hives, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, B. De Martino, M. Perrin-Terrin, B. Döbrich, S. Lezki, A.T. Akmete, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, A. Mazzolari, I. Neri, A. Norton, F. Petrucci, M. Soldani, H. Wahl, L. Bandiera, A. Cotta Ramusino, A. Gianoli, M. Romagnoni, A. Sytov, E. Iacopini, G. Latino, M. Lenti, P. Lo Chiatto, I. Panichi, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, M. D'Errico, D. Di Filippo, R. Fiorenza, R. Giordano, P. Massarotti, M. Mirra, M. Napolitano, I. Rosa, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, A. Briano Olvera, J. Engelfried, N. Estrada-Tristan, M.A. Reyes Santos, K.A. Rodriguez Rivera, P. Boboc, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, M. Ceoletta, H. Danielsson, N. De Simone, F. Duval, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Kenworthy, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, J. Sanders, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, S. Fedotov, K. Gorshanov, E. Gushchin, V. Kekelidze, D. Kereibay, S. Kholodenko, A. Khotyantsev, A. Korotkova, Y. Kudenko, V. Kurochka, V. Kurshetsov, L. Litov, D. Madigozhin, M. Medvedeva, A. Mefodev, M. Misheva, N. Molokanova, S. Movchan, V. Obraztsov, A. Okhotnikov, A. Ostankov, I. Polenkevich, Yu. Potrebenikov, A. Sadovskiy, V. Semenov, S. Shkarovskiy, V. Sugonyaev, O. Yushchenko, and A. Zinchenko
Subjects: Physics, QC1-999
Abstract: A sample of 3984 candidates of the K+→π+γγ decay, with an estimated background of 291±14 events, was collected by the NA62 experiment at CERN during 2017–2018. In order to describe the observed di-photon mass spectrum, the next-to-leading order contribution in chiral perturbation theory was found to be necessary. The decay branching ratio in the full kinematic range is measured to be (9.61±0.17)×10−7. The first search for production and prompt decay of an axion-like particle with gluon coupling in the process K+→π+a, a→γγ is also reported.
Published: 2024
Full Text: View/download PDF

6. Addendum to: A measurement of the K + → π + μ + μ − decay

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Published: 2023
Full Text: View/download PDF

7. Search for K+ decays into the π+e+e−e+e− final state

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V.W.S. Wong, D. Bryman, J. Fu, Z. Hives, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, B. De Martino, M. Perrin-Terrin, A.T. Akmete, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, A. Mazzolari, I. Neri, A. Norton, F. Petrucci, M. Soldani, H. Wahl, L. Bandiera, A. Cotta Ramusino, A. Gianoli, M. Romagnoni, A. Sytov, E. Iacopini, G. Latino, M. Lenti, P. Lo Chiatto, I. Panichi, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, M. D'Errico, D. Di Filippo, R. Fiorenza, R. Giordano, P. Massarotti, M. Mirra, M. Napolitano, I. Rosa, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, A. Briano Olvera, J. Engelfried, N. Estrada-Tristan, M.A. Reyes Santos, P. Boboc, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, M. Ceoletta, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Kenworthy, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, J. Sanders, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, S. Fedotov, K. Gorshanov, E. Gushchin, V. Kekelidze, D. Kereibay, S. Kholodenko, A. Khotyantsev, A. Korotkova, Y. Kudenko, V. Kurochka, V. Kurshetsov, L. Litov, D. Madigozhin, M. Medvedeva, A. Mefodev, M. Misheva, N. Molokanova, S. Movchan, V. Obraztsov, A. Okhotnikov, A. Ostankov, I. Polenkevich, Yu. Potrebenikov, A. Sadovskiy, V. Semenov, S. Shkarovskiy, V. Sugonyaev, O. Yushchenko, and A. Zinchenko
Subjects: Physics, QC1-999
Abstract: The first search for ultra-rare K+ decays into the π+e+e−e+e− final state is reported, using a dataset collected by the NA62 experiment at CERN in 2017–2018. An upper limit of 1.4×10−8 at 90% CL is obtained for the branching ratio of the K+→π+e+e−e+e− decay, predicted in the Standard Model to be (7.2±0.7)×10−11. Upper limits at 90% CL are obtained at the level of 10−9 for the branching ratios of two prompt decay chains involving pair-production of hidden-sector mediators: K+→π+aa, a→e+e− and K+→π+S, S→A′A′, A′→e+e−.
Published: 2023
Full Text: View/download PDF

8. Performance of the NA62 trigger system

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Fixed Target Experiments, Flavour Physics, Flavour Changing Neutral Currents, Rare Decay, Trigger, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The NA62 experiment at CERN targets the measurement of the ultra-rare K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay, and carries out a broad physics programme that includes probes for symmetry violations and searches for exotic particles. Data were collected in 2016–2018 using a multi-level trigger system, which is described highlighting performance studies based on 2018 data.
Published: 2023
Full Text: View/download PDF

9. A measurement of the K + → π + μ + μ − decay

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Branching fraction, Fixed Target Experiments, Flavour Changing Neutral Currents, Rare Decay, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract A sample of 2.8 × 104 K + → π + μ + μ − candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017–2018. The model-independent branching fraction is measured to be (9.15 ± 0.08) × 10 −8, a factor three more precise than previous measurements. The decay form factor is presented as a function of the squared dimuon mass. A measurement of the form factor parameters and their uncertainties is performed using a description based on Chiral Perturbation Theory at O $$ \mathcal{O} $$ (p 6).
Published: 2022
Full Text: View/download PDF

10. A search for the K+ → μ−νe+e+ decay

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V.W.S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Kaon decays, Lepton number violation, Lepton flavour violation, Physics, QC1-999
Abstract: A search for the K+→μ−νe+e+ decay, forbidden within the Standard Model by either lepton number or lepton flavour conservation depending on the flavour of the emitted neutrino, has been performed using the dataset collected by the NA62 experiment at CERN in 2016–2018. An upper limit of 8.1×10−11 is obtained for the decay branching fraction at 90% CL, improving by a factor of 250 over the previous search.
Published: 2023
Full Text: View/download PDF

11. Searches for lepton number violating K+ → π−(π0)e+e+ decays

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V.W.S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Physics, QC1-999
Abstract: Searches for lepton number violating K+→π−e+e+ and K+→π−π0e+e+ decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 2016–2018. Upper limits of 5.3×10−11 and 8.5×10−10 are obtained on the decay branching fractions at 90% confidence level. The former result improves by a factor of four over the previous best limit, while the latter result represents the first limit on the K+→π−π0e+e+ decay rate.
Published: 2022
Full Text: View/download PDF

12. Measurement of the very rare K + → π + ν ν ¯ $$ {\pi}^{+}\nu \overline{\nu} $$ decay

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: FCNC Interaction, Flavour Changing Neutral Currents, Rare decay, Fixed target experiments, Flavor physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The NA62 experiment reports the branching ratio measurement BR K + → π + ν ν ¯ = 10.6 − 3.4 + 4.0 stat ± 0.9 syst × 10 − 11 $$ \mathrm{BR}\left({K}^{+}\to {\pi}^{+}\nu \overline{\nu}\right)=\left({10.6}_{-3.4}^{+4.0}\left|{}_{\mathrm{stat}}\right.\pm {0.9}_{\mathrm{syst}}\right)\times {10}^{-11} $$ at 68% CL, based on the observation of 20 signal candidates with an expected background of 7.0 events from the total data sample collected at the CERN SPS during 2016–2018. This provides evidence for the very rare K + → π + ν ν ¯ $$ {\pi}^{+}\nu \overline{\nu} $$ decay, observed with a significance of 3.4σ. The experiment achieves a single event sensitivity of (0.839 ± 0.054) × 10 −11, corresponding to 10.0 events assuming the Standard Model branching ratio of (8.4 ± 1.0) × 10 −11. This measurement is also used to set limits on BR(K + → π + X), where X is a scalar or pseudo-scalar particle. Details are given of the analysis of the 2018 data sample, which corresponds to about 80% of the total data sample.
Published: 2021
Full Text: View/download PDF

13. Search for a feebly interacting particle X in the decay K + → π + X

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, R. Marchevski, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Beyond Standard Model, Exotics, Fixed target experiments, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract A search for the K + → π + X decay, where X is a long-lived feebly interacting particle, is performed through an interpretation of the K + → π + ν ν ¯ $$ {\pi}^{+}\nu \overline{\nu} $$ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of X masses, 0–110 MeV/c 2 and 154–260 MeV/c 2, and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR(K + → π + X), are competitive with previously reported searches in the first mass range, and improve on current limits in the second mass range by more than an order of magnitude.
Published: 2021
Full Text: View/download PDF

14. An investigation of the very rare K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ decay

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, R. Marchevski, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Fixed target experiments, Flavor physics, Flavour Changing Neutral Currents, Rare decay, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The NA62 experiment reports an investigation of the K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ mode from a sample of K + decays collected in 2017 at the CERN SPS. The experiment has achieved a single event sensitivity of (0.389 ± 0.024) × 10 −10, corresponding to 2.2 events assuming the Standard Model branching ratio of (8.4 ± 1.0) × 10 −11. Two signal candidates are observed with an expected background of 1.5 events. Combined with the result of a similar analysis conducted by NA62 on a smaller data set recorded in 2016, the collaboration now reports an upper limit of 1.78 × 10 −10 for the K + → π + ν ν ¯ $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ branching ratio at 90% CL. This, together with the corresponding 68% CL measurement of ( 0.48 − 0.48 + 0.72 $$ {0.48}_{-0.48}^{+0.72} $$ ) × 10 −10, are currently the most precise results worldwide, and are able to constrain some New Physics models that predict large enhancements still allowed by previous measurements.
Published: 2020
Full Text: View/download PDF

15. Search for production of an invisible dark photon in π 0 decays

Author: The NA62 collaboration, E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, G. Georgiev, V. Kozhuharov, L. Litov, T. Numao, Y. Petrov, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Lanfranchi, G. Mannocchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D’Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Beyond Standard Model, Exotics, Fixed target experiments, Rare decay, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The results of a search for π 0 decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of 4.12 × 108 tagged π 0 mesons, no signal is observed. Assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a function of the dark photon mass, improving on previous searches in the mass range 60–110 MeV/c 2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay π 0 → γ ν ν ¯ $$ {\pi}^0\to \gamma \nu \overline{\nu} $$ , improving the current limit by more than three orders of magnitude.
Published: 2019
Full Text: View/download PDF

16. First search for K+→π+νν¯ using the decay-in-flight technique

Author: E. Cortina Gil, E. Minucci, S. Padolski, P. Petrov, B. Velghe, G. Georgiev, V. Kozhuharov, L. Litov, T. Numao, D. Bryman, J. Fu, T. Husek, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, R. Marchevski, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, E. Gamberini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Bizzeti, F. Bucci, R. Volpe, A. Antonelli, G. Lamanna, G. Lanfranchi, G. Mannocchi, S. Martellotti, M. Moulson, M. Raggi, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, V. Duk, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, R. Piandani, J. Pinzino, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, L. Federici, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, A. Kleimenova, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, A. Shaikhiev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, M. Koval, Z. Kucerova, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Gatignon, R. Guida, F. Hahn, B. Jenninger, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, V. Ryjov, S. Venditti, M.B. Brunetti, V. Fascianelli, F. Gonnella, E. Goudzovski, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J.B. Dainton, J.R. Fry, L. Fulton, D. Hutchcroft, E. Maurice, G. Ruggiero, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Physics, QC1-999
Abstract: The NA62 experiment at the CERN SPS reports the first search for K+→π+νν¯ using the decay-in-flight technique, based on a sample of 1.21×1011 K+ decays collected in 2016. The single event sensitivity is 3.15×10−10, corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14×10−10 on the K+→π+νν¯ branching ratio at 95% CL.
Published: 2019
Full Text: View/download PDF

17. Search for K+ decays to a muon and invisible particles

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Physics, QC1-999
Abstract: The NA62 experiment at CERN reports searches for K+→μ+N and K+→μ+νX decays, where N and X are massive invisible particles, using the 2016–2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed as upper limits of O(10−8) of the neutrino mixing parameter |Uμ4|2 for N masses in the range 200–384 MeV/c2 and lifetime exceeding 50 ns. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10–370 MeV/c2 are reported for the first time, ranging from O(10−5) to O(10−7). An improved upper limit of 1.0×10−6 is established at 90% CL on the K+→μ+ννν¯ branching fraction.
Published: 2021
Full Text: View/download PDF

18. Search for heavy neutral lepton production in K+ decays to positrons

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Physics, QC1-999
Abstract: A search for heavy neutral lepton (N) production in K+→e+N decays using the data sample collected by the NA62 experiment at CERN in 2017–2018 is reported. Upper limits of the extended neutrino mixing matrix element |Ue4|2 are established at the level of 10−9 over most of the accessible heavy neutral lepton mass range 144–462 MeV/c2, with the assumption that the lifetime exceeds 50 ns. These limits improve significantly upon those of previous production and decay searches. The |Ue4|2 range favoured by Big Bang Nucleosynthesis is excluded up to a mass of about 340 MeV/c2.
Published: 2020
Full Text: View/download PDF

19. Searches for lepton number violating K+ decays

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, G. Mannocchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A.M. Bragadireanu, S.A. Ghinescu, O.E. Hutanu, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. Döbrich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E.B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M.B. Brunetti, V. Duk, V. Fascianelli, J.R. Fry, F. Gonnella, E. Goudzovski, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J.B. Dainton, R.W.L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, and P. Rubin
Subjects: Physics, QC1-999
Abstract: The NA62 experiment at CERN reports a search for the lepton number violating decays K+→π−e+e+ and K+→π−μ+μ+ using a data sample collected in 2017. No signals are observed, and upper limits on the branching fractions of these decays of 2.2×10−10 and 4.2×10−11 are obtained, respectively, at 90% confidence level. These upper limits improve on previously reported measurements by factors of 3 and 2, respectively.
Published: 2019
Full Text: View/download PDF

20. A search for the K+ -> mu- nu e+ e+ decay

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, V. W. S. Wong, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, G. Tinti, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, R. Fiorenza, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D'Agostini, M. Raggi, A. Biagioni, P. Cretaro, O. Frezza, E. Leonardi, A. Lonardo, M. Turisini, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. D??brich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, A. Tomczak, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Wong, V. W. S., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Tinti, G., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Fiorenza, R., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D'Agostini, G., Raggi, M., Biagioni, A., Cretaro, P., Frezza, O., Leonardi, E., Lonardo, A., Turisini, M., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., D??brich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Tomczak, A., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.
Published: 2023

21. Measurement of the very rare K+→π+νν ̄decay at the NA62 experiment at CERN

Author: Renato Fiorenza, A. Akmete, R. Aliberti, F. Ambrosino, R. Ammendola, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, T. Bache, A. Baeva, D. Baigarashev, L. Bandiera, M. Barbanera, J. Bernhard, A. Biagioni, L. Bician, C. Biino, A. Bizzeti, T. Blazek, B. Bloch-Devaux, P. Boboc, V. Bonaiuto, M. Boretto, M. Bragadireanu, A. Briano Olvera, D. Britton, F. Brizioli, M.B. Brunetti, D. Bryman, F. Bucci, T. Capussela, J. Carmignani, A. Ceccucci, P. Cenci, V. Cerny, C. Cerri, B. Checcucci, A. Conovaloff, P. Cooper, E. Cortina Gil, M. Corvino, F. Costantini, A. Cotta Ramusino, D. Coward, P. Cretaro, G. D’Agostini, J. Dainton, P. Dalpiaz, H. Danielsson, M. D’Errico, N. De Simone, D. Di Filippo, L. Di Lella, N. Doble, B. Dobrich, F. Duval, V. Duk, D. Emelyanov, J. Engelfried, T. Enik, N. Estrada-Tristan, V. Falaleev, R. Fantechi, V. Fascianelli, L. Federici, S. Fedotov, A. Filippi, R. Fiorenza, M. Fiorini, O. Frezza, J. Fry, J. Fu, A. Fucci, L. Fulton, E. Gamberini, L. Gatignon, G. Georgiev, S. Ghinescu, A. Gianoli, M. Giorgi, S. Giudici, F. Gonnella, K. Gorshanov, E. Goudzovski, C. Graham, R. Guida, Evgeny Gushchin, F. Hahn, H. Heath, J. Henshaw, Z. Hives, E.B. Holzer, Tomas Husek, O. Hutanu, D. Hutchcroft, L. Iacobuzio, E. Iacopini, E. Imbergamo, B. Jenninger, J. Jerhot, R.W. Jones, K. Kampf, V. Kekelidze, D. Kerebay, S. Kholodenko, G. Khoriauli, A. Kleimenova, A. Korotkova, A. Khotyantsev, M. Koval, V. Kozhuharov, Z. Kucerova, Y. G. Kudenko, J. Kunze, V. Kurochka, V. Kurshetsov, G. Lanfranchi, G. Lamanna, E. Lari, G. Latino, P. Laycock, C. Lazzeroni, M. Lenti, G. Lehmann Miotto, E. Leonardi, P. Lichard, L. Litov, P. Lo Chiatto, R. Lollini, D. Lomidze, A. Lonardo, P. Lubrano, M. Lupi, N. Lurkin, D. Madigozhin, I. Mannelli, A. Mapelli, F. Marchetto, R. Marchevski, S. Martellotti, P. Massarotti, K. Massri, E. Maurice, A. Mazzolari, M. Medvedeva, A. Mefodev, E. Menichetti, E. Migliore, E. Minucci, M. Mirra, M. Misheva, N. Molokanova, M. Moulson, S. Movchan, M. Napolitano, I. Neri, F. Newson, A. Norton, M. Noy, T. Numao, V. Obraztsov, A. Okhotnikov, A. Ostankov, S. Padolski, R. D. page, V. Palladino, I. Panichi, A. Parenti, C. Parkinson, E. Pedreschi, M. Pepe, M. Perrin-Terrin, L. Peruzzo, P. Petrov, Y. Petrov, F. Petrucci, R. Piandani, M. Piccini, J. Pinzino, I. Polenkevich, L. Pontisso, Yu. Potrebenikov, D. Protopopescu, M. Raggi, Marco Antonio Reyes Santos, M. Romagnoni, A. Romano, P. Rubin, G. Ruggiero, V. Ryjov, A. Sadovsky, A. Salamon, C. Santoni, G. Saracino, F. Sargeni, S. Schuchmann, V. Semenov, A. Sergi, A. Shaikhiev, S. Shkarovskiy, M. Soldani, D. Soldi, M. Sozzi, T. Spadaro, F. Spinella, A. Sturgess, V. Sugonyaev, J. Swallow, A. Sytov, G. Tinti, A. Tomczak, S. Trilov, M. Turisini, P. Valente, B. Velghe, S. Venditti, P. Vicini, R. Volpe, M. Vormstein, H. Wahl, R. Wanke, V. Wong, B. Wrona, O. Yushchenko, M. Zamkovsky, and A. Zinchenko
Subjects: Settore FIS/04
Published: 2022

22. Search for Lepton Number and Flavor Violation in K+ and π0 Decays

Author: L. Bician, J. Swallow, L. Di Lella, M. Misheva, H. O. Danielsson, G. Lehmann Miotto, Alessandro Lonardo, D. Soldi, D. Protopopescu, S. Martellotti, Luca Pontisso, Nicolas Lurkin, C. Graham, M. B. Brunetti, Claudio Santoni, V. Falaleev, A. Conovaloff, L. Federici, M. Vormstein, Babette Döbrich, A. M. Bragadireanu, K. Massri, B. Angelucci, A. Filippi, A. I. Zinchenko, L. Iacobuzio, E. B. Holzer, A. Salamon, G. Khoriauli, B. Wrona, C. J. Parkinson, F. Brizioli, Cristina Biino, E. Imbergamo, M. Moulson, S. Movchan, C. Lazzeroni, F. Ambrosino, T. Capussela, A. Gianoli, Y. Petrov, L. Fulton, D. Baigarashev, R. Fantechi, Rainer Wanke, C. Cerri, Mauro Piccini, Georgi P. Georgiev, Roberto Guida, Viacheslav Duk, Paul Laycock, E. Minucci, F. Duval, P. Rubin, Roberto Ammendola, Karol Kampf, S. Trilov, P. Lubrano, M. Sozzi, Paolo Massarotti, T. Numao, Fabrizio Petrucci, Emilio Leonardi, A. Baeva, Paolo Valente, Tomáš Husek, J. L. Fu, Leander Litov, I. Polenkevich, R. Page, V. Fascianelli, M. Perrin-Terrin, V. Palladino, P. F. Dalpiaz, Ilaria Neri, Vincenzo Bonaiuto, A. Fucci, N. Doble, F. Hahn, T. Enik, Douglas Bryman, Sergei Fedotov, N. De Simone, R. Marchevski, E. Gamberini, E. Lari, Mauro Raggi, D. T. Madigozhin, Antonino Sergi, Yu. Potrebenikov, M. Koval, G. Lamanna, Vladimir Ryjov, Giuseppe Latino, D. Coward, G. Saracino, L. Gatignon, A. Korotkova, M. Medvedeva, Giuseppe Ruggiero, M. Corvino, P. Petrov, Dave Britton, N. Estrada-Tristan, A. Mapelli, Evgueni Goudzovski, Yu.A. Kudenko, Jürgen Engelfried, S. Giudici, F. Bucci, G. D'Agostini, Vladimir Kekelidze, E. Iacopini, Matteo Lupi, D. Emelyanov, A. Sturgess, J. B. Dainton, S. Venditti, E. Menichetti, M. Pepe, A. Khotyantsev, F. Costantini, A. Ceccucci, B. Checcucci, R. W. L. Jones, G. Anzivino, Andrea Biagioni, R. Volpe, B. Jenninger, N. A. Molokanova, Andrea Bizzeti, O. Hutanu, Mattia Barbanera, M. Fiorini, M. Napolitano, S. Ghinescu, J. Henshaw, A. Shaikhiev, Francesco Gonnella, A. Antonelli, E. Maurice, Mario Giorgi, Jacopo Pinzino, V. Kurochka, Tomas Blazek, V. Kozhuharov, L. Peruzzo, M. Zamkovsky, D. Di Filippo, A. Cotta Ramusino, B. Bloch-Devaux, J. Jerhot, F. Newson, Roberta Arcidiacono, V. Cerny, S. Shkarovskiy, F. Marchetto, V. Obraztsov, Piero Vicini, S. Schuchmann, Helen F Heath, V. E. Semenov, E. Gushchin, P. Lichard, Z. Kucerova, H. D. Wahl, E. Pedreschi, A. Romano, Fausto Sargeni, M. Mirra, A P Ostankov, Matthew Noy, M. Boretto, E. Cortina Gil, Roberto Piandani, P. Cenci, Johannes Bernhard, J. Kunze, G. Lanfranchi, A. Parenti, F. Spinella, R. Lollini, B. Velghe, J. Carmignani, Ernesto Migliore, M. Lenti, S. Padolski, J. R. Fry, V. Sugonyaev, T. Bache, R. Aliberti, A. Norton, D. Lomidze, D. E. Hutchcroft, O. Yushchenko, V. Kurshetsov, S. Kholodenko, Tommaso Spadaro, P. Cooper, A. Mefodev, I. Mannelli, and A. Kleimenova
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Flavour, General Physics and Astronomy, 01 natural sciences, Lepton number, 0103 physical sciences, Pi, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: Searches for the lepton number violating $K^{+} \rightarrow \pi^{-} \mu^{+} e^{+}$ decay and the lepton flavour violating $K^{+} \rightarrow \pi^{+} \mu^{-} e^{+}$ and $\pi^{0} \rightarrow \mu^{-} e^{+}$ decays are reported using data collected by the NA62 experiment at CERN in $2017$-$2018$. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: $\mathcal{B}(K^{+}\rightarrow\pi^{-}\mu^{+}e^{+})
Published: 2021
Full Text: View/download PDF

23. First search for K+→π+νν¯ using the decay-in-flight technique

Author: Semenov, A. M. Bragadireanu, E. Cortina Gil, G. Saracino, G. Ruggiero, G. Anzivino, Roberto Piandani, L. Peruzzo, R Laycock, M. Moulson, Mauro Piccini, G. Lehmann Miotto, C. Graham, B. Bloch-Devaux, S. Movchan, C. Lazzeroni, F. Ambrosino, M. Sozzi, M. Lenti, N. Doble, Karol Kampf, A. Salamon, G. Khoriauli, D. E. Hutchcroft, S. Padolski, O. Yushchenko, Kozhuharov, F. Brizioli, K. Massri, L. Bician, R. Fantechi, Fabrizio Petrucci, M. Boretto, Luca Federici, Ilaria Neri, J. Swallow, Yu. Potrebenikov, Leander Litov, A. Kleimenova, T. Enik, Douglas Bryman, Fry, Sergei Fedotov, Obraztsov, A. Romano, Fausto Sargeni, Jürgen Engelfried, Giuseppe Latino, H. O. Danielsson, R Massarotti, Z. Kucerova, S. Kholodenko, A. Mapelli, M. Vormstein, P. Cenci, D. Soldi, Luca Pontisso, S. Giudici, A P Ostankov, A. Mefodev, Palladino, Bonaiuto, J. L. Fu, B. Angelucci, R Valente, Kurshetsov, J. Kunze, A. Sturgess, A. Conovaloff, R Dalpiaz, R. Volpe, F. Spinella, Claudio Santoni, Sugonyaev, Kurochka, R. Lollini, I. Mannelli, R Rubin, T. Spadaro, Ernesto Migliore, Alessandro Lonardo, L. Fulton, F. Duval, David Lomidze, N. A. Molokanova, Cerny, C. Cerri, T. Capussela, S. Trilov, G. Lanfranchi, Andrea Biagioni, M. Fiorini, Mauro Raggi, Roberta Arcidiacono, M. Napolitano, A. Gianoli, Georgi P. Georgiev, D. Protopopescu, M. Koval, T. Numao, E. Gushchin, Emilie Maurice, S. Venditti, G. Lamanna, Yu. G. Kudenko, J. Pinzino, Christopher John Parkinson, Cristina Biino, Nicolas Lurkin, Fascianelli, Tomáš Husek, Dave Britton, N. Estrada-Tristan, A. Shaikhiev, B Doebrich, F. Bucci, Milena Misheva, M. B. Brunetti, Roberto Ammendola, G. D'Agostini, E. Minucci, D. T. Madigozhin, M. Pepe, Duk, L. Di Lella, R. Aliberti, E. Pedreschi, A. Norton, A. Antonelli, O. Hutanu, A. Korotkova, E. Iacopini, Matteo Lupi, M. Mirra, A.I. Zinchenko, M. Zamkovsky, R. Page, A. Filippi, B. Wrona, A. Khotyantsev, F. Marchetto, M. Perrin-Terrin, S. Ghinescu, A. Ceccucci, Piero Vicini, R Lichard, A. Fucci, Helen F Heath, B. Checcucci, R. Marchevski, Antonino Sergi, Andrea Bizzeti, R Cooper, L. Gatignon, M. Corvino, D. Coward, E. Imbergamo, R. Guida, Rainer Wanke, Francesco Gonnella, Tomas Blazek, R Lubrano, A. Cotta Ramusino, S. Martellotti, M. Noy, Mattia Barbanera, N. De Simone, F. Newson, S. Shkarovskiy, H. D. Wahl, J. B. Dainton, Ryjov, M. Medvedeva, P. Petrov, Evgueni Goudzovski, B. Velghe, F. Costantini, B. Jenninger, E. Menichetti, Mario Giorgi, D. Di Filippo, L. Iacobuzio, Emilio Leonardi, I. Polenkevich, Falaleev, G. Mannocchi, E. Gamberini, F. Hahn, and Kekelidze
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, European research, Library science, 01 natural sciences, Bildung, Research council, Basic research, 0103 physical sciences, Russian federation, Christian ministry, 010306 general physics, Research center
Abstract: The cost of the experiment and of its auxiliary systems were supported by the funding agencies of the Collaboration Institutes. We are particularly indebted to: F.R.S.-FNRS (Fonds de la Recherche Scientifique - FNRS), Belgium; BMES (Ministry of Education, Youth and Science), Bulgaria; NSERC (Natural Sciences and Engineering Research Council), Canada; NRC (National Research Council) contribution to TRIUMF, Canada; MEYS (Ministry of Education, Youth and Sports), Czech Republic; BMBF (Bundesministerium fur Bildung und Forschung) contracts 05H12UM5 and 05H15UMCNA, Germany; INFN (Istituto Nazionale di Fisica Nucleare), Italy; MIUR (Ministero dell'Istruzione, dell'Universita e della Ricerca), Italy; CONACyT (Consejo Nacional de Ciencia y Tecnologia), Mexico; IFA (Institute of Atomic Physics), Romania; INR-RAS (Institute for Nuclear Research of the Russian Academy of Sciences), Moscow, Russia; JINR (Joint Institute for Nuclear Research), Dubna, Russia; NRC (National Research Center) “Kurchatov Institute” and MESRF (Ministry of Education and Science of the Russian Federation), Russia; MESRS (Ministry of Education, Science, Research and Sport), Slovakia; CERN (European Organization for Nuclear Research), Switzerland; STFC (Science and Technology Facilities Council), United Kingdom; NSF (National Science Foundation) Award Number 1506088, U.S.A.; ERC (European Research Council) “UniversaLepto” advanced grant 268062, “KaonLepton” starting grant 336581, Europe. Individuals have received support from: Charles University (project GA UK number 404716), Czech Republic; Ministry of Education, Universities and Research (MIUR “Futuro in ricerca 2012” grant RBFR12JF2Z, Project GAP), Italy; Russian Foundation for Basic Research (RFBR grants 18-32-00072, 18-32-00245), Russia; the Royal Society (grants UF100308, UF0758946), United Kingdom; STFC (Rutherford fellowships ST/J00412X/1, ST/M005798/1), United Kingdom; ERC (grants 268062, 336581).
Published: 2019
Full Text: View/download PDF

24. Search for a feebly interacting particle X in the decay K+ → π+X

Author: L. Peruzzo, B. Bloch-Devaux, E. Imbergamo, V. Cerny, R. Fantechi, L. Di Lella, D. Emelyanov, Z. Kucerova, S. Padolski, Antonino Sergi, Yu. Potrebenikov, A. Salamon, Paul Laycock, Milena Misheva, A. Antonelli, D. Soldi, V. Palladino, A. Romano, Fausto Sargeni, K. Massri, R. W. L. Jones, M. Perrin-Terrin, D. Coward, A. Fucci, D. T. Madigozhin, L. Fulton, F. Duval, F. Brizioli, G. Khoriauli, Tommaso Spadaro, A P Ostankov, Fabrizio Petrucci, Rainer Wanke, M. Corvino, Andrea Biagioni, R. Volpe, T. Bache, B. Wrona, G. Lamanna, E. Menichetti, M. Fiorini, A. Baeva, H. D. Wahl, A. Sturgess, J. B. Dainton, Evgueni Goudzovski, J. Fu, Mauro Raggi, G. Lanfranchi, P. F. Dalpiaz, R. Marchevski, E. Gamberini, L. Gatignon, Leander Litov, M. Koval, J. Swallow, E. Cortina Gil, M. Vormstein, M. Piccini, Jürgen Engelfried, N. Doble, Vladimir Kekelidze, Matteo Lupi, V. Fascianelli, P. Rubin, Yu.A. Kudenko, H. O. Danielsson, Jacopo Pinzino, G. Lehmann Miotto, V. Obraztsov, C. Graham, V. Falaleev, A. Conovaloff, T. Numao, Paolo Valente, D. Protopopescu, A. Mefodev, E. Minucci, N. A. Molokanova, Babette Döbrich, Luca Pontisso, E. Iacopini, Nicolas Lurkin, M. B. Brunetti, V. E. Semenov, I. Mannelli, M. Napolitano, C. J. Parkinson, R. Piandani, L. Federici, V. Kozhuharov, N. Estrada-Tristan, M. Zamkovsky, Dave Britton, Georgi P. Georgiev, Viacheslav Duk, S. Martellotti, J. Jerhot, P. Petrov, B. Angelucci, L. Iacobuzio, E. B. Holzer, V. Sugonyaev, A. Ceccucci, Roberto Ammendola, A. M. Bragadireanu, Andrea Bizzeti, C. Cerri, A. Korotkova, Paolo Massarotti, M. Moulson, S. Trilov, Johannes Bernhard, V. Kurochka, A. Parenti, F. Spinella, D. Baigarashev, Claudio Santoni, A. Filippi, A. I. Zinchenko, Helen F Heath, R. Aliberti, R. Lollini, A. Norton, S. Schuchmann, E. Lari, Karol Kampf, A. Khotyantsev, Ernesto Migliore, S. Venditti, A. Shaikhiev, R. Page, T. Husek, J. Kunze, F. Hahn, S. Ghinescu, T. Capussela, A. Gianoli, B. Velghe, J. Carmignani, Francesco Gonnella, Tomas Blazek, A. Cotta Ramusino, D. Lomidze, D. E. Hutchcroft, Roberto Guida, O. Yushchenko, V. Kurshetsov, S. Kholodenko, B. Checcucci, P. Cooper, B. Jenninger, G. Latino, J. R. Fry, F. Bucci, Mario Giorgi, D. Di Filippo, P. Cenci, L. Bician, Roberta Arcidiacono, E. Gushchin, E. Pedreschi, M. Mirra, Matthew Noy, G. D'Agostini, M. Pepe, O. Hutanu, M. Lenti, F. Newson, S. Shkarovskiy, F. Marchetto, Piero Vicini, P. Lichard, A. Kleimenova, S. Movchan, C. Lazzeroni, F. Ambrosino, Emilio Leonardi, I. Polenkevich, M. Medvedeva, Giuseppe Ruggiero, F. Costantini, M. Boretto, M. Sozzi, Ilaria Neri, P. Lubrano, Vincenzo Bonaiuto, T. Enik, Douglas Bryman, Sergei Fedotov, N. De Simone, Vladimir Ryjov, G. Saracino, A. Mapelli, G. Anzivino, S. Giudici, E. Maurice, Alessandro Lonardo, Cristina Biino, Mattia Barbanera, Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Velghe, B., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Marchevski, R., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D???agostini, G., Raggi, M., Biagioni, A., Leonardi, E., Lonardo, A., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., D??brich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.
Subjects: Exotics, Nuclear and High Energy Physics, Physics beyond the Standard Model, Dark matter, NA62 experiment, 01 natural sciences, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, 010306 general physics, Physics, Range (particle radiation), Large Hadron Collider, kaon decays, hep-ex, 010308 nuclear & particles physics, Branching fraction, Settore FIS/04, Fixed target experiments, Beyond Standard Model, lcsh:QC770-798, Particle, Atomic physics, Particle Physics - Experiment, Order of magnitude
Abstract: A search for the $K^+ \to \pi^+ X$ decay, where $X$ is a long-lived feebly interacting particle, is performed through an interpretation of the $K^+ \to \pi^+ \nu \bar\nu$ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of $X$ masses, $0-110$ MeV/$c^2$ and $154-260$ MeV/$c^2$, and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR($K^+ \to \pi^+ X$), are competitive with previously reported searches in the first mass range, and improve on current limits in the second mass range by more than an order of magnitude. A search for the K$^{+}$ → π$^{+}$X decay, where X is a long-lived feebly interacting particle, is performed through an interpretation of the K$^{+}$ → $ {\pi}^{+}\nu \overline{\nu} $ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of X masses, 0–110 MeV/c$^{2}$ and 154–260 MeV/c$^{2}$, and lifetimes above 100 ps are considered. The limits set on the branching ratio, BR(K$^{+}$ → π$^{+}$X), are competitive with previously reported searches in the first mass range, and improve on current limits in the second mass range by more than an order of magnitude. A search for the $K^{+}\rightarrow\pi^{+}X$ decay, where $X$ is a long-lived feebly interacting particle, is performed through an interpretation of the $K^{+}\rightarrow\pi^{+}\nu\bar{\nu}$ analysis of data collected in 2017 by the NA62 experiment at CERN. Two ranges of $X$ masses, $0$-$110\,\text{MeV}/c^{2}$ and $154$-$260\,\text{MeV}/c^{2}$, and lifetimes above $100\,\text{ps}$ are considered. The limits set on the branching ratio, $\text{BR}(K^{+}\rightarrow\pi^{+}X)$, are competitive with previously reported searches in the first mass range, and improve on current limits in the second mass range by more than an order of magnitude.
Published: 2021
Full Text: View/download PDF

25. Search for π0 decays to invisible particles

Author: V. Palladino, A. Fucci, M. Boretto, J. Fu, L. Gatignon, E. Cortina Gil, Mattia Barbanera, S. Martellotti, Paul Laycock, B. Angelucci, L. Iacobuzio, E. B. Holzer, M. Sozzi, Mauro Piccini, M. Corvino, T. Bache, Paolo Massarotti, A. Mefodev, S. Venditti, A. Shaikhiev, E. Lari, J. Swallow, H. O. Danielsson, I. Mannelli, P. Rubin, Ilaria Neri, M. Vormstein, N. Estrada-Tristan, Vincenzo Bonaiuto, L. Peruzzo, B. Bloch-Devaux, F. Hahn, D. E. Hutchcroft, T. Enik, Douglas Bryman, O. Yushchenko, Sergei Fedotov, Claudio Santoni, Luca Pontisso, B. Velghe, J. Carmignani, A. Filippi, E. Iacopini, A. I. Zinchenko, S. Movchan, C. Lazzeroni, F. Ambrosino, Francesco Gonnella, Tomas Blazek, S. Ghinescu, P. Lubrano, Vladimir Ryjov, L. Federici, G. Lanfranchi, A. Conovaloff, A. Cotta Ramusino, T. Capussela, V. Cerny, A. Gianoli, V. Kurshetsov, V. Obraztsov, A. Mapelli, L. Di Lella, S. Kholodenko, D. Protopopescu, Roberto Guida, Nicolas Lurkin, M. B. Brunetti, Evgueni Goudzovski, Georgi P. Georgiev, Viacheslav Duk, R. Fantechi, V. E. Semenov, S. Giudici, S. Padolski, E. Imbergamo, Rainer Wanke, M. Perrin-Terrin, Johannes Bernhard, Z. Kucerova, Tommaso Spadaro, Roberto Ammendola, A. Parenti, P. Cooper, Vladimir Kekelidze, N. De Simone, F. Spinella, D. T. Madigozhin, D. Soldi, R. Lollini, A. Korotkova, B. Jenninger, J. R. Fry, Matteo Lupi, Ernesto Migliore, K. Massri, A. Salamon, E. Maurice, P. F. Dalpiaz, R. Marchevski, B. Wrona, Andrea Biagioni, R. Volpe, Alessandro Lonardo, E. Gamberini, F. Brizioli, M. Fiorini, Mario Giorgi, D. Di Filippo, P. Petrov, L. Fulton, F. Duval, V. Sugonyaev, E. Minucci, M. Lenti, Mauro Raggi, A. Khotyantsev, F. Bucci, Milena Misheva, R. Aliberti, A. Norton, A. Antonelli, T. Husek, G. Saracino, A. Baeva, J. Jerhot, Cristina Biino, Yu.A. Kudenko, Jürgen Engelfried, N. Doble, G. Anzivino, G. Lamanna, J. Kunze, V. Fascianelli, A. Kleimenova, Antonino Sergi, A. Sturgess, J. B. Dainton, G. Lehmann Miotto, C. Graham, V. Falaleev, D. Emelyanov, Babette Döbrich, C. J. Parkinson, V. Kozhuharov, M. Zamkovsky, R. W. L. Jones, Helen F Heath, Yu. Potrebenikov, Giuseppe Latino, D. Coward, R. Page, C. Cerri, S. Trilov, F. Newson, S. Shkarovskiy, G. Khoriauli, M. Medvedeva, Giuseppe Ruggiero, D. Lomidze, E. Menichetti, F. Costantini, Emilio Leonardi, I. Polenkevich, Jacopo Pinzino, L. Bician, Roberta Arcidiacono, E. Gushchin, P. Cenci, E. Pedreschi, M. Mirra, A. M. Bragadireanu, A. Romano, Fausto Sargeni, M. Moulson, D. Baigarashev, Karol Kampf, Fabrizio Petrucci, Leander Litov, A P Ostankov, Matthew Noy, M. Koval, H. D. Wahl, G. D'Agostini, N. A. Molokanova, M. Pepe, M. Napolitano, O. Hutanu, F. Marchetto, Piero Vicini, P. Lichard, T. Numao, Paolo Valente, R. Piandani, Dave Britton, A. Ceccucci, B. Checcucci, Andrea Bizzeti, V. Kurochka, S. Schuchmann, Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Velghe, B., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Marchevski, R., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D???agostini, G., Raggi, M., Biagioni, A., Leonardi, E., Lonardo, A., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Y., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., D??brich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.
Subjects: Exotics, branching ratio: upper limit [pi0], Nuclear and High Energy Physics, Particle physics, Meson, NA62 experiment, 01 natural sciences, NA62, Standard Model, High Energy Physics - Experiment, 0103 physical sciences, mixing, ddc:530, fluctuation [background], pi0: branching ratio: upper limit, K: branching ratio, 010306 general physics, invisible decay [pi0], Physics, lifetime, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, Branching fraction, Settore FIS/04, branching ratio [K], pi0: invisible decay, Fermion, CERN SPS, hidden sector, Fixed target experiments, Rare decay, coupling [fermion], Beyond Standard Model, Higgs boson, axion-like particles, background: fluctuation, High Energy Physics::Experiment, fermion: coupling, Particle Physics - Experiment, experimental results
Abstract: Journal of high energy physics 02(2), 201 (2021). doi:10.1007/JHEP02(2021)201, The NA62 experiment at the CERN SPS reports a study of a sample of $4 \times10^{9}$ tagged $\pi^0$ mesons from $K^+ \to \pi^+ \pi^0 (\gamma)$, searching for the decay of the $\pi^0$ to invisible particles. No signal is observed in excess of the expected background fluctuations. An upper limit of $4.4 \times10^{-9}$ is set on the branching ratio at 90% confidence level, improving on previous results by a factor of 60. This result can also be interpreted as a model-independent upper limit on the branching ratio for the decay $K^+ \to \pi^+ X$, where $X$ is a particle escaping detection with mass in the range 0.110-0.155 GeV$/c^2$ and rest lifetime greater than 100 ps. Model-dependent upper limits are obtained assuming $X$ to be an axion-like particle with dominant fermion couplings or a dark scalar mixing with the Standard Model Higgs boson., Published by SISSA, [Trieste]
Published: 2021
Full Text: View/download PDF

26. Measurement of the very rare K^{+} + →{\pi}^{+}\nu \overline{\nu}π + ν ν decay

Author: Paul Laycock, L. Di Lella, D. Lomidze, Yu. Potrebenikov, Vladimir Ryjov, D. E. Hutchcroft, O. Yushchenko, G. Saracino, Giuseppe Latino, D. Coward, E. Cortina Gil, M. Perrin-Terrin, Antonino Sergi, S. Venditti, A. Shaikhiev, A. Mapelli, G. Lanfranchi, V. Kurshetsov, V. Fascianelli, Rainer Wanke, B. Wrona, S. Kholodenko, S. Giudici, V. Palladino, Y. Petrov, F. Marchetto, F. Hahn, Piero Vicini, A. Fucci, Mattia Barbanera, V. Kurochka, Yu.A. Kudenko, A. Sturgess, G. Anzivino, V. Cerny, S. Padolski, P. Cooper, M. Boretto, J. B. Dainton, P. Lichard, N. A. Molokanova, A. Korotkova, J. Henshaw, S. Ghinescu, Georgi P. Georgiev, Viacheslav Duk, A. Kleimenova, M. Sozzi, B. Jenninger, B. Velghe, J. Carmignani, S. Schuchmann, E. Pedreschi, M. Napolitano, Ilaria Neri, C. Cerri, Roberto Ammendola, S. Trilov, Vincenzo Bonaiuto, T. Enik, Douglas Bryman, Sergei Fedotov, L. Gatignon, Emilio Leonardi, Fabrizio Petrucci, N. Doble, E. Minucci, P. Lubrano, D. Soldi, Andrea Biagioni, R. Volpe, M. Fiorini, Mario Giorgi, D. Di Filippo, A. Romano, Fausto Sargeni, M. Mirra, V. Sugonyaev, A. Norton, Leander Litov, I. Polenkevich, V. Kozhuharov, M. Zamkovsky, G. Khoriauli, Alessandro Lonardo, A P Ostankov, Johannes Bernhard, S. Movchan, Matthew Noy, C. Lazzeroni, F. Ambrosino, N. De Simone, P. Rubin, Mauro Piccini, E. Maurice, R. Aliberti, M. Koval, D. T. Madigozhin, Paolo Massarotti, A. Parenti, J. Jerhot, M. Vormstein, E. Menichetti, F. Spinella, Cristina Biino, K. Massri, A. Baeva, J. R. Fry, Helen F Heath, H. O. Danielsson, E. Lari, Evgueni Goudzovski, R. Lollini, G. Lehmann Miotto, G. D'Agostini, A. M. Bragadireanu, L. Bician, D. Protopopescu, Nicolas Lurkin, M. Medvedeva, Giuseppe Ruggiero, C. Graham, A. Salamon, M. Pepe, E. Iacopini, Roberta Arcidiacono, D. Emelyanov, Ernesto Migliore, M. B. Brunetti, M. Corvino, T. Bache, M. Moulson, V. Falaleev, J. Kunze, F. Brizioli, O. Hutanu, E. Gushchin, D. Baigarashev, J. Swallow, T. Numao, Karol Kampf, Matteo Lupi, Babette Döbrich, R. W. L. Jones, Paolo Valente, L. Fulton, F. Duval, J. L. Fu, Luca Pontisso, Jacopo Pinzino, Claudio Santoni, R. Fantechi, F. Costantini, A. Filippi, A. I. Zinchenko, V. Obraztsov, Dave Britton, A. Conovaloff, C. J. Parkinson, G. Lamanna, H. Wahl, L. Federici, V. E. Semenov, L. Peruzzo, S. Martellotti, T. Capussela, A. Ceccucci, A. Gianoli, M. Lenti, B. Bloch-Devaux, B. Angelucci, L. Iacobuzio, E. B. Holzer, P. Cenci, Vladimir Kekelidze, B. Checcucci, Andrea Bizzeti, Roberto Guida, E. Imbergamo, R. Piandani, T. Husek, F. Newson, S. Shkarovskiy, Mauro Raggi, R. Page, Z. Kucerova, F. Bucci, Milena Misheva, A. Antonelli, P. F. Dalpiaz, R. Marchevski, E. Gamberini, Jürgen Engelfried, Tommaso Spadaro, Francesco Gonnella, Tomas Blazek, A. Cotta Ramusino, P. Petrov, A. Khotyantsev, A. Mefodev, I. Mannelli, N. Estrada-Tristan, and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Physics, FCNC Interaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, hep-ex, Flavour Changing Neutral Currents, Analytical chemistry, QC770-798, 01 natural sciences, Standard Model, Flavor physics, Rare decay, Fixed target experiments, Nuclear and particle physics. Atomic energy. Radioactivity, 0103 physical sciences, Sensitivity (control systems), 010306 general physics, Particle Physics - Experiment
Abstract: The NA62 experiment reports the branching ratio measurement $$ \mathrm{BR}\left({K}^{+}\to {\pi}^{+}\nu \overline{\nu}\right)=\left({10.6}_{-3.4}^{+4.0}\left|{}_{\mathrm{stat}}\right.\pm {0.9}_{\mathrm{syst}}\right)\times {10}^{-11} $$ BR K + → π + ν ν ¯ = 10.6 − 3.4 + 4.0 stat ± 0.9 syst × 10 − 11 at 68% CL, based on the observation of 20 signal candidates with an expected background of 7.0 events from the total data sample collected at the CERN SPS during 2016–2018. This provides evidence for the very rare K+→$$ {\pi}^{+}\nu \overline{\nu} $$ π + ν ν ¯ decay, observed with a significance of 3.4σ. The experiment achieves a single event sensitivity of (0.839 ± 0.054) × 10−11, corresponding to 10.0 events assuming the Standard Model branching ratio of (8.4 ± 1.0) × 10−11. This measurement is also used to set limits on BR(K+→ π+X), where X is a scalar or pseudo-scalar particle. Details are given of the analysis of the 2018 data sample, which corresponds to about 80% of the total data sample.
Published: 2021

27. Measurement of the very rare K+ -> pi+ nu nu bar decay

Author: E. Cortina Gil, A. Kleimenova, E. Minucci, S. Padolski, P. Petrov, A. Shaikhiev, R. Volpe, T. Numao, Y. Petrov, B. Velghe, D. Bryman, J. Fu, T. Husek, J. Jerhot, K. Kampf, M. Zamkovsky, R. Aliberti, G. Khoriauli, J. Kunze, D. Lomidze, L. Peruzzo, M. Vormstein, R. Wanke, P. Dalpiaz, M. Fiorini, I. Neri, A. Norton, F. Petrucci, H. Wahl, A. Cotta Ramusino, A. Gianoli, E. Iacopini, G. Latino, M. Lenti, A. Parenti, A. Bizzeti, F. Bucci, A. Antonelli, G. Georgiev, V. Kozhuharov, G. Lanfranchi, S. Martellotti, M. Moulson, T. Spadaro, F. Ambrosino, T. Capussela, M. Corvino, D. Di Filippo, P. Massarotti, M. Mirra, M. Napolitano, G. Saracino, G. Anzivino, F. Brizioli, E. Imbergamo, R. Lollini, R. Piandani, C. Santoni, M. Barbanera, P. Cenci, B. Checcucci, P. Lubrano, M. Lupi, M. Pepe, M. Piccini, F. Costantini, L. Di Lella, N. Doble, M. Giorgi, S. Giudici, G. Lamanna, E. Lari, E. Pedreschi, M. Sozzi, C. Cerri, R. Fantechi, L. Pontisso, F. Spinella, I. Mannelli, G. D???Agostini, M. Raggi, A. Biagioni, E. Leonardi, A. Lonardo, P. Valente, P. Vicini, R. Ammendola, V. Bonaiuto, A. Fucci, A. Salamon, F. Sargeni, R. Arcidiacono, B. Bloch-Devaux, M. Boretto, E. Menichetti, E. Migliore, D. Soldi, C. Biino, A. Filippi, F. Marchetto, J. Engelfried, N. Estrada-Tristan, A. M. Bragadireanu, S. A. Ghinescu, O. E. Hutanu, A. Baeva, D. Baigarashev, D. Emelyanov, T. Enik, V. Falaleev, V. Kekelidze, A. Korotkova, L. Litov, D. Madigozhin, M. Misheva, N. Molokanova, S. Movchan, I. Polenkevich, Yu. Potrebenikov, S. Shkarovskiy, A. Zinchenko, S. Fedotov, E. Gushchin, A. Khotyantsev, Y. Kudenko, V. Kurochka, M. Medvedeva, A. Mefodev, S. Kholodenko, V. Kurshetsov, V. Obraztsov, A. Ostankov, V. Semenov, V. Sugonyaev, O. Yushchenko, L. Bician, T. Blazek, V. Cerny, Z. Kucerova, J. Bernhard, A. Ceccucci, H. Danielsson, N. De Simone, F. Duval, B. D??brich, L. Federici, E. Gamberini, L. Gatignon, R. Guida, F. Hahn, E. B. Holzer, B. Jenninger, M. Koval, P. Laycock, G. Lehmann Miotto, P. Lichard, A. Mapelli, R. Marchevski, K. Massri, M. Noy, V. Palladino, M. Perrin-Terrin, J. Pinzino, V. Ryjov, S. Schuchmann, S. Venditti, T. Bache, M. B. Brunetti, V. Duk, V. Fascianelli, J. R. Fry, F. Gonnella, E. Goudzovski, J. Henshaw, L. Iacobuzio, C. Lazzeroni, N. Lurkin, F. Newson, C. Parkinson, A. Romano, A. Sergi, A. Sturgess, J. Swallow, H. Heath, R. Page, S. Trilov, B. Angelucci, D. Britton, C. Graham, D. Protopopescu, J. Carmignani, J. B. Dainton, R. W. L. Jones, G. Ruggiero, L. Fulton, D. Hutchcroft, E. Maurice, B. Wrona, A. Conovaloff, P. Cooper, D. Coward, P. Rubin, Cortina Gil, E., Kleimenova, A., Minucci, E., Padolski, S., Petrov, P., Shaikhiev, A., Volpe, R., Numao, T., Petrov, Y., Velghe, B., Bryman, D., Fu, J., Husek, T., Jerhot, J., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Parenti, A., Bizzeti, A., Bucci, F., Antonelli, A., Georgiev, G., Kozhuharov, V., Lanfranchi, G., Martellotti, S., Moulson, M., Spadaro, T., Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Piandani, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Lamanna, G., Lari, E., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Pontisso, L., Spinella, F., Mannelli, I., D???agostini, G., Raggi, M., Biagioni, A., Leonardi, E., Lonardo, A., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Baeva, A., Baigarashev, D., Emelyanov, D., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Litov, L., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Kucerova, Z., Bernhard, J., Ceccucci, A., Danielsson, H., De Simone, N., Duval, F., D??brich, B., Federici, L., Gamberini, E., Gatignon, L., Guida, R., Hahn, F., Holzer, E. B., Jenninger, B., Koval, M., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Marchevski, R., Massri, K., Noy, M., Palladino, V., Perrin-Terrin, M., Pinzino, J., Ryjov, V., Schuchmann, S., Venditti, S., Bache, T., Brunetti, M. B., Duk, V., Fascianelli, V., Fry, J. R., Gonnella, F., Goudzovski, E., Henshaw, J., Iacobuzio, L., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Carmignani, J., Dainton, J. B., Jones, R. W. L., Ruggiero, G., Fulton, L., Hutchcroft, D., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.
Published: 2021

28. An investigation of the very rare $ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $ decay

Author: H. O. Danielsson, Luca Pontisso, L. Federici, P. F. Dalpiaz, R. Marchevski, E. Gamberini, Jürgen Engelfried, A. Sturgess, Vladimir Ryjov, J. B. Dainton, Antonino Sergi, Paul Laycock, Fabrizio Petrucci, M. Medvedeva, Giuseppe Ruggiero, T. Numao, Paolo Valente, D. E. Hutchcroft, F. Marchetto, M. Lenti, M. Perrin-Terrin, D. Lomidze, Piero Vicini, O. Yushchenko, L. Peruzzo, S. Martellotti, A. Mapelli, V. Palladino, F. Costantini, P. Lubrano, P. Lichard, B. Angelucci, B. Bloch-Devaux, L. Bician, Leander Litov, G. Lanfranchi, V. Obraztsov, L. Iacobuzio, E. B. Holzer, S. Giudici, P. Rubin, J. R. Fry, Tommaso Spadaro, R. Piandani, A. Fucci, Roberta Arcidiacono, F. Hahn, Vladimir Kekelidze, V. Kurshetsov, Georgi P. Georgiev, E. Cortina Gil, D. Emelyanov, V. E. Semenov, Dave Britton, Mattia Barbanera, Viacheslav Duk, N. De Simone, S. Kholodenko, E. Gushchin, M. Boretto, G. Lehmann Miotto, C. Graham, E. Maurice, S. Movchan, C. Lazzeroni, A. Ceccucci, E. Iacopini, V. Falaleev, B. Checcucci, L. Di Lella, Roberto Ammendola, F. Ambrosino, Andrea Bizzeti, Babette Döbrich, P. Cooper, G. D'Agostini, B. Velghe, J. Carmignani, E. Minucci, M. Sozzi, V. Cerny, Claudio Santoni, M. Pepe, Johannes Bernhard, E. Pedreschi, Andrea Biagioni, R. Volpe, C. J. Parkinson, S. Padolski, F. Newson, S. Shkarovskiy, M. Fiorini, R. Page, A. Filippi, A. I. Zinchenko, J. Fu, Rainer Wanke, O. Hutanu, A. Mefodev, H. D. Wahl, Yu. Potrebenikov, Francesco Gonnella, R. Fantechi, B. Wrona, A. Parenti, A. Salamon, L. Gatignon, J. Jerhot, Giuseppe Latino, M. Mirra, Z. Kucerova, I. Mannelli, N. Estrada-Tristan, G. Saracino, D. Coward, F. Brizioli, M. Koval, F. Spinella, T. Capussela, Evgueni Goudzovski, A. Gianoli, Mauro Piccini, Roberto Guida, S. Venditti, A. Shaikhiev, Tomas Blazek, A. Romano, Fausto Sargeni, Paolo Massarotti, R. Lollini, Ilaria Neri, Vincenzo Bonaiuto, G. Anzivino, Yu.A. Kudenko, T. Enik, Tomáš Husek, Douglas Bryman, Sergei Fedotov, A P Ostankov, V. Sugonyaev, F. Bucci, A. Cotta Ramusino, V. Kozhuharov, Milena Misheva, V. Kurochka, Ernesto Migliore, M. Zamkovsky, Matthew Noy, Mauro Raggi, E. Lari, R. W. L. Jones, D. T. Madigozhin, G. Khoriauli, M. Corvino, Alessandro Lonardo, M. Vormstein, T. Bache, Emilio Leonardi, S. Ghinescu, S. Schuchmann, R. Aliberti, A. Norton, Matteo Lupi, A. Antonelli, Helen F Heath, I. Polenkevich, D. Soldi, P. Cenci, Cristina Biino, K. Massri, A. M. Bragadireanu, B. Jenninger, D. Protopopescu, E. Menichetti, Nicolas Lurkin, M. B. Brunetti, J. Kunze, L. Fulton, F. Duval, Mario Giorgi, D. Di Filippo, M. Moulson, V. Fascianelli, P. Petrov, D. Baigarashev, A. Khotyantsev, Karol Kampf, E. Imbergamo, Jacopo Pinzino, G. Lamanna, N. Doble, A. Kleimenova, N. A. Molokanova, M. Napolitano, C. Cerri, S. Trilov, A. Korotkova, A. Baeva, J. Swallow, A. Conovaloff, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and European Project: 268062,EC:FP7:ERC,ERC-2010-AdG_20100224,UNIVERSALEPTO(2011)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Physics beyond the Standard Model, Flavour Changing Neutral Currents, 01 natural sciences, Standard Model, Flavor physics, Fixed target experiments, Rare decay, 0103 physical sciences, Pi, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Sensitivity (control systems), 010306 general physics
Abstract: The NA62 experiment reports an investigation of the $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ K + → π + ν ν ¯ mode from a sample of K+ decays collected in 2017 at the CERN SPS. The experiment has achieved a single event sensitivity of (0.389 ± 0.024) × 10−10, corresponding to 2.2 events assuming the Standard Model branching ratio of (8.4 ± 1.0) × 10−11. Two signal candidates are observed with an expected background of 1.5 events. Combined with the result of a similar analysis conducted by NA62 on a smaller data set recorded in 2016, the collaboration now reports an upper limit of 1.78 × 10−10 for the $$ {K}^{+}\to {\pi}^{+}\nu \overline{\nu} $$ K + → π + ν ν ¯ branching ratio at 90% CL. This, together with the corresponding 68% CL measurement of ($$ {0.48}_{-0.48}^{+0.72} $$ 0.48 − 0.48 + 0.72 ) × 10−10, are currently the most precise results worldwide, and are able to constrain some New Physics models that predict large enhancements still allowed by previous measurements.
Published: 2020
Full Text: View/download PDF

29. Searches for lepton flavour and lepton number violation in K$^+$ decays

Author: G. Mannocchi, Tomáš Husek, K. Massri, P. S. Cooper, D. T. Madigozhin, D. Soldi, R. Marchevski, Antonino Sergi, F. Hahn, Matteo Lupi, J. R. Fry, C. Cerri, S. Trilov, V. Kurochka, R. Guida, T. Bache, L. Iacobuzio, S. Schuchmann, R. Fantechi, P. F. Dalpiaz, M. Raggi A. Romano, Claudio Santoni, Emilio Leonardi, Christopher John Parkinson, L. Fulton, F. Duval, David Lomidze, Roberto Piandani, J. Kunze, E. Minucci, A. Filippi, G. D'Agostini, M. Pepe, V. Sugonyaev, G. Saracino, A.I. Zinchenko, N. Doble, I. Polenkevich, A. Mefodev, D. Coward, O. Hutanu, Jürgen Engelfried, E. Pedreschi, V. Fascianelli, R. Aliberti, A. Norton, T. Capussela, A. Gianoli, V. Obraztsov, F. Bucci, G. Ruggiero, J. Carmignani, V. E. Semenov, Milena Misheva, M. Mirra, G. Lehmann Miotto, G. Lamanna, I. Mannelli, P. Petrov, C. Graham, Babette Döbrich, Yu. Kudenko, G. Anzivino, A. Sturgess, N. A. Molokanova, Evgueni Goudzovski, H. O. Danielsson, Mattia Barbanera, D. E. Hutchcroft, S. Padolski, M. Sozzi, V. Palladino, Fausto Sargeni, A. Antonelli, M. Napolitano, O. Yushchenko, Luca Pontisso, V. Kurshetsov, E. Gamberini, M. Fiorini, A. Fucci, Angelo Biagioni, A P Ostankov, T. Numao, S. Kholodenko, Ilaria Neri, Vincenzo Bonaiuto, B. Angelucci, R. Volpe, Roberta Arcidiacono, B. Velghe, T. Enik, Douglas Bryman, L. Peruzzo, B. Bloch-Devaux, Sergei Fedotov, Vladimir Kekelidze, B. Jenninger, Alessandro Lonardo, Mauro Piccini, Paolo Massarotti, E. Lari, E. Gushchin, F. Newson, V. Cerny, Rainer Wanke, Aigul Baeva, R. D. page, Augusto Ceccucci, Z. Kucerova, F. Marchetto, Piero Vicini, L. Gatignon, M. Corvino, D. Protopopescu, Emilie Maurice, Nicolas Lurkin, Mario Giorgi, P. Rubin, D. Di Filippo, S. Shkarovskiy, M. B. Brunetti, G. Khoriauli, M. Lenti, R. W. L. Jones, Yu. Potrebenikov, P. Lichard, E. Iacopini, Giuseppe Latino, J. B. Dainton, M. Perrin-Terrin, Cristina Biino, J. Jerhot, L. Di Lella, Tommaso Spadaro, M. Boretto, V. Kozhuharov, M. Zamkovsky, Vladimir Ryjov, Johannes Bernhard, Helen F Heath, A. Parenti, F. Spinella, S. Movchan, C. Lazzeroni, F. Ambrosino, R. Lollini, Ernesto Migliore, A. Mapelli, B. Wrona, P. Lubrano, S. Giudici, M. Vormstein, P. Cenci, J. L. Fu, M. Koval, S. Venditti, A. Shaikhiev, A. Khotyantsev, S. Ghinescu, M. Bragadireanu, A. Korotkova, E. Imbergamo, V. Falaleev, Francesco Gonnella, L. Bician, Luca Federici, J. Swallow, Tomas Blazek, A. Cotta Ramusino, A. Conovaloff, J. Pinzino, Fabrizio Petrucci, Leander Litov, A. Kleimenova, Y. Petrov, Georgi P. Georgiev, Viacheslav Duk, Roberto Ammendola, A. Salamon, F. Brizioli, M. Moulson, Paul Laycock, Karol Kampf, H. D. Wahl, Paolo Valente, G. Lanfranchi, Dave Britton, N. Estrada-Tristan, B. Checcucci, Andrea Bizzeti, S. Martellotti, E. B. Holzer, M. Noy, E. Menichetti, N. De Simone, M. Medvedeva, and F. Costantini
Subjects: Physics, Particle physics, Range (particle radiation), Large Hadron Collider, Settore FIS/04, Flavour, NA62 experiment, Lepton number, Charged particle, Standard Model (mathematical formulation), High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment, Lepton
Abstract: The NA62 experiment at the CERN SPS is designed to conduct precision tests of the Standard Model by studying rare decays of charged kaons. NA62 took data in 2016-2018 and collected a large sample of charged kaon decays into final states with multiple charged particles. The sensitivity to a range of lepton flavour and lepton number violating kaon decays provided by this data set is improved over the previously reported measurements. Results from the searches of $K^+→ π^-l^+l^+$ decays with a partial NA62 data sample are presented.
Published: 2020

30. Search forK+→π+νν‾at NA62

Author: R. Volpe, G. Aglieri Rinella, R. Aliberti, F. Ambrosino, R. Ammendola, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, I. Azhinenko, S. Balev, M. Barbanera, J. Bendotti, A. Biagioni, L. Bician, C. Biino, A. Bizzeti, T. Blazek, A. Blik, B. Bloch-Devaux, V. Bolotov, V. Bonaiuto, M. Boretto, M. Bragadireanu, D. Britton, G. Britvich, M.B. Brunetti, D. Bryman, F. Bucci, F. Butin, E. Capitolo, C. Capoccia, T. Capussela, A. Cassese, A. Catinaccio, A. Cecchetti, A. Ceccucci, P. Cenci, V. Cerny, C. Cerri, B. Checcucci, O. Chikilev, S. Chiozzi, R. Ciaranfi, G. Collazuol, A. Conovaloff, P. Cooke, P. Cooper, G. Corradi, E. Cortina Gil, F. Costantini, F. Cotorobai, A. Cotta Ramusino, D. Coward, G. D'Agostini, J. Dainton, P. Dalpiaz, H. Danielsson, J. Degrange, N. De Simone, D. Di Filippo, L. Di Lella, S. Di Lorenzo, N. Dixon, N. Doble, B. Dobrich, V. Duk, V. Elsha, J. Engelfried, T. Enik, N. Estrada, V. Falaleev, R. Fantechi, V. Fascianelli, L. Federici, S. Fedotov, M. Fiorini, J. Fry, J. Fu, A. Fucci, L. Fulton, S. Gallorini, S. Galeotti, E. Gamberini, L. Gatignon, G. Georgiev, A. Gianoli, M. Giorgi, S. Giudici, L. Glonti, A. Goncalves Martins, F. Gonnella, E. Goudzovski, R. Guida, E. Gushchin, F. Hahn, B. Hallgren, H. Heath, F. Herman, T. Husek, O. Hutanu, D. Hutchcroft, L. Iacobuzio, E. Iacopini, E. Imbergamo, O. Jamet, P. Jarron, E. Jones, T. Jones, K. Kampf, J. Kaplon, V. Kekelidze, S. Kholodenko, G. Khoriauli, A. Khotyantsev, A. Khudyakov, Yu. Kiryushin, A. Kleimenova, K. Kleinknecht, A. Kluge, M. Koval, V. Kozhuharov, M. Krivda, Z. Kucerova, Yu. Kudenko, J. Kunze, G. Lamanna, G. Latino, C. Lazzeroni, G. Lehmann-Miotto, R. Lenci, M. Lenti, E. Leonardi, P. Lichard, R. Lietava, L. Litov, R. Lollini, D. Lomidze, A. Lonardo, M. Lupi, N. Lurkin, K. McCormick, D. Madigozhin, G. Maire, C. Mandeiro, I. Mannelli, G. Mannocchi, A. Mapelli, F. Marchetto, R. Marchevski, S. Martellotti, P. Massarotti, K. Massri, P. Matak, E. Maurice, A. Mefodev, E. Menichetti, E. Minucci, M. Mirra, M. Misheva, N. Molokanova, J. Morant, M. Morel, M. Moulson, S. Movchan, D. Munday, M. Napolitano, I. Neri, F. Newson, A. Norton, M. Noy, G. Nuessle, T. Numao, V. Obraztsov, A. Ostankov, S. Padolski, R. Page, V. Palladino, G. Paoluzzi, C. Parkinson, E. Pedreschi, M. Pepe, F. Perez Gomez, M. Perrin-Terrin, L. Peruzzo, P. Petrov, F. Petrucci, R. Piandani, M. Piccini, D. Pietreanu, J. Pinzino, I. Polenkevich, L. Pontisso, Yu. Potrebenikov, D. Protopopescu, F. Raffaelli, M. Raggi, P. Riedler, A. Romano, P. Rubin, G. Ruggiero, V. Russo, V. Ryjov, A. Salamon, G. Salina, V. Samsonov, C. Santoni, G. Saracino, F. Sargeni, V. Semenov, A. Sergi, M. Serra, A. Shaikhiev, S. Shkarovskiy, I. Skillicorn, D. Soldi, A. Sotnikov, V. Sugonyaev, M. Sozzi, T. Spadaro, F. Spinella, R. Staley, A. Sturgess, P. Sutcliffe, N. Szilasi, D. Tagnani, S. Trilov, M. Valdata-Nappi, P. Valente, M. Vasile, T. Vassilieva, B. Velghe, M. Veltri, S. Venditti, P. Vicini, M. Vormstein, H. Wahl, R. Wanke, P. Wertelaers, A. Winhart, R. Winston, B. Wrona, O. Yushchenko, M. Zamkovsky, and A. Zinchenko
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Meson, 010308 nuclear & particles physics, Physics beyond the Standard Model, NA62 experiment, 01 natural sciences, Measure (mathematics), Nuclear physics, Quality (physics), 0103 physical sciences, 010306 general physics
Abstract: Among the meson decays, K → π ν ν ‾ are the cleanest environment, from the theoretical point of view, where to search for new physics effects. The NA62 Experiment at CERN SPS aims to measure the BR ( K + → π + ν ν ‾ ) with a 10% precision by the end of 2018. It has been commissioned with technical runs in 2014 and 2015, and some preliminary results of the detector performances and quality of data are here reported.
Published: 2017
Full Text: View/download PDF

31. Search for production of an invisible dark photon in (0) decays

Author: T. Numao, Paolo Valente, G. Mannocchi, Milena Misheva, M. Perrin-Terrin, Mattia Barbanera, S. Martellotti, A. Salamon, Dave Britton, B. Angelucci, L. Iacobuzio, E. B. Holzer, F. Brizioli, J. Jerhot, A. Ceccucci, F. Bucci, A. Antonelli, Andrea Bizzeti, P. Cenci, Paul Laycock, F. Hahn, E. Pedreschi, V. Kurochka, N. A. Molokanova, M. Mirra, R. Page, A. Sturgess, J. B. Dainton, P. Lubrano, Roberta Arcidiacono, D. Soldi, S. Schuchmann, E. Gushchin, K. Massri, R. Fantechi, V. Cerny, Tomáš Husek, M. Napolitano, J. Kunze, N. De Simone, S. Padolski, Vladimir Kekelidze, D. T. Madigozhin, S. Venditti, A. Shaikhiev, Evgueni Goudzovski, G. Lanfranchi, E. Maurice, L. Fulton, F. Duval, A. M. Bragadireanu, Rainer Wanke, L. Peruzzo, Cristina Biino, E. Minucci, M. Vormstein, M. Moulson, M. Lenti, P. F. Dalpiaz, R. Marchevski, H. D. Wahl, Andrea Biagioni, R. Volpe, M. Fiorini, B. Bloch-Devaux, S. Ghinescu, G. Khoriauli, E. Imbergamo, E. Menichetti, L. Di Lella, F. Newson, Tommaso Spadaro, Karol Kampf, G. D'Agostini, S. Movchan, C. Lazzeroni, E. Gamberini, Matteo Lupi, C. Cerri, Fabrizio Petrucci, G. Saracino, Y. Petrov, M. Boretto, Leander Litov, F. Ambrosino, M. Pepe, S. Trilov, V. Fascianelli, Yu.A. Kudenko, V. Sugonyaev, Z. Kucerova, S. Shkarovskiy, A. Korotkova, M. Koval, M. Sozzi, Antonino Sergi, Jacopo Pinzino, Yu. Potrebenikov, Georgi P. Georgiev, O. Hutanu, B. Wrona, B. Jenninger, V. Palladino, A. Fucci, G. Anzivino, Viacheslav Duk, Jürgen Engelfried, R. Aliberti, P. Petrov, Mauro Raggi, A. Norton, Ilaria Neri, Vincenzo Bonaiuto, T. Enik, Douglas Bryman, H. O. Danielsson, D. Coward, Sergei Fedotov, Roberto Ammendola, Vladimir Ryjov, V. Obraztsov, A. Khotyantsev, A. Mefodev, D. E. Hutchcroft, A. Mapelli, P. Rubin, O. Yushchenko, Luca Pontisso, I. Mannelli, F. Marchetto, L. Federici, Piero Vicini, S. Giudici, Mario Giorgi, D. Di Filippo, V. E. Semenov, V. Kurshetsov, Claudio Santoni, N. Estrada-Tristan, S. Kholodenko, Francesco Gonnella, G. Lehmann Miotto, J. Fu, C. Graham, P. Lichard, A. Filippi, Tomas Blazek, A. I. Zinchenko, B. Checcucci, E. Iacopini, A. Cotta Ramusino, P. Cooper, L. Gatignon, M. Corvino, L. Bician, T. Capussela, V. Falaleev, V. Kozhuharov, J. Swallow, M. Zamkovsky, A. Gianoli, Roberto Guida, D. Protopopescu, Paolo Massarotti, R. W. L. Jones, Babette Döbrich, Nicolas Lurkin, E. Lari, M. B. Brunetti, A. Romano, Fausto Sargeni, C. J. Parkinson, A. Conovaloff, Emilio Leonardi, A P Ostankov, I. Polenkevich, N. Doble, Matthew Noy, Helen F Heath, M. Medvedeva, Giuseppe Ruggiero, D. Lomidze, F. Costantini, T. Bache, M. Piccini, G. Lamanna, A. Kleimenova, Johannes Bernhard, A. Parenti, F. Spinella, R. Lollini, Ernesto Migliore, G. Latino, J. R. Fry, Alessandro Lonardo, E. Cortina Gil, Roberto Piandani, B. Velghe, J. Carmignani, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), NA62, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Exotics, Photon, S009:Desig=15, Beyond Standard Model, Exotics, Fixed target experiments, Rare decay, NA62 experiment, 7. Clean energy, 01 natural sciences, Dark photon, NA62, High Energy Physics - Experiment, Settore FIS/04 - Fisica Nucleare e Subnucleare, Economica, photon: mass, photon: coupling, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], pi0: branching ratio: upper limit, +pi%2B+pi0%22">K+ --> pi+ pi0, Physics, S029HPH, photon: invisible decay, Coupling (probability), K+: hadronic decay, mass dependence, Fixed target experiment, Fixed target experiments, Production (computer science), S009.15, K+: secondary beam, beyond standard model, Particle Physics - Experiment, Exotic, rare decay, Nuclear and High Energy Physics, Particle physics, Meson, pi0: radiative decay, coupling constant: upper limit, Partícules (Física nuclear), PE2_2, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, +photon+neutrino+antineutrino%22">pi0 --> photon neutrino antineutrino, 010306 general physics, fixed target experiments, photon: hidden sector, pi0: electromagnetic decay, hep-ex, 010308 nuclear & particles physics, Branching fraction, exotics, CERN SPS, Rare decay, Orders of magnitude (time), Beyond Standard Model, lcsh:QC770-798, High Energy Physics::Experiment, Camps, Teoria quàntica de, experimental results
Abstract: The results of a search for π decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of 4.12 × 10 tagged π mesons, no signal is observed. Assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a function of the dark photon mass, improving on previous searches in the mass range 60–110 MeV/c. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay π→ γνν¯ , improving the current limit by more than three orders of magnitude.
Published: 2019
Full Text: View/download PDF

32. Searches for lepton number violating $K^+$ decays

Author: Tomáš Husek, D. T. Madigozhin, A. Sturgess, J. B. Dainton, Matteo Lupi, P. F. Dalpiaz, R. Marchevski, E. Gamberini, Jürgen Engelfried, T. Bache, G. Latino, Claudio Santoni, A. Filippi, A. I. Zinchenko, M. Medvedeva, J. R. Fry, E. Maurice, T. Capussela, A. Gianoli, Alessandro Lonardo, E. Cortina Gil, Roberto Piandani, Giuseppe Ruggiero, H. O. Danielsson, Roberto Guida, V. Kurochka, Luca Pontisso, M. Piccini, Yu. Potrebenikov, G. Lehmann Miotto, A. Kleimenova, Vladimir Ryjov, L. Federici, C. Graham, F. Bucci, D. Coward, B. Velghe, J. Carmignani, M. Boretto, L. Di Lella, Tommaso Spadaro, M. Vormstein, S. Schuchmann, V. Falaleev, M. Misheva, F. Costantini, N. Doble, Babette Döbrich, G. Mannocchi, G. D'Agostini, M. Pepe, A. Mapelli, B. Wrona, S. Giudici, P. Cenci, Fabrizio Petrucci, G. Saracino, O. Hutanu, C. J. Parkinson, David Hutchcroft, Emilio Leonardi, P. Rubin, Leander Litov, V. Kozhuharov, I. Polenkevich, M. Zamkovsky, A. Salamon, G. Khoriauli, Antonino Sergi, A. Romano, Fausto Sargeni, G. Anzivino, A. Mefodev, I. Mannelli, A P Ostankov, M. Koval, E. Iacopini, F. Brizioli, Roberta Arcidiacono, E. Gushchin, P. Lubrano, T. Numao, Paolo Valente, Matthew Noy, R. W. L. Jones, M. Perrin-Terrin, M. Sozzi, Helen F Heath, Ilaria Neri, Y. Petrov, F. Hahn, Johannes Bernhard, Vincenzo Bonaiuto, T. Enik, Douglas Bryman, Sergei Fedotov, M. Lenti, F. Newson, N. A. Molokanova, R. Fantechi, N. De Simone, E. Pedreschi, G. Lamanna, S. Shkarovskiy, V. Palladino, A. Parenti, F. Spinella, A. Korotkova, A. Fucci, R. Lollini, Evgueni Goudzovski, M. Napolitano, E. Minucci, Georgi P. Georgiev, Viacheslav Duk, M. Mirra, F. Marchetto, Piero Vicini, Ernesto Migliore, C. Cerri, P. Lichard, A. M. Bragadireanu, S. Trilov, Roberto Ammendola, Cristina Biino, Mauro Raggi, B. Jenninger, S. Movchan, C. Lazzeroni, F. Ambrosino, M. Moulson, V. Fascianelli, Karol Kampf, V. Sugonyaev, Mario Giorgi, D. Di Filippo, L. Gatignon, S. Padolski, M. Corvino, D. Protopopescu, L. Bician, J. Swallow, Nicolas Lurkin, M. B. Brunetti, R. Aliberti, A. Norton, Andrea Biagioni, R. Volpe, A. Conovaloff, J. Kunze, M. Fiorini, D. Lomidze, O. Yushchenko, V. Kurshetsov, S. Kholodenko, B. Checcucci, P. Cooper, Paolo Massarotti, Rainer Wanke, E. Lari, A. Shaikhiev, Francesco Gonnella, Vladimir Kekelidze, Tomas Blazek, Mattia Barbanera, A. Cotta Ramusino, Jacopo Pinzino, S. Martellotti, V. Obraztsov, B. Angelucci, L. Iacobuzio, E. B. Holzer, Dave Britton, N. Estrada-Tristan, V. E. Semenov, A. Ceccucci, R. Page, Andrea Bizzeti, J. Jerhot, P. Petrov, H. D. Wahl, V. Cerny, E. Menichetti, A. Khotyantsev, D. Soldi, K. Massri, L. Fulton, F. Duval, Yu. G. Kudenko, A. Antonelli, L. Peruzzo, J. L. Fu, B. Bloch-Devaux, E. Imbergamo, S. Venditti, Z. Kucerova, Paul Laycock, S. Ghinescu, G. Lanfranchi, Centre de Physique des Particules de Marseille (CPPM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), NA62, European Commission, Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Ambrosino, F., Capussela, T., Corvino, M., Di Filippo, D., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: branching ratio: upper limit, K+: rare decay, NA62 experiment, 01 natural sciences, NA62, Settore FIS/04 - Fisica Nucleare e Subnucleare, High Energy Physics - Experiment, electron: pair production, High Energy Physics - Experiment (hep-ex), Economica, K+: branching ratio, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], K meson decay, Physics, Large Hadron Collider, Electroweak interaction, lcsh:QC1-999, muon: pair production, lepton number violation, K+: semileptonic decay, K+: secondary beam, Particle Physics - Experiment, Nuclear and High Energy Physics, Particle physics, CERN Lab, S010.46, FOS: Physical sciences, kaons, S010:Desig=46, +pi-+2muon%2B%22">K+ --> pi- 2muon+, Partícules (Física nuclear), PE2_2, Violació CP (Física nuclear), 0103 physical sciences, Kaon decays, lepton number violation, K meson, K meson decay, 010306 general physics, lepton number: violation, Kaon decays, Lepton Number Violation, hep-ex, 010308 nuclear & particles physics, S010:Desig=19, CERN SPS, K meson, Lepton number, +pi-+electron+positron%22">K+ --> pi- electron positron, Kaon Physics, Lepton Flavour Violation, S010.19, lcsh:Physics, experimental results
Abstract: The NA62 experiment at CERN reports a search for the lepton number violating decays K+ -> pi(-)e(+)e(+) and K+ -> pi(-)mu(+)mu(+) using a data sample collected in 2017. No signals are observed, and upper limits on the branching fractions of these decays of 2.2 x 10(-10) and 4.2 x 10(-11) are obtained, respectively, at 90% confidence level. These upper limits improve on previously reported measurements by factors of 3 and 2, respectively., It is a pleasure to express our appreciation to the staff of the CERN laboratory and the technical staffs of the participating laboratories and universities for their efforts in the operation of the experiment and data processing. The cost of the experiment and its auxiliary systems was supported by the funding agencies of the Collaboration Institutes. We are particularly indebted to: F.R.S.-FNRS (Fonds De La Recherche Scientifique - FNRS), Belgium; BMES (Ministry of Education, Youth and Science), Bulgaria; NSERC (Natural Sciences and Engineering Research Council), Canada; NRC (National Research Council Canada) contribution to TRIUMF, Canada; MEYS (Ministry of Education, Youth and Sports), Czech Republic; BMBF (Bundesministerium für Bildung und Forschung) contracts 05H12UM5, 05H15UMCNA and 05H18UMCNA, Germany; INFN (Istituto Nazionale di Fisica Nucleare), Italy; MIUR (Ministero dell'Istruzione, dell'Università e della Ricerca), Italy; CONACyT (Consejo Nacional de Ciencia y Tecnología), Mexico; IFA (Institute of Atomic Physics), Romania; INR-RAS (Institute for Nuclear Research of the Russian Academy of Sciences), Moscow, Russia; JINR (Joint Institute for Nuclear Research), Dubna, Russia; NRC (National Research Center) “Kurchatov Institute” and MESRF (Ministry of Education and Science of the Russian Federation), Russia; MESRS (Ministry of Education, Science, Research and Sport of the Slovak Republic), Slovakia; CERN (European Organization for Nuclear Research), Switzerland; STFC (Science and Technology Facilities Council), United Kingdom; NSF (National Science Foundation) Award Number 1506088, U.S.A.; ERC (European Research Council) “UniversaLepto” advanced grant 268062, “KaonLepton” starting grant 336581, Europe. Individuals have received support from: Charles University Research Center (UNCE/SCI/013), Czech Republic; Ministry of Education, Universities and Research (MIUR “Futuro in ricerca 2012” grant RBFR12JF2Z, Project GAP), Italy; Russian Foundation for Basic Research (RFBR grants 18-32-00072, 18-32-00245), Russia; the Royal Society (grants UF100308, UF0758946), United Kingdom; STFC (Rutherford fellowships ST/J00412X/1, ST/M005798/1), United Kingdom; ERC (grants 268062, 336581 and starting grant 802836 “AxScale”).
Published: 2019
Full Text: View/download PDF

33. Prospects forK+→π+νν‾observation at CERN in NA62

Author: G. Khoriauli, G. Aglieri Rinella, R. Aliberti, F. Ambrosino, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, I. Azhinenko, S. Balev, J. Bendotti, A. Biagioni, C. Biino, A. Bizzeti, T. Blazek, A. Blik, B. Bloch-Devaux, V. Bolotov, V. Bonaiuto, M. Bragadireanu, D. Britton, G. Britvich, F. Bucci, F. Butin, E. Capitolo, C. Capoccia, T. Capussela, V. Carassiti, N. Cartiglia, A. Cassese, A. Catinaccio, A. Cecchetti, A. Ceccucci, P. Cenci, V. Cerny, C. Cerri, B. Checcucci, O. Chikilev, R. Ciaranfi, G. Collazuol, A. Conovaloff, P. Cooke, P. Cooper, G. Corradi, E. Cortina Gil, F. Costantini, A. Cotta Ramusino, D. Coward, G. D'Agostini, J. Dainton, P. Dalpiaz, H. Danielsson, J. Degrange, N. De Simone, D. Di Filippo, L. Di Lella, N. Dixon, N. Doble, V. Duk, V. Elsha, J. Engelfried, T. Enik, V. Falaleev, R. Fantechi, V. Fascianelli, L. Federici, M. Fiorini, J. Fry, A. Fucci, L. Fulton, S. Gallorini, E. Gamberini, L. Gatignon, G. Georgiev, A. Gianoli, M. Giorgi, S. Giudici, L. Glonti, A. Goncalves Martins, F. Gonnella, E. Goudzovski, R. Guida, E. Gushchin, F. Hahn, B. Hallgren, H. Heath, F. Herman, D. Hutchcroft, E. Iacopini, E. Imbergamo, O. Jamet, P. Jarron, K. Kampf, J. Kaplon, V. Karjavin, V. Kekelidze, S. Kholodenko, A. Khudyakov, Yu. Kiryushin, K. Kleinknecht, A. Kluge, M. Koval, V. Kozhuharov, M. Krivda, Y. Kudenko, J. Kunze, G. Lamanna, C. Lazzeroni, R. Lenci, M. Lenti, E. Leonardi, P. Lichard, R. Lietava, L. Litov, D. Lomidze, A. Lonardo, N. Lurkin, D. Madigozhin, G. Maire, A. Makarov, C. Mandeiro, I. Mannelli, G. Mannocchi, A. Mapelli, F. Marchetto, R. Marchevski, S. Martellotti, P. Massarotti, K. Massri, P. Matak, E. Maurice, E. Menichetti, G. Mila, E. Minucci, M. Mirra, M. Misheva, N. Molokanova, J. Morant, M. Morel, M. Moulson, S. Movchan, D. Munday, M. Napolitano, I. Neri, F. Newson, A. Norton, M. Noy, G. Nuessle, V. Obraztsov, A. Ostankov, S. Padolski, R. Page, V. Palladino, A. Pardons, C. Parkinson, E. Pedreschi, M. Pepe, F. Perez Gomez, M. Perrin-Terrin, L. Peruzzo, P. Petrov, F. Petrucci, R. Piandani, M. Piccini, D. Pietreanu, J. Pinzino, M. Pivanti, I. Polenkevich, I. Popov, Yu. Potrebenikov, D. Protopopescu, F. Raffaelli, M. Raggi, P. Riedler, A. Romano, P. Rubin, G. Ruggiero, V. Russo, V. Ryjov, A. Salamon, G. Salina, V. Samsonov, C. Santoni, E. Santovetti, G. Saracino, F. Sargeni, S. Schifano, V. Semenov, A. Sergi, M. Serra, S. Shkarovskiy, D. Soldi, A. Sotnikov, V. Sougonyaev, M. Sozzi, T. Spadaro, F. Spinella, R. Staley, M. Statera, P. Sutcliffe, N. Szilasi, D. Tagnani, M. Valdata-Nappi, P. Valente, M. Vasile, T. Vassilieva, B. Velghe, M. Veltri, S. Venditti, R. Volpe, M. Vormstein, H. Wahl, R. Wanke, P. Wertelaers, A. Winhart, R. Winston, B. Wrona, O. Yushchenko, M. Zamkovsky, and A. Zinchenko
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Branching fraction, Physics beyond the Standard Model, 0103 physical sciences, Sensitivity (control systems), 010306 general physics, 01 natural sciences, Standard Model
Published: 2016
Full Text: View/download PDF

34. Search for $K^+ \to \pi^+ \nu \bar{\nu}$ at NA62

Author: F. Newson, Paul Laycock, S. Shkarovskiy, J. B. Dainton, L. Iacobuzio, Emilio Leonardi, I. Polenkevich, Yu. Kudenko, M. Medvedeva, F. Costantini, A. Mefodev, I. Mannelli, G. Lanfranchi, M. Perrin-Terrin, Tommaso Spadaro, Tomáš Husek, A. Salamon, D. T. Madigozhin, F. Brizioli, S. Movchan, C. Lazzeroni, F. Ambrosino, K. Massri, M. Lenti, Matteo Lupi, E. Cortina Gil, Roberto Piandani, G. Khoriauli, Paolo Valente, L. Bician, Luca Federici, J. Swallow, G. Saracino, Georgi P. Georgiev, J. R. Fry, Viacheslav Duk, C. Cerri, Dave Britton, N. Estrada-Tristan, Claudio Santoni, A. Filippi, S. Trilov, Roberto Ammendola, E. Imbergamo, A. Ceccucci, B. Checcucci, T. Capussela, Andrea Bizzeti, A. Gianoli, Christopher John Parkinson, M. Sozzi, Angelo Biagioni, J. L. Fu, N. Doble, D. Protopopescu, J. Pinzino, F. Spinella, Ilaria Neri, Vincenzo Bonaiuto, Vladimir Kekelidze, G. Anzivino, R. Lollini, Emilie Maurice, A. Conovaloff, Nicolas Lurkin, M. B. Brunetti, T. Enik, Douglas Bryman, Sergei Fedotov, E. Gamberini, R. Aliberti, H. D. Wahl, A. Norton, H. O. Danielsson, A. Sturgess, Ernesto Migliore, Vladimir Ryjov, D. Coward, V. Sougonyaev, A. Mapelli, Luca Pontisso, S. Giudici, P. Lubrano, P. S. Cooper, B. Angelucci, R. D. page, Alessandro Lonardo, G. Lamanna, M. Koval, S. Venditti, A. Shaikhiev, Yu. Potrebenikov, Giuseppe Latino, Francesco Gonnella, V. Kurochka, R. Guida, P. F. Dalpiaz, Tomas Blazek, M. Fiorini, L. Di Lella, V. Kozhuharov, J. Kunze, M. Zamkovsky, Cristina Biino, A. Cotta Ramusino, S. Ghinescu, Jürgen Engelfried, M. Bragadireanu, T. Numao, D. E. Hutchcroft, S. Padolski, A. Korotkova, N. A. Molokanova, O. Yushchenko, M. Napolitano, N. De Simone, V. Kurshetsov, Mauro Piccini, Fabrizio Petrucci, V. Falaleev, S. Martellotti, Leander Litov, A. Kleimenova, S. Kholodenko, B. Wrona, Paolo Massarotti, P. Petrov, M. Pepe, Mattia Barbanera, A. Fucci, M. Noy, A. Khotyantsev, M. Moulson, Karol Kampf, V. Cerny, Rainer Wanke, E. Menichetti, P. Rubin, L. Gatignon, M. Corvino, V. Obraztsov, V. E. Semenov, Evgueni Goudzovski, B. Velghe, B. Jenninger, Mario Giorgi, D. Di Filippo, G. Mannocchi, F. Hahn, R. Marchevski, Antonino Sergi, E. Minucci, D. Soldi, A.I. Zinchenko, V. Fascianelli, G. D'Agostini, G. Lehmann Miotto, C. Graham, Babette Döbrich, O. Hutanu, V. Palladino, F. Marchetto, Piero Vicini, P. Lichard, E. Iacopini, L. Fulton, F. Duval, David Lomidze, E. Pedreschi, M. Mirra, G. Ruggiero, M. Boretto, A. Romano, Fausto Sargeni, M. Vormstein, P. Cenci, A P Ostankov, R. Volpe, Roberta Arcidiacono, F. Bucci, E. Gushchin, Milena Misheva, R. Fantechi, A. Antonelli, L. Peruzzo, B. Bloch-Devaux, Mauro Raggi, Helen F Heath, and Z. Kucerova
Subjects: Physics, Particle physics, Branching fraction, Physics beyond the Standard Model, Pi, Nuclear Physics - Experiment, Sensitivity (control systems), Atomic physics, NA62 experiment, Measure (mathematics), Particle Physics - Experiment, Settore FIS/04 - Fisica Nucleare e Subnucleare, Bar (unit)
Abstract: The decay $K^{+} \rightarrow \pi^{+}\nu\overline{\nu}$ has a very precisely predicted branching ratio ($\sim 8\times 10^{-11}$) and it is one of the best candidates to reveal indirect effects of new physics. The NA62 experiment at CERN SPS is designed to measure the branching ratio of the $K^{+} \rightarrow \pi^{+}\nu\overline{\nu}$ with a decay-in-flight technique, novel for this channel. NA62 has taken data firstly in 2016 with the aim to reach the SM sensitivity. It has then collected 10 times more statistics in 2017 and a similar amount of data is expected from the 2018 run. The preliminary result on the full 2016 data set and the prospects for future developments are presented here.
Published: 2018
Full Text: View/download PDF

35. Search for heavy neutral lepton production in K+ decays

Author: K. Massri, L. Di Lella, M. Misheva, M. Perrin-Terrin, V. Sugonyaev, H. O. Danielsson, L. Peruzzo, S. Giudici, B. Bloch-Devaux, L. Bician, Luca Federici, J. Swallow, B. Wrona, E. Imbergamo, G. D'Agostini, M. Pepe, Luca Pontisso, R. Aliberti, J. R. Fry, V. Palladino, Francesco Gonnella, G. Saracino, O. Hutanu, F. Bucci, A. Norton, Tomas Blazek, A. Fucci, A. Cotta Ramusino, M. Boretto, A. Conovaloff, Z. Kucerova, D. Soldi, G. Mannocchi, P. Cenci, Piero Vicini, Vladimir Ryjov, I. Mannelli, A. Mefodev, Alessandro Lonardo, P. Lichard, S. Movchan, L. Gatignon, A. Mapelli, J. Kunze, F. Ambrosino, T. Numao, Paolo Valente, L. Fulton, F. Duval, F. Hahn, Paul Laycock, V. Kekelidze, E. Cortina Gil, A. Salamon, G. Khoriauli, A. Korotkova, M. Koval, M. Corvino, Jürgen Engelfried, Roberto Piandani, D. Coward, Dave Britton, N. Estrada-Tristan, G. Anzivino, Leander Litov, F. Brizioli, A. Kleimenova, A. Romano, Fausto Sargeni, M. Sozzi, D. Lomidze, Yu. G. Kudenko, Evgueni Goudzovski, S. Padolski, A P Ostankov, Matthew Noy, R. Fantechi, Ilaria Neri, P. Petrov, O. Yushchenko, Cristina Biino, Vincenzo Bonaiuto, Andrea Bizzeti, T. Enik, Douglas Bryman, Sergei Fedotov, Cristina Lazzeroni, D. Protopopescu, Nicolas Lurkin, M. B. Brunetti, A. Khotyantsev, B. Velghe, Mattia Barbanera, V. Kurochka, B. Jenninger, A. Antonelli, V. Kurshetsov, G. Lanfranchi, A. Zinchenko, S. Kholodenko, M. Vormstein, R. Wanke, P. F. Dalpiaz, Mario Giorgi, D. Di Filippo, B. Checcucci, V. Cerny, G. Latino, P. Cooper, Andrea Biagioni, R. Volpe, G. Lamanna, E. Gamberini, D. Madigozhin, Georgi P. Georgiev, Viacheslav Duk, E. Menichetti, V. Kozhuharov, M. Fiorini, S. Martellotti, M. Zamkovsky, A. Filippi, Roberto Ammendola, P. Lubrano, B. Angelucci, F. Spinella, R. Lollini, T. Spadaro, Ernesto Migliore, H. D. Wahl, M. Piccini, N. Doble, David Hutchcroft, S. Trilov, R. Page, E. Maurice, Helen F Heath, V. Obraztsov, A. Sturgess, N. De Simone, C. Cerri, V. E. Semenov, A. M. Bragadireanu, P. Rubin, Paolo Massarotti, M. Moulson, F. Marchetto, Karol Kampf, N. A. Molokanova, M. Napolitano, J. Pinzino, E. Iacopini, Mauro Raggi, J. L. Fu, S. Venditti, A. Shaikhiev, S. Ghinescu, Claudio Santoni, T. Capussela, A. Gianoli, Roberto Guida, F. Petrucci, Tomáš Husek, Yu. Potrebenikov, Matteo Lupi, R. Marchevski, Antonino Sergi, G. Lehmann Miotto, C. Graham, V. Falaleev, M. Lenti, Babette Döbrich, F. Newson, C. J. Parkinson, S. Shkarovskiy, E. Minucci, J. B. Dainton, V. Fascianelli, L. Iacobuzio, Emilio Leonardi, I. Polenkevich, M. Medvedeva, Roberta Arcidiacono, E. Gushchin, Giuseppe Ruggiero, A. Ceccucci, E. Pedreschi, M. Mirra, F. Costantini, Cortina Gil, E., Minucci, E., Padolski, S., Petrov, P., Velghe, B., Georgiev, G., Kozhuharov, V., Litov, L., Numao, T., Bryman, D., Fu, J., Husek, T., Kampf, K., Zamkovsky, M., Aliberti, R., Khoriauli, G., Kunze, J., Lomidze, D., Marchevski, R., Peruzzo, L., Vormstein, M., Wanke, R., Dalpiaz, P., Fiorini, M., Gamberini, E., Neri, I., Norton, A., Petrucci, F., Wahl, H., Cotta Ramusino, A., Gianoli, A., Iacopini, E., Latino, G., Lenti, M., Bizzeti, A., Bucci, F., Volpe, R., Antonelli, A., Gonnella, F., Lamanna, G., Lanfranchi, G., Mannocchi, G., Martellotti, S., Moulson, M., Raggi, M., Spadaro, T., Ambrosino, F., Capussela, T., Corvino, Michele, Di Filippo, D., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Anzivino, G., Brizioli, F., Imbergamo, E., Lollini, R., Santoni, C., Barbanera, M., Cenci, P., Checcucci, B., Duk, V., Lubrano, P., Lupi, M., Pepe, M., Piccini, M., Costantini, F., Di Lella, L., Doble, N., Giorgi, M., Giudici, S., Pedreschi, E., Sozzi, M., Cerri, C., Fantechi, R., Piandani, R., Pinzino, J., Pontisso, L., Spinella, F., Mannelli, I., D'Agostini, G., Biagioni, A., Leonardi, E., Lonardo, A., Valente, P., Vicini, P., Ammendola, R., Bonaiuto, V., De Simone, N., Federici, L., Fucci, A., Salamon, A., Sargeni, F., Arcidiacono, R., Bloch-Devaux, B., Boretto, M., Iacobuzio, L., Menichetti, E., Migliore, E., Soldi, D., Biino, C., Filippi, A., Marchetto, F., Engelfried, J., Estrada-Tristan, N., Bragadireanu, A. M., Ghinescu, S. A., Hutanu, O. E., Enik, T., Falaleev, V., Kekelidze, V., Korotkova, A., Madigozhin, D., Misheva, M., Molokanova, N., Movchan, S., Polenkevich, I., Potrebenikov, Yu., Shkarovskiy, S., Zinchenko, A., Fedotov, S., Gushchin, E., Khotyantsev, A., Kleimenova, A., Kudenko, Y., Kurochka, V., Medvedeva, M., Mefodev, A., Shaikhiev, A., Kholodenko, S., Kurshetsov, V., Obraztsov, V., Ostankov, A., Semenov, V., Sugonyaev, V., Yushchenko, O., Bician, L., Blazek, T., Cerny, V., Koval, M., Kucerova, Z., Ceccucci, A., Danielsson, H., Duval, F., Döbrich, B., Gatignon, L., Guida, R., Hahn, F., Jenninger, B., Laycock, P., Lehmann Miotto, G., Lichard, P., Mapelli, A., Noy, M., Palladino, V., Perrin-Terrin, M., Ruggiero, G., Ryjov, V., Venditti, S., Brunetti, M. B., Fascianelli, V., Goudzovski, E., Lazzeroni, C., Lurkin, N., Newson, F., Parkinson, C., Romano, A., Sergi, A., Sturgess, A., Swallow, J., Heath, H., Page, R., Trilov, S., Angelucci, B., Britton, D., Graham, C., Protopopescu, D., Dainton, J. B., Fry, J. R., Fulton, L., Hutchcroft, D., Massri, K., Maurice, E., Wrona, B., Conovaloff, A., Cooper, P., Coward, D., and Rubin, P.
Subjects: Nuclear and High Energy Physics, lepton, Pontecorvo–Maki–Nakagawa–Sakata matrix, heavy neutral leptons, neutrino mixing, FOS: Physical sciences, k meson, NA62 experiment, 01 natural sciences, neutrino mixing, Settore FIS/04 - Fisica Nucleare e Subnucleare, decay, High Energy Physics - Experiment, Nuclear physics, neutrino, High Energy Physics - Experiment (hep-ex), Minimum bias, Economica, Bounds, neutrinos, masses, tests, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, heavy neutral leptons, lepton, k meson, decay, neutrino, 010306 general physics, Nuclear Experiment, Physics, Range (particle radiation), Large Hadron Collider, 010308 nuclear & particles physics, hep-ex, High Energy Physics::Phenomenology, Ambientale, lcsh:QC1-999, High Energy Physics::Experiment, lcsh:Physics, Particle Physics - Experiment, Lepton
Abstract: A search for heavy neutral lepton production in $K^+$ decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015 is reported. Upper limits at the $10^{-7}$ to $10^{-6}$ level are established on the elements of the extended neutrino mixing matrix $|U_{\ell 4}|^2$ ($\ell=e,\mu$) for heavy neutral lepton mass in the range $170-448~{\rm MeV}/c^2$. This improves on the results from previous production searches in $K^+$ decays, setting more stringent limits and extending the mass range., Comment: Version accepted for publication in Phys.Lett.B (12/01/2018)
Published: 2018
Full Text: View/download PDF

36. Kl3 form factors with NA48/2 and NA62 status

Author: L. Iacobuzio, M. Sozzi, Emilio Leonardi, I. Polenkevich, L. Di Lella, Yu. Kudenko, Ilaria Neri, Vincenzo Bonaiuto, R. Page, E. Iacopini, T. Enik, Douglas Bryman, Sergei Fedotov, E. Minucci, G. Saracino, A.I. Zinchenko, K. Massri, V. Fascianelli, S. Padolski, O. Yushchenko, B. Wrona, D. Soldi, V. Kozhuharov, A. Mefodev, J. Kunze, Alessandro Lonardo, M. Zamkovsky, F. Spinella, S. Martellotti, R. Lollini, P. F. Dalpiaz, I. Mannelli, V. Obraztsov, M. Medvedeva, Ernesto Migliore, G. Anzivino, A. Conovalo, N. A. Molokanova, L. Bician, Luca Federici, J. Swallow, Claudio Santoni, A. Filippi, R. Fantechi, J. R. Fry, V. E. Semenov, T. Capussela, L. Fulton, F. Duval, David Lomidze, Mauro Piccini, V. Kurshetsov, S. Kholodenko, D. Coward, Jürgen Engelfried, V. Kurochka, R. Guida, Paul Laycock, Cristina Biino, Paolo Massarotti, M. Noy, A. Gianoli, F. Costantini, P. Petrov, Helen F Heath, M. Lenti, G. D'Agostini, H. O. Danielsson, M. Napolitano, Vladimir Ryjov, Mattia Barbanera, Evgueni Goudzovski, A. Salamon, M. Pepe, A. Mapelli, F. Bucci, Milena Misheva, Angelo Biagioni, Roberta Arcidiacono, Luca Pontisso, M. Perrin-Terrin, Tommaso Spadaro, S. Movchan, C. Lazzeroni, F. Ambrosino, Mauro Raggi, S. Giudici, F. Brizioli, O. Hutanu, G. Ruggiero, B. Angelucci, M. Koval, S. Venditti, G. Lanfranchi, J. Pinzino, E. Gushchin, E. Cortina Gil, Vladimir Kekelidze, N. De Simone, A. Shaikhiev, Francesco Gonnella, Yu. Potrebenikov, G. Lamanna, A. Romano, Fausto Sargeni, Roberto Piandani, P. S. Cooper, V. Cerny, Tomas Blazek, Giuseppe Latino, F. Newson, A. Fucci, A P Ostankov, A. Cotta Ramusino, M. Fiorini, A. Antonelli, R. Volpe, M. Boretto, G. Khoriauli, Georgi P. Georgiev, T. Numao, Viacheslav Duk, Tomáš Husek, S. Shkarovskiy, E. Menichetti, B. Velghe, L. Peruzzo, Rainer Wanke, P. Rubin, B. Bloch-Devaux, Roberto Ammendola, A. Sturgess, G. Mannocchi, D. T. Madigozhin, M. Moulson, M. Vormstein, P. Cenci, F. Marchetto, Piero Vicini, S. Ghinescu, H. D. Wahl, J. B. Dainton, David Hutchcroft, P. Lubrano, P. Lichard, F. Hahn, E. Pedreschi, Christopher John Parkinson, Matteo Lupi, B. Jenninger, A. Khotyantsev, Karol Kampf, Z. Kucerova, M. Mirra, R. Aliberti, A. Norton, J. L. Fu, Fabrizio Petrucci, Mario Giorgi, Paolo Valente, D. Di Filippo, E. Imbergamo, L. Gatignon, Leander Litov, M. Corvino, Dave Britton, N. Estrada-Tristan, A. Kleimenova, A. Ceccucci, B. Checcucci, Andrea Bizzeti, R. Piandani, M. Bragadireanu, D. Protopopescu, A. Korotkova, Emilie Maurice, Nicolas Lurkin, M. B. Brunetti, V. Sougonyaev, V. Falaleev, E. Gamberini, R. Marchevski, Antonino Sergi, G. Lehmann Miotto, C. Graham, Babette Döbrich, V. Palladino, C. Cerri, S. Trilov, N. Doble, Piandani, Roberto, Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., Anzivino, G., Arcidiacono, R., Barbanera, M., Biagioni, A., Bician, L., Biino, C., Bizzeti, A., Blazek, T., Bloch-Devaux, B., Bonaiuto, V., Boretto, M., Bragadireanu, M., Britton, D., Brizioli, F., Brunetti, M. B., Bryman, D., Bucci, F., Capussela, T., Ceccucci, A., Cenci, P., Cerny, V., Cerri, C., Checcucci, B., Conovalo, A., Cooper, P., Gil, E. Cortina, Corvino, M., Costantini, F., Ramusino, A. Cotta, Coward, D., D'Agostini, G., Dainton, J., Dalpiaz, P., Danielsson, H., De Simone, N., Di Filippo, D., Di Lella, L., Doble, N., Dobrich, B., Duval, F., Duk, V., Engelfried, J., Enik, T., Estrada-Tristan, N., Falaleev, V., Fantechi, R., Fascianelli, V., Federici, L., Fedotov, S., Filippi, A., Fiorini, M., Fry, J., Fu, J., Fucci, A., Fulton, L., Gamberini, E., Gatignon, L., Georgiev, G., Ghinescu, S., Gianoli, A., Giorgi, M., Giudici, S., Gonnella, F., Goudzovski, E., Graham, C., Guida, R., Gushchin, E., Hahn, F., Heath, H., Husek, T., Hutanu, O., Hutchcroft, D., Iacobuzio, L., Iacopini, E., Imbergamo, E., Jenninger, B., Kampf, K., Kekelidze, V., Kholodenko, S., Khoriauli, G., Khotyantsev, A., Kleimenova, A., Korotkova, A., Koval, M., Kozhuharov, V., Kucerova, Z., Kudenko, Y., Kunze, J., Kurochka, V., Kurshetsov, V., Lanfranchi, G., Lamanna, G., Latino, G., Laycock, P., Lazzeroni, C., Lenti, M., Miotto, G. Lehmann, Leonardi, E., Lichard, P., Litov, L., Lollini, R., Lomidze, D., Lonardo, A., Lubrano, P., Lupi, M., Lurkin, N., Madigozhin, D., Mannelli, I., Mannocchi, G., Mapelli, A., Marchetto, F., Marchevski, R., Martellotti, S., Massarotti, P., Massri, K., Maurice, E., Medvedeva, M., Mefodev, A., Menichetti, E., Migliore, E., Minucci, E., Mirra, M., Misheva, M., Molokanova, N., Moulson, M., Movchan, S., Napolitano, M., Neri, I., Newson, F., Norton, A., Noy, M., Numao, T., Obraztsov, V., Ostankov, A., Padolski, S., Page, R., Palladino, V., Parkinson, C., Pedreschi, E., Pepe, M., Perrin-Terrin, M., Peruzzo, L., Petrov, P., Petrucci, F., Piandani, R., Piccini, M., Pinzino, J., Polenkevich, I., Pontisso, L., Potrebenikov, Yu., Protopopescu, D., Raggi, M., Romano, A., Rubin, P., Ruggiero, G., Ryjov, V., Salamon, A., Santoni, C., Saracino, G., Sargeni, F., Semenov, V., Sergi, A., Shaikhiev, A., Shkarovskiy, S., Soldi, D., Sougonyaev, V., Sozzi, M., Spadaro, T., Spinella, F., Sturgess, A., Swallow, J., Trilov, S., Valente, P., Velghe, B., Venditti, S., Vicini, P., Volpe, R., Vormstein, M., Wahl, H., Wanke, R., Wrona, B., Yushchenko, O., Zamkovsky, M., and Zinchenko, A.
Subjects: Physics and Astronomy (all), General Physics and Astronomy, Settore FIS/04 - Fisica Nucleare e Subnucleare
Abstract: The NA48/2 experiment at CERN collected a very large sample of charged kaon decays into multiple final states. These data allow measurements related to QCD. We obtained our final measurement of the charged kaon semileptonic decays form factors based on 4.28 million Ke3 and 2.91 million Kμ3 selected decays, with the smallest uncertainty for Ke3 and a competitive result for Kμ3 and leading to the most precise combined Kl3 result coming from the kaon sector that reduces the form factor uncertainty of/Vus/. The NA62 experiment at CERN SPS is designed to measure the branching ratio of the K+ → π+νν decay with 10% precision. K → πνν is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches. NA62 took data in 2015-2017; the analysis of a partial data set allows to reach the Standard Model sensitivity. The status of the experiments will be presented.
Published: 2018

37. Detailed study of Ke4 decay properties by the NA48/2 experiment at CERN

Author: M. Zamkovsky
Subjects: Physics, Quantum chromodynamics, form factor, ChPT, Nuclear and High Energy Physics, Particle physics, Chiral perturbation theory, Large Hadron Collider, 010308 nuclear & particles physics, Branching fraction, Form factor (quantum field theory), 01 natural sciences, scattering lengths, Nuclear physics, Low energy, Isospin, 0103 physical sciences, Nuclear Physics - Experiment, High Energy Physics::Experiment, Symmetry breaking, kaon, branching ratio, 010306 general physics
Abstract: A sample of 1.13 million K e4 + − ( K ± → π + π − e ± ν ) decays and 65210 K e4 00 ( K ± → π 0 π 0 e ± ν ) decays has been collected in 2003–2004 by the NA48/2 collaboration at the CERN SPS. Branching ratio and form factors in the S- and P-wave have been measured at a percent level precision. The comparison of Branching ratio and form factor values in both modes sheds new light on isospin symmetry breaking effects. Form factor measurements are major inputs to the study of low energy QCD and bring stringent tests of Chiral Perturbation Theory predictions.
Published: 2016
Full Text: View/download PDF

38. $K\to\pi\nu\nu$ at NA62

Author: G. Anzivino, J. Morant, N. Estrada, N Desimone, G. Paoluzzi, C. Capoccia, Kekelidze, P. Wertelaers, Semenov, P. Sutcliffe, E. Iacopini, M. Lenti, F. Marchetto, Piero Vicini, T Jones KKampf, Christopher John Parkinson, M. Veltri, G. Corradi, Cerny, D. Pietreanu, Pierre Jarron, A An tonelli, P. Lichard, M. Fiorini, Marian Krivda, F. Bucci, T. Numao, D. Tagnani, Milena Misheva, R. Fantechi, Evgueni Goudzovski, Yu. Kiryushin, H. D. Wahl, G. Maire, R. Aliberti, A. Norton, Roland Winston, P. Petrov, Petra Riedler, N. Doble, D. Soldi, E. Cortina Gil, B. Velghe, Roberto Piandani, S. Chiozzi, F. Cotorobai, Mauro Raggi, I. O. Skillicorn, L. Fulton, A. Mapelli, David Lomidze, L. Di Lella, L. Bician, Luca Federici, G. D'Agostini, F. Perez Gomez, Likhacheva, E. Capitolo, Mauro Piccini, J. Degrange, Elsha, J. Kaplon, M. Pepe, Paolo Massarotti, R. Page, S. Giudici, Mario Giorgi, Rainer Wanke, D. Di Filippo, A. Sturgess, B. Wrona, A. Fucci, P. Rubin, L. Peruzzo, R. Guida, G. Salina, Andrea Catinaccio, G. Mannocchi, O. Hutanu, A. Goncalves Martins, Georgi P. Georgiev, A. Winhart, Bonaiuto, Z. Kucerova, A. Conovaloff, S. Balev, A. Khudyakov, M. Boretto, Paolo Valente, F. Hahn, A Khotyant sev, Dave Britton, F. Newson, A. Ceccucci, B. Checcucci, Andrea Bizzeti, Roberto Ammendola, S. Shkarovskiy, M. Zamkovsky, J. Kunze, Roberto Ciaranfi, J. B. Dainton, Helen F Heath, J. R. Fry, J. L. Fu, M Valdata Nappi, M. Vormstein, P. Cenci, I. Azhinenko, N. A. Molokanova, G. Ruggiero, J. Noël, M. Koval, S. Venditti, A. Shaikhiev, R. Lenci, Samsonov, A. Salamon, Mattia Barbanera, G. Khoriauli, H. O. Danielsson, A. Romano, Fausto Sargeni, M. Serra, F. Herman, G. Collazuol, M. Napolitano, S. Gallorini, M. Medvedeva, J. Calvo, A P Ostankov, M. Vasile, G. Lamanna, S. Ghinescu, R. Volpe, M. Bragadireanu, P. S. Cooper, J. Pinzino, D. J. Munday, T. Vassilieva, F. Costantini, Mb Brunetti, Fabrizio Petrucci, Luca Pontisso, Francesco Gonnella, Tomas Blazek, A. Cotta Ramusino, D. E. Hutchcroft, Leander Litov, S. Padolski, L. Iacobuzio, O. Yushchenko, Konrad Kleinknecht, Emilio Leonardi, I. Polenkevich, A. Kleimenova, S. Kholodenko, A. Sotnikov, D. Coward, Palladino, G. Britvich, Yu. Kudenko, P.A. Cooke, S. Galeotti, Claudio Santoni, Sugonyaev, B. Angelucci, Alexander Kluge, B. Hallgren, A. Cecchetti, F. Spinella, R. Lollini, Ernesto Migliore, A. Filippi, Roberta Arcidiacono, E. Gushchin, Fascianelli, M. Moulson, Kozhuharov, B Bloch Devaux, M. Sozzi, E. Pedreschi, E. Jones, M. Mirra, L. Glonti, Ilaria Neri, T. Enik, Douglas Bryman, Sergei Fedotov, Alessandro Lonardo, K. J. McCormick, Cristina Biino, J. Bendotti, A. Gianoli, Angelo Biagioni, F. Butin, O. Chikilev, P. F. Dalpiaz, N. Szilasi, Jürgen Engelfried, N. Dixon, Tomáš Husek, R.J. Staley, E. Imbergamo, Bolotov, Russo, T Capus sela, D. T. Madigozhin, Duk, Antonio Cassese, C. Cerri, Matteo Lupi, S. Martellotti, S. Trilov, Yu. Potrebenikov, C. Mandeiro, Giuseppe Latino, A. Blik, E. Gamberini, F. Raffaelli, M. Noy, G. Lehmann Miotto, Babette Döbrich, Obraztsov, L. Gatignon, Tommaso Spadaro, S. Di Lorenzo, R. Lietava, E. Minucci, A.I. Zinchenko, R. Marchevski, Antonino Sergi, M Perrin Terrin, G. Aglieri Rinella, A. Mefodev, I. Mannelli, S. Movchan, C. Lazzeroni, F. Ambrosino, K. Massri, Falaleev, D. Protopopescu, Emilie Maurice, Nicolas Lurkin, Ryjov, G. Nuessle, O. Jamet, M. Morel, E. Menichetti, P. Matak, and G. Saracino
Subjects: Physics, Particle physics, Pi
Published: 2017
Full Text: View/download PDF

39. Neutral pion form factor measurement by the NA62 experiment

Author: Fabrizio Petrucci, A. Gonidec, Leander Litov, A. Romano, G. Collazuol, P.L. Frabetti, M. Scarpa, M. Hita-Hochgesand, Marco Clemencic, V K Semenov, F. Retire, S. Balev, M. Martini, V. Obraztsov, V. Kozhuharov, B. Hallgren, V. Falaleev, I. Mannelli, Rainer Wanke, M. Shieh, M. Zamkovsky, Alan W. Walker, Roberto Piandani, P. Rubin, Jacqueline Batley, Mark Slater, N. A. Molokanova, Peter Zahariev Hristov, F. Marchetto, N. Doble, O. Yushchenko, A. Winhart, L. Widhalm, L. Masetti, A. Peters, K. Eppard, M. Napolitano, G. Dellacasa, Vladimir Kekelidze, Evgueni Goudzovski, Tomas Blazek, E. C. Swallow, U. Moosbrugger, Antonino Sergi, A. Cotta Ramusino, Evgeny Gushchin, S. Movchan, H. D. Wahl, Simone Bifani, M. Fidecaro, F. Ambrosino, Andreas Alexander Maier, P. F. Dalpiaz, M. Moulson, F. Costantini, B. Peyaud, E. Iacopini, M. C. Petrucci, Petra Riedler, Mauro Piccini, P. Marouelli, A. Michetti, Konrad Kleinknecht, Paolo Massarotti, C. Damiani, T. Spadaro, T. Numao, G. D'Agostini, Ivan Mikulec, V. Palladino, Paolo Valente, M. Veltri, D. Coward, Anne Dabrowski, Viacheslav Duk, G. Lamanna, G. Marel, Emilio Leonardi, M. Pepe, M. Valdata-Nappi, M. Ziolkowski, I. Polenkevich, M. D. Wood, Jürgen Engelfried, Emmanuel Monnier, R. Fantechi, A.I. Zinchenko, M. Markytan, M. Lenti, Milene Calvetti, F. Bucci, A. Ceccucci, M. Holder, H. O. Danielsson, Milena Misheva, Andrea Bizzeti, M. Koval, S. Venditti, V. Bolotov, S. A. Wotton, C. Cerri, H. Dibon, Wander Baldini, G. Bocquet, Yu. Potrebenikov, J. Derr, Cristina Lazzeroni, M. Savri, E. Imbergamo, Maulik R. Patel, A. Antonelli, Mauro Raggi, C. Morales Morales, D. Di Filippo, J. B. Chze, S. Shkarovskiy, T. Fonseca Martin, S. Goy Lopez, A. Salamon, M. Serra, A. Norton, Roland Winston, Massimiliano Fiorini, S. Gallorini, V. Kurshetsov, Nicolo Cartiglia, Stoyan Stoynev, W. Kubischta, D. J. Munday, S. Giudici, M. Sozzi, L. DiLella, Cristina Biino, M. De Beer, M. Wache, D. T. Madigozhin, E. Mazzucato, P. Cenci, M. Behler, Roberta Arcidiacono, Michal Szleper, Nicola Cabibbo, B. Bloch-Devaux, G.E. Kalmus, A. Nappi, Mayda Velasco, Cvetan Valeriev Cheshkov, G. Saracino, E. Gersabeck, B. Renk, Manfred Jeitler, A. Gianoli, G.M. Pierazzini, G. Anzivino, A. Fucci, Lidia Fiorini, B. Vallage, L. Gatignon, I. Popov, G. Neuhofer, D.C. Cundy, Nicolas Lurkin, G. Ruggiero, Zamkovsky, Michal, Ambrosino, F., Antonelli, A., Anzivino, G., Arcidiacono, R., Baldini, W., Balev, S., Batley, J. R., Behler, M., Bifani, S., Biino, C., Bizzeti, A., Blazek, T., Bloch-Devaux, B., Bocquet, G., Bolotov, V., Bucci, F., Cabibbo, N., Calvetti, M., Cartiglia, N., Ceccucci, A., Cenci, P., Cerri, C., Cheshkov, C., Chze, J. B., Clemencic, M., Collazuol, G., Costantini, F., Cotta Ramusino, A., Coward, D., Cundy, D., Dabrowski, A., Dagostini, G., Dalpiaz, P., Damiani, C., Danielsson, H., De Beer, M., Dellacasa, G., Derr, J., Dibon, H., Di Filippo, D., Dilella, L., Doble, N., Duk, V., Engelfried, J., Eppard, K., Falaleev, V., Fantechi, R., Fidecaro, M., Fiorini, L., Fiorini, M., Fonseca Martin, T., Frabetti, P. L., Fucci, A., Gallorini, S., Gatignon, L., Gersabeck, E., Gianoli, A., Giudici, S., Gonidec, A., Goudzovski, E., Goy Lopez, S., Gushchin, E., Hallgren, B., Hita-Hochgesand, M., Holder, M., Hristov, P., Iacopini, E., Imbergamo, E., Jeitler, M., Kalmus, G., Kekelidze, V., Kleinknecht, K., Koval, M., Kozhuharov, V., Kubischta, W., Kurshetsov, V., Lamanna, G., Lazzeroni, C., Lenti, M., Leonardi, E., Litov, L., Lurkin, N., Madigozhin, D., Maier, A., Mannelli, I., Marchetto, F., Marel, G., Markytan, M., Marouelli, P., Martini, M., Masetti, L., Massarotti, P., Mazzucato, E., Michetti, A., Mikulec, I., Misheva, M., Molokanova, N., Monnier, E., Moosbrugger, U., Morales Morales, C., Moulson, M., Movchan, S., Munday, D. J., Napolitano, M., Nappi, A., Neuhofer, G., Norton, A., Numao, T., Obraztsov, V., Palladino, V., Patel, M., Pepe, M., Peters, A., Petrucci, F., Petrucci, M. C., Peyaud, B., Piandani, R., Piccini, M., Pierazzini, G., Polenkevich, I., Popov, I., Potrebenikov, Y., Raggi, M., Renk, B., Retire, F., Riedler, P., Romano, A., Rubin, P., Ruggiero, G., Salamon, A., Saracino, G., Savri, M., Scarpa, M., Semenov, V., Sergi, A., Serra, M., Shieh, M., Shkarovskiy, S., Slater, M. W., Sozzi, M., Spadaro, T., Stoynev, S., Swallow, E., Szleper, M., Valdata-Nappi, M., Valente, P., Vallage, B., Velasco, M., Veltri, M., Venditti, S., Wache, M., Wahl, H., Walker, A., Wanke, R., Widhalm, L., Winhart, A., Winston, R., Wood, M. D., Wotton, S. A., Yushchenko, O., Zinchenko, A., and Ziolkowski, M.
Subjects: Physics, History, Particle physics, 02 Physical Sciences, Meson, 010308 nuclear & particles physics, Nuclear Theory, Form factor (quantum field theory), Elementary particle, NA62 experiment, 01 natural sciences, 09 Engineering, Dark photon, Computer Science Applications, Education, Nuclear physics, Physics and Astronomy (all), Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Lepton, Dimensionless quantity
Abstract: The NA62 experiment at CERN collected a large sample of charged kaon decays with a highly efficient trigger for decays into electrons in 2007. The kaon beam represents a source of tagged neutral pion decays in vacuum. A measurement of the electromagnetic transition form factor slope of the neutral pion in the time-like region from ∼1 million fully reconstructed π 0 Dalitz decay is presented. The limits on dark photon production in π 0 decays from the earlier kaon experiment at CERN, NA48/2, are also reported.
Published: 2017

40. Search for exotics at NA62

Author: Aliberti, R, Ambrosino, F, Ammendola, R, Angelucci, B, Antonelli, A, Anzivino, G, Arcidiacono, R, Barbanera, M, Biagioni, A, Bician, L, Biino, C, Bizzeti, A, Blazek, T, Bloch-Devaux, B, Bonaiuto, V, Mboretto, M, Britton, D, Brizioli, F, Brunetti, M, Bryman, D, Bucci, F, Capussela, T, Ceccucci, A, Cenci, P, Cerny, V, Cerri, C, Checcucci, B, Conovaloff, A, Cooper, P, E Cortina Gil, Corvino, M, Costantini, F, A Cotta Ramusino, Coward, D, Dagostini, G, Dainton, J, Dalpiaz, P, Danielsson, H, N De Simone, D Di Filippo, L Di Lella, Doble, N, Dobrich, B, Duval, F, Duk, V, Engelfried, J, Enik, T, Estrada-Tristan, N, Falaleev, V, Fantechi, R, Fascianelli, V, Federici, L, Fedotov, S, Filippi, A, Fiorini, M, Fry, J, J, F, Fucci, A, Fulton, L, Gamberini, E, Gatignon, L, Georgiev, G, Ghinescu, S, Gianoli, A, Giorgi, M, Giudici, S, Gonnella, F, Goudzovski, E, Graham, C, Guida, R, Gushchin, E, Hahn, F, Heath, H, Husek, T, Hutanu, O, Hutchcroft, D, Iacobuzio, L, Iacopini, E, Imbergamo, E, Jenninger, B, Kampf, K, Kekelidze, V, Kholodenko, S, Khoriauli, G, Khotyantsev, A, Kleimenova, A, Korotkova, A, Koval, M, Kozhuharov, V, Kucerova, Z, Kudenko, Y, Kunze, J, Kurochka, V, Kurshetsov, V, Lanfranchi, G, Lamanna, G, Latino, G, Laycock, P, Lazzeroni, C, Lenti, M, G Lehmann Miotto, P Lichard, E, Litov, L, Lollini, R, Lomidze, D, Lonardo, A, Lubrano, P, Lupi, M, Lurkin, N, Madigozhin, D, Mannelli, I, Mannocchi, G, Mapelli, A, Marchetto, F, Marchevski, R, Martellotti, S, Massarotti, P, Massri, K, Maurice, E, Medvedeva, M, Mefodev, A, Menichetti, E, Migliore, E, Minucci, E, Mirra, M, Misheva, M, Molokanova, N, Moulson, M, Movchan, S, Napolitano, M, Neri, I, Newson, F, Norton, A, Noy, M, Numao, T, Obraztsov, V, Ostankov, A, Padolski, S, Page, R, Palladino, V, Parkinson, C, Pedreschi, E, Mpepe, M, Peruzzo, L, Petrov, P, Petrucci, F, Piandani, R, Piccini, M, Pinzino, J, Polenkevich, I, Pontisso, L, Potrebenikov, Y, Protopopescu, D, Raggi, M, Romano, A, Rubin, P, Ruggiero, G, Ryjov, V, Salamon, A, Santoni, C, Saracino, G, Sargeni, F, Semenov, V, Sergi, A, Shaikhiev, A, Shkarovskiy, S, Soldi, D, Sougonyaev, V, Sozzi, M, Spadaro, T, Spinella, F, Sturgess, A, Swallow, J, Trilov, S, Valente, P, Velghe, B, Venditti, S, Vicini, P, Volpe, R, Vormstein, M, Wahl, H, Rwanke, B, Yushchenko, O, and M Zamkovsky and, Az
Subjects: Physics, History, High Energy Physics::Experiment, Nuclear Physics - Experiment, Particle Physics - Experiment, Settore FIS/04 - Fisica Nucleare e Subnucleare, Computer Science Applications, Education
Abstract: Fixed target experiments are a particularly useful tool in the search of very weakly coupled particles in the MeV-GeV range, which are of interest as potential dark matter mediators. Owing to the high beam energy and a hermetic detector coverage, NA62 also has the opportunity to directly search for a variety of long-lived beyond the Standard Model particles, such as axion-like particles and dark photons. Furthermore, the large sample of K + decays available at NA62 allows a rich program for rare and forbidden decay studies. In this paper the status of these searches is reviewed, giving prospects for future data taking at NA62.
Published: 2019
Full Text: View/download PDF

41. Recent results and prospects for NA62 experiment

Author: G. Paoluzzi, Pierre Jarron, Marian Krivda, G. Ruggiero, Christopher John Parkinson, M. Veltri, Evgueni Goudzovski, E. Pedreschi, Alexander Kluge, R. Aliberti, A. Romano, Fausto Sargeni, G. Collazuol, A. Norton, Roland Winston, F. Bucci, A. Cecchetti, E. Jones, M. Mirra, Milena Misheva, A P Ostankov, E. Minucci, F. Spinella, R. Lollini, L. Glonti, P. S. Cooper, T. Spadaro, Alessandro Lonardo, L. Peruzzo, B. Bloch-Devaux, G. Salina, Andrea Catinaccio, A. Antonelli, Francesco Gonnella, R. Volpe, Z. Kucerova, V. Russo, B. Velghe, K. J. McCormick, H. O. Danielsson, F. Costantini, Tomas Blazek, A.I. Zinchenko, A. Sturgess, D. Soldi, A. Cotta Ramusino, E. Gamberini, F. Marchetto, Piero Vicini, G. Mannocchi, V. Fascianelli, S. Movchan, C. Lazzeroni, F. Ambrosino, M. Bragadireanu, A. Khudyakov, Paolo Valente, E. Capitolo, S. Chiozzi, A. Fucci, L. Fulton, David Lomidze, Luca Pontisso, S. Padolski, O. Yushchenko, P. Lichard, R. Marchevski, Antonino Sergi, F. Raffaelli, P. Sutcliffe, M. Koval, S. Venditti, A. Shaikhiev, F. Cotorobai, Lau Gatignon, M. Boretto, C. Capoccia, O. Chikilev, S. Kholodenko, Tomáš Husek, F. Hahn, A. Mefodev, Andrea Biagioni, D. Pietreanu, B. Angelucci, M. Fiorini, E. Iacopini, V. Falaleev, Dave Britton, J. R. Fry, M. Lenti, G. Lamanna, P.A. Cooke, K. Massri, A. Goncalves Martins, I. Mannelli, T. Numao, D. Tagnani, L. Iacobuzio, Emilio Leonardi, A. Ceccucci, B. Checcucci, Cristina Biino, Andrea Bizzeti, M. Vormstein, V. Palladino, D. T. Madigozhin, P. Cenci, V. Samsonov, M. Sozzi, I. Polenkevich, A. Khotyantsev, V. Elsha, V. Bolotov, J. Degrange, J. Kaplon, V. Obraztsov, R. Fantechi, Yu. Kudenko, L. Di Lella, Ilaria Neri, N. Dixon, R. Guida, N. Estrada, Antonio Cassese, Mario Giorgi, G. Lehmann-Miotto, S. Martellotti, Vincenzo Bonaiuto, D. Di Filippo, P. Petrov, T. Enik, Douglas Bryman, Mauro Piccini, Sergei Fedotov, Roberta Arcidiacono, David Hutchcroft, T. Capussela, R.J. Staley, E. Imbergamo, Paolo Massarotti, Konrad Kleinknecht, Mattia Barbanera, E. Cortina Gil, Vladimir Ryjov, J. Bendotti, Yu. Kiryushin, D. J. Munday, T. Vassilieva, P. F. Dalpiaz, V K Semenov, N. De Simone, L. Bician, Luca Federici, E. Gushchin, Matteo Lupi, R. Lenci, F. Perez Gomez, A. Sotnikov, R. Page, P. Wertelaers, Claudio Santoni, Vladimir Kekelidze, F. Newson, C. Cerri, A. Mapelli, Yu. Potrebenikov, S. Trilov, D. Coward, M. Perrin-Terrin, C. Mandeiro, B. Wrona, Giuseppe Latino, F. Herman, M. Valdata-Nappi, S. Shkarovskiy, Mauro Raggi, N. Szilasi, G. D'Agostini, Babette Döbrich, Roberto Piandani, V. Kozhuharov, H. D. Wahl, N. Doble, M. Zamkovsky, S. Giudici, Georgi P. Georgiev, Viacheslav Duk, J. B. Dainton, Jürgen Engelfried, G. Maire, A. Gianoli, Roberto Ammendola, M. Pepe, Roberto Ciaranfi, V. Cerny, A. Conovaloff, S. Balev, F. Butin, M. Morel, Helen F Heath, A. Salamon, G. Khoriauli, M. Serra, Rainer Wanke, E. Menichetti, P. Matak, G. Saracino, Petra Riedler, S. Gallorini, P. Rubin, J. L. Fu, O. Hutanu, M. Vasile, I. O. Skillicorn, S. Di Lorenzo, R. Lietava, A. Winhart, G. Aglieri Rinella, A. Blik, M. Noy, G. Anzivino, J. Morant, G. Corradi, M. Moulson, Karol Kampf, J. Kunze, I. Azhinenko, N. A. Molokanova, M. Napolitano, J. Pinzino, Fabrizio Petrucci, Leander Litov, A. Kleimenova, G. Britvich, S. Galeotti, B. Hallgren, D. Protopopescu, Emilie Maurice, Nicolas Lurkin, M. B. Brunetti, V. Sougonyaev, G. Nuessle, O. Jamet, Ambrosino, F., Corvino, M., Massarotti, P., Mirra, M., Napolitano, M., and Saracino, G.
Subjects: Accelerator Physics (physics.acc-ph), Nuclear and High Energy Physics, Particle physics, Physics - Instrumentation and Detectors, Meson, Physics beyond the Standard Model, Measure (physics), Physics - Accelerator Physics, FOS: Physical sciences, kaons, NA62 experiment, 01 natural sciences, NA62, Settore FIS/04 - Fisica Nucleare e Subnucleare, Nuclear physics, rare decays, 0103 physical sciences, Detectors and Experimental Techniques, 010306 general physics, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Instrumentation and Detectors (physics.ins-det), Kaon physics, CERN SPS, High Energy Physics::Experiment, kaon
Abstract: The $K^+\rightarrow \pi^+ \nu \bar \nu$ decay is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches. The NA62 experiment at CERN is designed to measure the branching ratio (BR) of this decay with 10\% precision. NA62 has been successfully launched in October 2014, took data in pilot runs in 2014 and 2015 reaching the final designed beam intensity. The NA62 experimental setup is illustrated and quality of data acquired in view of the final measurement is reported. The $K^+\rightarrow \pi^+ \nu \bar \nu$ decay is theoretically one of the cleanest meson decays and so a good place to look for indirect effects of new physics complementary to LHC searches. The NA62 experiment at CERN is designed to measure the branching ratio of this decay with 10\% precision. NA62 was commissioned in October 2014, took data in pilot runs in 2014 and 2015. The NA62 experimental setup is illustrated and data quality is reported. The K+→π+νν‾ decay is theoretically one of the cleanest meson decays and so a good place to look for indirect effects of new physics complementary to LHC searches. The NA62 experiment at CERN is designed to measure the branching ratio of this decay with 10% precision. NA62 was commissioned in October 2014, took data in pilot runs in 2014 and 2015. The NA62 experimental setup is illustrated and data quality is reported.
Published: 2016

42. Prospects for $K^+\rightarrow \pi^+ \nu \bar\nu$ observation at CERN in NA62

Author: R. Fantechi, J. R. Fry, C. Capoccia, M. Lenti, E. Cortina Gil, A. Goncalves Martins, A. Fucci, B. Bloch-Devaux, G. Salina, Andrea Catinaccio, T. Capussela, A. Gianoli, G. Mannocchi, Alexander Kluge, A. Pardons, D. E. Hutchcroft, S. Padolski, O. Yushchenko, E. Santovetti, Konrad Kleinknecht, Emilio Leonardi, I. Polenkevich, Rainer Wanke, R. Lenci, Samsonov, F. Butin, A. Cecchetti, F. Spinella, J. Kunze, A. Sotnikov, Kekelidze, Yu. Kudenko, P. Rubin, A. Winhart, F. Herman, Russo, D. T. Madigozhin, Duk, I. Azhinenko, N. A. Molokanova, D. Coward, M. Valdata-Nappi, P. Wertelaers, Mauro Raggi, S. Kholodenko, Cerny, L Di Lella, A. I. Makarov, F. Hahn, Yu. Potrebenikov, Alessandro Lonardo, O. Chikilev, Antonio Cassese, L. Gatignon, Vassilieva, Nicolo Cartiglia, Palladino, G. Lamanna, M. Fiorini, G Aglieri Rinella, M. Napolitano, P. F. Dalpiaz, P.A. Cooke, A. Blik, Carassiti, L. Fulton, David Lomidze, I. Mannelli, H. D. Wahl, G. Maire, M. Noy, P. S. Cooper, P. Sutcliffe, I. Popov, D. J. Munday, D. Tagnani, Mauro Piccini, Elsha, Marcello Pivanti, F. Newson, Semenov, E. Iacopini, S. Shkarovskiy, J. Pinzino, Fabrizio Petrucci, Roberta Arcidiacono, M. Zamkovsky, Cristina Biino, J. Degrange, J. Kaplon, D. Di Filippo, Leander Litov, Petra Riedler, Paolo Massarotti, G. Britvich, Francesco Gonnella, Tomas Blazek, G. Mazza, R. Lietava, N. De Simone, Roberto Ciaranfi, Helen F Heath, F. Bucci, Milena Misheva, A. Cotta Ramusino, M. Bragadireanu, J. B. Dainton, N. Szilasi, Karjavin, Jürgen Engelfried, H. O. Danielsson, N. Dixon, E. Gushchin, A. Khudyakov, Paolo Valente, Sebastiano Fabio Schifano, P. Petrov, P. Matak, M. Perrin-Terrin, G. Saracino, Tommaso Spadaro, A. Antonelli, R.J. Staley, G. D'Agostini, Sougonyaev, Pierre Jarron, B. Hallgren, F. Costantini, Bolotov, D. Protopopescu, M. Koval, S. Venditti, Marian Krivda, Kozhuharov, M. Veltri, Nicolas Lurkin, M. Pepe, S. Movchan, C. Lazzeroni, M. Sozzi, R. Aliberti, A. Norton, Roland Winston, G. Anzivino, G. Nuessle, F. Ambrosino, O. Jamet, J. Morant, B. Angelucci, Ryjov, N. H. Brook, Evgueni Goudzovski, G. Ruggiero, K. Massri, Buescher, Dave Britton, E. Pedreschi, Rupert Leitner, A. Romano, Fausto Sargeni, G. Collazuol, F Perez-Gomez, M. Moulson, A. Salamon, M. Morel, Falaleev, M. Mirra, Karol Kampf, T. Enik, E. Menichetti, M. Serra, B. Velghe, L. Glonti, F. Marchetto, Luca Federici, E. Capitolo, A. Ceccucci, S. Gallorini, S. Balev, Andrea Bizzeti, Yu. Kiryushin, M. Statera, A. Mapelli, M. Vormstein, P. Cenci, R. Guida, S. Giudici, R. Page, B. Wrona, Bonaiuto, G. Khoriauli, N. Doble, Matei Eugen Vasile, J. Bendotti, Angelo Biagioni, Roberto Piandani, D. Pietreanu, C. Cerri, G. Corradi, Obraztsov, F. Raffaelli, Antonino Sergi, A.I. Zinchenko, and P. Lichard
Subjects: Physics, Particle physics, Large Hadron Collider, Bar (music), Physics beyond the Standard Model, NA62 experiment, Standard Model
Abstract: The rare decay K + ! p + n n is an excellent process to probe Standard Model and indirectly search for new physics, complementary to the ongoing direct LHC searches. The NA62 experiment at CERN SPS aims to collect about 100 of such events in two years of data taking, keeping the background at the level of 10%. The physics motivation, experimental technique and status of the experiment are presented
Published: 2015
Full Text: View/download PDF

43. The NA62 experiment: Prospects for the K+ -> pi+nu nu bar measurement

Author: G. Aglieri Rinella, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, I. Azhinenko, S. Balev, A. Biagioni, C. Biino, A. Bizzeti, T. Blazek, A. Blik, B. Bloch Devaux, V. Bolotov, V. Bonaiuto, D. Britton, G. Britvich, N. Brook, F. Bucci, V. Buescher, F. Butin, V. Carassiti, N. Car tiglia, A. Cassese, A. Catinaccio, A. Ceccucci, P. Cenci, V. Cerny, C. Cerri, O. Chikilev, R. Ciaranfi, G. Collazuol, P. Cooke, P. Cooper, E. Cortina Gil, F. Costantini, A. Cotta Ramusino, D. Coward, G. D???Agostini, J. Dainton, P. Dalpiaz, H. Danielsson, N. De Simone, L. Di Lella, N. Doble, V. Duk, V. Elsha, J. Engelfried, V. Falaleev, R. Fan techi, L. Federici, M. Fiorini, J. Fry, A. Fucci, S. Gallorini, L. Gatignon, A. Gianoli, S. Giudici, L. Glonti, F. Gonnella, E. Goudzovski, R. Guida, E. Gushchin, F. Hahn, B. Hallgren, H. Heath, F. Herman, E. Iacopini, O. Jamet, P. Jarron, K. Kampf, J. Kaplon, V. Karjavin, V. Kekelidze, A. Khudyakov, Y.u. Kiryushin, K. Kleinknecht, A. Kluge, M. Koval, V. Kozhuharov, M. Krivda, J. Kunze, G. Lamanna, C. Lazzeroni, R. Leitner, M. Lenti, E. Leonardi, P. Lichard, R. Lietava, L. Litov, D. Lomidze, A. Lonardo, N. Lurkin, D. Madigozhin, G. Maire, A. Makarov, I. Mannelli, G. Man nocchi, A. Mapelli, F. Marchetto, K. Massri, P. Matak, G. Mazza, E. Menichetti, M. Misheva, N. Molokanova, M. Morel, M. Moulson, S. Movchan, D. Munday, M. Napolitano, F. Newson, A. Norton, M. Noy, G. Nuessle, V. Obraztsov, S. Padolski, R. Page, T. Pak, V. Palladino, A. Pardons, E. Pedreschi, M. Pepe, F. Petrucci, R. Piandani, M. Piccini, J. Pinzino, M. Pivanti, I. Polenkevich, I. Popov, Y.u. Potrebenikov, D. Protopopescu, F. Raffaelli, M. Raggi, P. Riedler, A. Romano, P. Rubin, G. Ruggiero, V. Ryjov, A. Salamon, G. Salina, V. Samsonov, E. Santovetti, F. Sargeni, S. Schifano, V. Semenov, A. Sergi, M. Serra, S. Shkarovskiy, A. Sotnikov, V. Sougonyaev, M. Sozzi, T. Spadaro, F. Spinella, R. Staley, M. Statera, P. Sutcliffe, N. Szilasi, M. Valdata Nappi, P. Valente, B. Vel ghe, M. Veltri, S. Venditti, M. Vormstein, H. Wahl, R. Wanke, P. Wertelaers, A. Winhart, R. Winston, B. Wrona, O. Yushchenko, M. Zamkovsky, A. Zinchenko, AMBROSINO, FABIO, CAPUSSELA, TIZIANA, DI FILIPPO, DOMENICO, MASSAROTTI, PAOLO, MIRRA, MARCO, SARACINO, GIULIO, G., Aglieri Rinella, Ambrosino, Fabio, B., Angelucci, A., Antonelli, G., Anzivino, R., Arcidiacono, I., Azhinenko, S., Balev, A., Biagioni, C., Biino, A., Bizzeti, T., Blazek, A., Blik, B., Bloch Devaux, V., Bolotov, V., Bonaiuto, D., Britton, G., Britvich, N., Brook, F., Bucci, V., Buescher, F., Butin, Capussela, Tiziana, V., Carassiti, N., Car tiglia, A., Cassese, A., Catinaccio, A., Ceccucci, P., Cenci, V., Cerny, C., Cerri, O., Chikilev, R., Ciaranfi, G., Collazuol, P., Cooke, P., Cooper, E., Cortina Gil, F., Costantini, A., Cotta Ramusino, D., Coward, G., D???agostini, J., Dainton, P., Dalpiaz, H., Danielsson, N., De Simone, DI FILIPPO, Domenico, L., Di Lella, N., Doble, V., Duk, V., Elsha, J., Engelfried, V., Falaleev, R., Fan techi, L., Federici, M., Fiorini, J., Fry, A., Fucci, S., Gallorini, L., Gatignon, A., Gianoli, S., Giudici, L., Glonti, F., Gonnella, E., Goudzovski, R., Guida, E., Gushchin, F., Hahn, B., Hallgren, H., Heath, F., Herman, E., Iacopini, O., Jamet, P., Jarron, K., Kampf, J., Kaplon, V., Karjavin, V., Kekelidze, A., Khudyakov, Kiryushin, Y. u., K., Kleinknecht, A., Kluge, M., Koval, V., Kozhuharov, M., Krivda, J., Kunze, G., Lamanna, C., Lazzeroni, R., Leitner, M., Lenti, E., Leonardi, P., Lichard, R., Lietava, L., Litov, D., Lomidze, A., Lonardo, N., Lurkin, D., Madigozhin, G., Maire, A., Makarov, I., Mannelli, G., Man nocchi, A., Mapelli, F., Marchetto, Massarotti, Paolo, K., Massri, P., Matak, G., Mazza, E., Menichetti, Mirra, Marco, M., Misheva, N., Molokanova, M., Morel, M., Moulson, S., Movchan, D., Munday, M., Napolitano, F., Newson, A., Norton, M., Noy, G., Nuessle, V., Obraztsov, S., Padolski, R., Page, T., Pak, V., Palladino, A., Pardon, E., Pedreschi, M., Pepe, F., Petrucci, R., Piandani, M., Piccini, J., Pinzino, M., Pivanti, I., Polenkevich, I., Popov, Potrebenikov, Y. u., D., Protopopescu, F., Raffaelli, M., Raggi, P., Riedler, A., Romano, P., Rubin, G., Ruggiero, V., Ryjov, A., Salamon, G., Salina, V., Samsonov, E., Santovetti, Saracino, Giulio, F., Sargeni, S., Schifano, V., Semenov, A., Sergi, M., Serra, S., Shkarovskiy, A., Sotnikov, V., Sougonyaev, M., Sozzi, T., Spadaro, F., Spinella, R., Staley, M., Statera, P., Sutcliffe, N., Szilasi, M., Valdata Nappi, P., Valente, B., Vel ghe, M., Veltri, S., Venditti, M., Vormstein, H., Wahl, R., Wanke, P., Wertelaer, A., Winhart, R., Winston, B., Wrona, O., Yushchenko, M., Zamkovsky, and A., Zinchenko
Published: 2013

44. The NA62 experiment at CERN: Status of the construction

Author: G. Aglieri Rinella, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, I. Azhinenko, S. Balev, J. Bendotti, A. Biagioni, C. Biino, A. Bizzeti, T. Blazek, A. Blik, B. Bloch Devaux, V. Bolotov, V. Bonaiuto, D. Britton, G. Britvich, N. Brook, F. Bucci, V. Buescher, F. Butin, E. Capitolo, C. Capoccia, V. Carassiti, N. Cartiglia, A. Cassese, A. Catinaccio, A. Cecchetti, A. Ceccucci, P. Cenci, V. Cerny, C. Cerri, O. Chikilev, R. Ciaranfi, G. Collazuol, P. Cooke, P. Cooper, G. Corradi, E. Cortina Gil, F. Costantini, A. Cotta Ramusino, D. Coward, G. D'Agostini, J. Dainton, P. Dalpiaz, H. Danielsson, J. Degrange, N. De Simone, L. DiLella, N. Dixon, N. Doble, V. Duk, V. Elsha, J. Engelfried, V. Falaleev, R. Fantechi, L. Federici, M. Fiorini, J. Fry, A. Fucci, S. Gallorini, L. Gatignon, A. Gianoli, S. Giudici, L. Glonti, A. Goncalves Martins De Oliveira, F. Gonnella, E. Goudzovski, R. Guida, E. Gushchin, F. Hahn, B. Hallgren, H. Heath, F. Herman, E. Iacopini, O. Jamet, P. Jarron, K. Kampf, J. Kaplon, V. Karjavin, V. Kekelidze, A. Khudyakov, Y.u. Kiryushin, K. Kleinknecht, A. Kluge, M. Koval, V. Kozhuharov, M. Krivda, J. Kunze, G. Lamanna, C. Lazzeroni, R. Leitner, R. Lenci, M. Lenti, E. Leonardi, P. Lichard, R. Lietava, L. Litov, D. Lomidze, A. Lonardo, N. Lurkin, D. Madigozhin, G. Maire, A. Makarov, I. Mannelli, G. Mannocchi, A. Mapelli, F. Marchetto, K. Massri, P. Matak, G. Mazza, E. Menichetti, M. Misheva, N. Molokanova, J. Morant, M. Morel, M. Moulson, S. Movchan, D. Munday, M. Napolitano, F. Newson, A. Norton, M. Noy, G. Nuessle, V. Obraztsov, S. Padolski, R. Page, T. Pak, V. Palladino, A. Pardons, E. Pedreschi, M. Pepe, F. Perez Gomez, F. Petrucci, R. Piandani, M. Piccini, J. Pinzino, M. Pivanti, I. Polenkevich, I. Popov, Y.u. Potrebenikov, D. Protopopescu, F. Raffaelli, M. Raggi, P. Riedler, A. Romano, P. Rubin, G. Ruggiero, V. Russo, V. Ryjov, A. Salamon, G. Salina, V. Samsonov, E. Santovetti, F. Sargeni, S. Schifano, V. Semenov, A. Sergi, M. Serra, S. Shkarovskiy, A. Sotnikov, V. Sougonyaev, M. Sozzi, T. Spadaro, F. Spinella, R. Staley, M. Statera, P. Sutcliffe, N. Szilasi, D. Tagnani, M. Valdata Nappi, P. Valente, V. Vassilieva, B. Velghe, M. Veltri, S. Venditti, M. Vormstein, H. Wahl, R. Wanke, P. Wertelaers, A. Winhart, R. Winston, B. Wrona, O. Yushchenko, M. Zamkovsky, A. Zinchenko, AMBROSINO, FABIO, CAPUSSELA, TIZIANA, DI FILIPPO, DOMENICO, MASSAROTTI, PAOLO, MIRRA, MARCO, SARACINO, GIULIO, G., Aglieri Rinella, Ambrosino, Fabio, B., Angelucci, A., Antonelli, G., Anzivino, R., Arcidiacono, I., Azhinenko, S., Balev, J., Bendotti, A., Biagioni, C., Biino, A., Bizzeti, T., Blazek, A., Blik, B., Bloch Devaux, V., Bolotov, V., Bonaiuto, D., Britton, G., Britvich, N., Brook, F., Bucci, V., Buescher, F., Butin, E., Capitolo, C., Capoccia, Capussela, Tiziana, V., Carassiti, N., Cartiglia, A., Cassese, A., Catinaccio, A., Cecchetti, A., Ceccucci, P., Cenci, V., Cerny, C., Cerri, O., Chikilev, R., Ciaranfi, G., Collazuol, P., Cooke, P., Cooper, G., Corradi, E., Cortina Gil, F., Costantini, A., Cotta Ramusino, D., Coward, G., D'Agostini, J., Dainton, P., Dalpiaz, H., Danielsson, J., Degrange, N., De Simone, DI FILIPPO, Domenico, L., Dilella, N., Dixon, N., Doble, V., Duk, V., Elsha, J., Engelfried, V., Falaleev, R., Fantechi, L., Federici, M., Fiorini, J., Fry, A., Fucci, S., Gallorini, L., Gatignon, A., Gianoli, S., Giudici, L., Glonti, A., Goncalves Martins De Oliveira, F., Gonnella, E., Goudzovski, R., Guida, E., Gushchin, F., Hahn, B., Hallgren, H., Heath, F., Herman, E., Iacopini, O., Jamet, P., Jarron, K., Kampf, J., Kaplon, V., Karjavin, V., Kekelidze, A., Khudyakov, Kiryushin, Y. u., K., Kleinknecht, A., Kluge, M., Koval, V., Kozhuharov, M., Krivda, J., Kunze, G., Lamanna, C., Lazzeroni, R., Leitner, R., Lenci, M., Lenti, E., Leonardi, P., Lichard, R., Lietava, L., Litov, D., Lomidze, A., Lonardo, N., Lurkin, D., Madigozhin, G., Maire, A., Makarov, I., Mannelli, G., Mannocchi, A., Mapelli, F., Marchetto, Massarotti, Paolo, K., Massri, P., Matak, G., Mazza, E., Menichetti, Mirra, Marco, M., Misheva, N., Molokanova, J., Morant, M., Morel, M., Moulson, S., Movchan, D., Munday, M., Napolitano, F., Newson, A., Norton, M., Noy, G., Nuessle, V., Obraztsov, S., Padolski, R., Page, T., Pak, V., Palladino, A., Pardon, E., Pedreschi, M., Pepe, F., Perez Gomez, F., Petrucci, R., Piandani, M., Piccini, J., Pinzino, M., Pivanti, I., Polenkevich, I., Popov, Potrebenikov, Y. u., D., Protopopescu, F., Raffaelli, M., Raggi, P., Riedler, A., Romano, P., Rubin, G., Ruggiero, V., Russo, V., Ryjov, A., Salamon, G., Salina, V., Samsonov, E., Santovetti, Saracino, Giulio, F., Sargeni, S., Schifano, V., Semenov, A., Sergi, M., Serra, S., Shkarovskiy, A., Sotnikov, V., Sougonyaev, M., Sozzi, T., Spadaro, F., Spinella, R., Staley, M., Statera, P., Sutcliffe, N., Szilasi, D., Tagnani, M., Valdata Nappi, P., Valente, V., Vassilieva, B., Velghe, M., Veltri, S., Venditti, M., Vormstein, H., Wahl, R., Wanke, P., Wertelaer, A., Winhart, R., Winston, B., Wrona, O., Yushchenko, M., Zamkovsky, and A., Zinchenko
Published: 2013

45. Rare K decays: Present and perspectives with NA62

Author: G. Aglieri Rinella, R. Aliberti, B. Angelucci, A. Antonelli, G. Anzivino, R. Arcidiacono, I. Azhinenko, S. Balev, J. Bendotti, A. Biagioni, C. Biino, A. Bizzeti, T. Blazek, A. Blik, B. Bloch Devaux, V. Bolotov, V. Bonaiuto, M. Bragadireanu, D. Britton, G. Britvich, N. Brook, F. Bucci, V. Buescher, F. Butin, E. Capitolo, C. Capoccia, V. Carassiti, N. Cartiglia, A. Cassese, A. Catinaccio, A. Cecchetti, A. Ceccucci, P. Cenci, V. Cerny, C. Cerri, O. Chikilev, R. Ciaranfi, G. Collazuol, P. Cooke, P. Cooper, G. Corradi, E. Cortina Gil, F. Costantini, A. Cotta Ramusino, D. Coward, G. D???Agostini, J. Dain ton, P. Dalpiaz, H. Danielsson, J. Degrange, N. De Simone, L. Di Lella, N. Dixon, N. Doble, V. Duk, V. Elsha, J. Engelfried, T. Enik, V. Falaleev, R. Fantechi, L. Federici, M. Fiorini, J. Fry, A. Fucci, L. Fulton, S. Gallorini, L. Gatignon, A. Gianoli, S. Giudici, L. Glonti, A. Goncalves Martins, F. Gonnella, E. Goudzovski, R. Guida, E. Gushchin, F. Hahn, B. Hallgren, H. Heath, F. Herman, D. Hutchcroft, E. Ia copini, O. Jamet, P. Jarron, K. Kampf, J. Kaplon, V. Karjavin, V. Kekelidze, S. Kholodenko, G. Khoriauli, A. Khudyakov, Y.u. Kiryushin, K. Kleinknecht, A. Kluge, M. Koval, V. Kozhuharov, M. Krivda, Y. Kudenko, J. Kunze, G. Lamanna, C. Lazzeroni, R. Leitner, R. Lenci, M. Lenti, E. Leonardi, P. Lichard, R. Lietava, L. Litov, D. Lomidze, A. Lonardo, N. Lurkin, D. Madigozhin, G. Maire, A. Makarov, I. Mannelli, G. Man nocchi, A. Mapelli, F. Marchetto, K. Massri, P. Matak, G. Mazza, E. Menichetti, M. Misheva, N. Molokanova, J. Morant, M. Morel, M. Moulson, S. Movchan, D. Munday, M. Napolitano, F. Newson, A. Norton, M. Noy, G. Nuessle, V. Obraztsov, S. Padolski, R. Page, V. Palladino, A. Pardons, E. Pedreschi, M. Pepe, F. Perez Gomez, M. Perrin Terrin, P. Petrov, F. Petrucci, R. Piandani, M. Pic cini, D. Pietreanu, J. Pinzino, M. Pivanti, I. Polenkevich, I. Popov, Y.u. Potrebenikov, D. Protopopescu, F. Raffaelli, M. Raggi, P. Riedler, A. Romano, P. Rubin, G. Ruggiero, V. Russo, V. Ryjov, A. Salamon, G. Salina, V. Samsonov, E. Santovetti, F. Sargeni, S. Schifano, V. Semenov, A. Sergi, M. Serra, S. Shkarovskiy, A. Sotnikov, V. Sougonyaev, M. Sozzi, T. Spadaro, F. Spinella, R. Staley, M. Statera, P. Sutcliffe, N. Szilasi, D. Tagnani, M. Valdata Nappi, P. Valente, M. Vasile, V. Vassilieva, B. Velghe, M. Veltri, S. Venditti, M. Vormstein, H. Wahl, R. Wanke, P. Wertelaers, A. Winhart, R. Winston, B. Wrona, O. Yushchenko, M. Zamkovsky, A. Zinchenko, AMBROSINO, FABIO, CAPUSSELA, TIZIANA, DI FILIPPO, DOMENICO, MASSAROTTI, PAOLO, MIRRA, MARCO, SARACINO, GIULIO, G., Aglieri Rinella, R., Aliberti, Ambrosino, Fabio, B., Angelucci, A., Antonelli, G., Anzivino, R., Arcidiacono, I., Azhinenko, S., Balev, J., Bendotti, A., Biagioni, C., Biino, A., Bizzeti, T., Blazek, A., Blik, B., Bloch Devaux, V., Bolotov, V., Bonaiuto, M., Bragadireanu, D., Britton, G., Britvich, N., Brook, F., Bucci, V., Buescher, F., Butin, E., Capitolo, C., Capoccia, Capussela, Tiziana, V., Carassiti, N., Cartiglia, A., Cassese, A., Catinaccio, A., Cecchetti, A., Ceccucci, P., Cenci, V., Cerny, C., Cerri, O., Chikilev, R., Ciaranfi, G., Collazuol, P., Cooke, P., Cooper, G., Corradi, E., Cortina Gil, F., Costantini, A., Cotta Ramusino, D., Coward, G., D???agostini, J., Dain ton, P., Dalpiaz, H., Danielsson, J., Degrange, N., De Simone, DI FILIPPO, Domenico, L., Di Lella, N., Dixon, N., Doble, V., Duk, V., Elsha, J., Engelfried, T., Enik, V., Falaleev, R., Fantechi, L., Federici, M., Fiorini, J., Fry, A., Fucci, L., Fulton, S., Gallorini, L., Gatignon, A., Gianoli, S., Giudici, L., Glonti, A., Goncalves Martin, F., Gonnella, E., Goudzovski, R., Guida, E., Gushchin, F., Hahn, B., Hallgren, H., Heath, F., Herman, D., Hutchcroft, E., Ia copini, O., Jamet, P., Jarron, K., Kampf, J., Kaplon, V., Karjavin, V., Kekelidze, S., Kholodenko, G., Khoriauli, A., Khudyakov, Kiryushin, Y. u., K., Kleinknecht, A., Kluge, M., Koval, V., Kozhuharov, M., Krivda, Y., Kudenko, J., Kunze, G., Lamanna, C., Lazzeroni, R., Leitner, R., Lenci, M., Lenti, E., Leonardi, P., Lichard, R., Lietava, L., Litov, D., Lomidze, A., Lonardo, N., Lurkin, D., Madigozhin, G., Maire, A., Makarov, I., Mannelli, G., Man nocchi, A., Mapelli, F., Marchetto, Massarotti, Paolo, K., Massri, P., Matak, G., Mazza, E., Menichetti, Mirra, Marco, M., Misheva, N., Molokanova, J., Morant, M., Morel, M., Moulson, S., Movchan, D., Munday, M., Napolitano, F., Newson, A., Norton, M., Noy, G., Nuessle, V., Obraztsov, S., Padolski, R., Page, V., Palladino, A., Pardon, E., Pedreschi, M., Pepe, F., Perez Gomez, M., Perrin Terrin, P., Petrov, F., Petrucci, R., Piandani, M., Pic cini, D., Pietreanu, J., Pinzino, M., Pivanti, I., Polenkevich, I., Popov, Potrebenikov, Y. u., D., Protopopescu, F., Raffaelli, M., Raggi, P., Riedler, A., Romano, P., Rubin, G., Ruggiero, V., Russo, V., Ryjov, A., Salamon, G., Salina, V., Samsonov, E., Santovetti, Saracino, Giulio, F., Sargeni, S., Schifano, V., Semenov, A., Sergi, M., Serra, S., Shkarovskiy, A., Sotnikov, V., Sougonyaev, M., Sozzi, T., Spadaro, F., Spinella, R., Staley, M., Statera, P., Sutcliffe, N., Szilasi, D., Tagnani, M., Valdata Nappi, P., Valente, M., Vasile, V., Vassilieva, B., Velghe, M., Veltri, S., Venditti, M., Vormstein, H., Wahl, R., Wanke, P., Wertelaer, A., Winhart, R., Winston, B., Wrona, O., Yushchenko, M., Zamkovsky, and A., Zinchenko
Published: 2013

46. Performance and operation of the calorimetric trigger processor of the NA62 experiment at CERN SPS

Author: M. Zamkovsky, G. Paoluzzi, Vincenzo Bonaiuto, D. Soldi, M. Lupi, A. Ceccucci, B. Checcucci, M. Barbanera, A. Salamon, M. Bizzarri, Vladimir Ryjov, Antonino Sergi, A. Papi, G. Salina, E. Pedreschi, Roberto Ammendola, N. De Simone, A. Fucci, R. Fantechi, D. Battista, Mauro Piccini, F. Spinella, R. Piandani, Fausto Sargeni, S. Venditti, and Luca Federici
Subjects: Physics, Large Hadron Collider, Meson, 010308 nuclear & particles physics, business.industry, Branching fraction, Electrical engineering, Elementary particle, NA62 experiment, 01 natural sciences, Particle identification, Settore FIS/04 - Fisica Nucleare e Subnucleare, 030218 nuclear medicine & medical imaging, Calorimeter, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Measuring instrument, High Energy Physics::Experiment, business, Instrumentation, Mathematical Physics
Abstract: The NA62 experiment at the CERN SPS aims at measuring the branching ratio of the very rare kaon decay K+ → π+ ν (expected 10−10) with a 10% background. Since an high-intensity kaon beam is required to collect enough statistics, the Level-0 trigger plays a fundamental role in both the background rejection and in the particle identification. The calorimetric trigger collects data from various calorimeters and it is able to identify clusters of energy deposit and determine their position, fine-time and energy. This paper describes the trigger system setup during the 2016 physics data taking. A newly implemented cluster counting algorithm is also presented.
Published: 2017
Full Text: View/download PDF

47. Prospects for K\rightarrow p+ nu nubar observation at CERN

Author: Mauro Piccini, Elsha, Marcello Pivanti, Paolo Massarotti, N. De Simone, I. Popov, I. Mannelli, M Valdata Nappi, Sebastiano Fabio Schifano, N. H. Brook, Konrad Kleinknecht, A. Sotnikov, D. Coward, R. Fantechi, S. Movchan, Yu. Kiryushin, Kekelidze, C. Lazzeroni, F. Ambrosino, M. Statera, A. Mapelli, G. D'Agostini, M. Koval, S. Venditti, Sougonyaev, M. Pepe, Cerny, E. Santovetti, Emilio Leonardi, I. Polenkevich, Rainer Wanke, M. Fiorini, P. Wertelaers, S. Giudici, P. Rubin, K. Massri, E. Cortina Gil, P. F. Dalpiaz, M. Moulson, J. R. Fry, Tommaso Spadaro, Mauro Raggi, M. Vormstein, P. Cenci, Francesco Gonnella, Tomas Blazek, J. Kaplon, D. Di Filippo, Roberta Arcidiacono, E. Gushchin, Semenov, Roberto Piandani, P. Matak, G. Saracino, G. Anzivino, M. Sozzi, A. Fucci, Yu. Potrebenikov, L. Gatignon, N. Szilasi, Karjavin, Jürgen Engelfried, M. Lenti, F. Marchetto, P. Lichard, Samsonov, A. Winhart, G Aglieri Rinella, A. Khudyakov, Paolo Valente, Karol Kampf, Luca Federici, O. Chikilev, G. Mannocchi, D. Protopopescu, Nicolas Lurkin, R. Page, B. Wrona, F. Bucci, Milena Misheva, G. Ruggiero, P. Sutcliffe, F. Raffaelli, D. T. Madigozhin, Duk, G. Nuessle, Antonio Cassese, Buescher, Rupert Leitner, Falaleev, F. Newson, S. Shkarovskiy, J. B. Dainton, M. Zamkovsky, Alexander Kluge, Alessandro Lonardo, F. Herman, O. Jamet, D. J. Munday, H. O. Danielsson, Fabrizio Petrucci, E. Iacopini, Roberto Ciaranfi, F. Spinella, A. Salamon, M. Serra, G. Lamanna, T. Capussela, A. Cotta Ramusino, Leander Litov, A. Gianoli, S. Balev, Helen F Heath, C. Cerri, A. Romano, Fausto Sargeni, Dave Britton, G. Collazuol, S. Gallorini, F. Butin, B. Angelucci, G. Britvich, N. Doble, L Di Lella, F. Costantini, F. Hahn, Cristina Biino, R. Lietava, A. Ceccucci, B. Hallgren, A. Antonelli, Pierre Jarron, Marian Krivda, Andrea Bizzeti, Evgueni Goudzovski, J. Kunze, G. Salina, Andrea Catinaccio, I. Azhinenko, N. A. Molokanova, A. I. Makarov, B. Velghe, A. Pardons, H. D. Wahl, G. Maire, M. Napolitano, Petra Riedler, J. Pinzino, R. Guida, Bonaiuto, David Lomidze, Ryjov, M. Morel, Angelo Biagioni, E. Menichetti, A. Blik, M. Noy, G. Mazza, R.J. Staley, Bolotov, Kozhuharov, M. Veltri, A. Norton, Roland Winston, P. S. Cooper, S. Padolski, O. Yushchenko, Nicolo Cartiglia, Palladino, P.A. Cooke, Carassiti, Antonino Sergi, B Bloch Devaux, E. Pedreschi, M. Mirra, T Pak, L. Glonti, A.I. Zinchenko, and Obraztsov
Subjects: Physics, Particle physics, Large Hadron Collider, Physics beyond the Standard Model, NA62 experiment
Abstract: The rare decays K+ →π+νν¯ are excellent tool to make tests of new physics complementary to LHC thanks to their theoretically cleanness. The NA62 experiment at CERN SPS aims to collect of the order of 100 K+ →π+νν¯ events in two years of data taking, keeping the background at the level of 10%. Part of the experimental apparatus has been commissioned during the technical run in 2012. The physics prospects and status of the experiment will be reviewed.
Published: 2014
Full Text: View/download PDF

48. NA62 and NA48/2 results on search for Heavy Neutral Leptons

Author: A. Antonelli, O. Yushchenko, V. Ryjov, M. Sozzi, F. Marchetto, M. Mirra, V. Fascianelli, D. Protopopescu, Douglas Bryman, G. Lamanna, E. Iacopini, R. Lollini, F. Gonnella, E. Pedreschi, A. Korotkova, I. Mannelli, A. Shaikhiev, L. Bician, G. Khoriauli, Y. U. Kudenko, P. Dalpiaz, M. B. Brunetti, B. Angelucci, V. Cerny, P. Lichard, R. Wanke, M. Corvino, G. Anzivino, R. Volpe, A. Salamon, C. Santoni, C. Lazzeroni, P. Laycock, M. Perrin-Terrin, V. Falaleev, D. Di Filippo, D. Lomidze, G. Saracino, V. Sougonyaev, S. Padolski, A. Sturgess, M. Boretto, A. Mapelli, G. Ruggiero, D. Soldi, C. Parkinson, J. Fu, T. Capussela, A. Lonardo, G. Georgiev, M. Medvedeva, S. Venditti, M. Raggi, B. Bloch-Devaux, Mario Giorgi, V. Obraztsov, S. Shkarovskiy, C. Biino, A. Khotyantsev, A. Bizzeti, M. Zamkovsky, E. Cortina Gil, B. Wrona, A. Romano, F. Brizioli, M Napolitano, M. Pepe, V. Kekelidze, S. Ghinescu, L. Fulton, F. Petrucci, V. Palladino, Pasquale Lubrano, M. Koval, R. Arcidiacono, Massimiliano Fiorini, F. Hahn, V. Kozhuharov, O. Hutanu, R. Piandani, E. Gushchin, P. Petrov, Luca Pontisso, G. Latino, F. Spinella, E. Goudzovski, A. Ceccucci, V. Bonaiuto, A. Fucci, E. Minucci, A. Conovaloff, L. Federici, S. Trilov, M. Bragadireanu, B. Velghe, L. Peruzzo, Piero Vicini, D. Britton, S. Movchan, P. Cooper, M. Moulson, B. Checcucci, F. Duval, M. Vormstein, S. Giudici, V. Kurochka, R. Marchevski, R. D. page, R. Ammendola, B. Dobrich, P. Rubin, L. Iacobuzio, David Hutchcroft, E. Menichetti, B. Jenninger, E. Leonardi, Fausto Sargeni, A. Filippi, G. Mannocchi, P. Massarotti, N. Lurkin, L. Di Lella, A. Mefodev, G. D'Agostini, C. Cerri, E. Maurice, J. Dainton, L. Litov, A. Sergi, A. Kleimenova, N. Doble, Z. Kucerova, I. Polenkevich, Helen F Heath, A. Gianoli, G. Lanfranchi, J. Pinzino, F. Ambrosino, N. De Simone, J. Engelfried, S. Fedotov, T. Spadaro, M. Lenti, R. Aliberti, G. Lehmann Miotto, S. Martellotti, T. Enik, K. Massri, R. Guida, H. Danielsson, Yu Potrebenikov, A. Biagioni, J. Kunze, T. Blazek, M. Noy, E. Imbergamo, N. Molokanova, R. Fantechi, M. Piccini, T. Numao, E. Migliore, Matteo Lupi, N. Estrada-Tristan, L. Gatignon, J. Fry, F. Costantini, D. Madigozhin, P. Valente, P. Cenci, A. Ostankov, A. Cotta Ramusino, D. Coward, M. Barbanera, J. Swallow, V. Kurshetsov, S. Kholodenko, H. Wahl, K. Kampf, F. Newson, E. Gamberini, A. Norton, I. Neri, V. Semenov, C. Graham, F. Bucci, T. Husek, M. Misheva, A. Zinchenko, V. Duk, D’Ambrosio, G, Iacovacci, M, Mastroianni, S, Passera, M, Venanzoni, G, Lamanna, Gianluca, Aliberti, R., Ambrosino, F., Ammendola, R., Angelucci, B., Antonelli, A., Anzivino, G., Arcidiacono, R., Barbanera, M., Biagioni, A., Bician, L., Biino, C., Bizzeti, A., Blazek, T., Bloch-Devaux, B., Bonaiuto, V., Boretto, M., Bragadireanu, M., Britton, D., Brizioli, F., Brunetti, M. B., Bryman, D., Bucci, F., Capussela, T., Ceccucci, A., Cenci, P., Cerny, V., Cerri, C., Checcucci, B., Conovaloff, A., Cooper, P., Cortina Gil, E., Corvino, M., Costantini, F., Cotta Ramusino, A., Coward, D., D'Agostini, G., Dainton, J., Dalpiaz, P., Danielsson, H., De Simone, N., Di Filippo, D., Di Lella, L., Doble, N., Dobrich, B., Duval, F., Duk, V., Engelfried, J., Enik, T., Estrada-Tristan, N., Falaleev, V., Fantechi, R., Fascianelli, V., Federici, L., Fedotov, S., Filippi, A., Fiorini, M., Fry, J., Fu, J., Fucci, A., Fulton, L., Gamberini, E., Gatignon, L., Georgiev, G., Ghinescu, S., Gianoli, A., Giorgi, M., Giudici, S., Gonnella, F., Goudzovski, E., Graham, C., Guida, R., Gushchin, E., Hahn, F., Heath, H., Husek, T., Hutanu, O., Hutchcroft, D., Iacobuzio, L., Iacopini, E., Imbergamo, E., Jenninger, B., Kampf, K., Kekelidze, V., Kholodenko, S., Khoriauli, G., Khotyantsev, A., Kleimenova, A., Korotkova, A., Koval, M., Kozhuharov, V., Kucerova, Z., Kudenko, Y., Kunze, J., Kurochka, V., Kurshetsov, V., Lanfranchi, G., Lamanna, G., Latino, G., Laycock, P., Lazzeroni, C., Lenti, M., Lehmann Miotto, G., Leonardi, E., Lichard, P., Litov, L., Lollini, R., Lomidze, D., Lonardo, A., Lubrano, P., Lupi, M., Lurkin, N., Madigozhin, D., Mannelli, I., Mannocchi, G., Mapelli, A., Marchetto, F., Marchevski, R., Martellotti, S., Massarotti, P., Massri, K., Maurice, E., Medvedeva, M., Mefodev, A., Menichetti, E., Migliore, E., Minucci, E., Mirra, M., Misheva, M., Molokanova, N., Moulson, M., Movchan, S., Napolitano, M., Neri, I., Newson, F., Norton, A., Noy, M., Numao, T., Obraztsov, V., Ostankov, A., Padolski, S., Page, R., Palladino, V., Parkinson, C., Pedreschi, E., Pepe, M., Perrin-Terrin, M., Peruzzo, L., Petrov, P., Petrucci, F., Piandani, R., Piccini, M., Pinzino, J., Polenkevich, I., Pontisso, L., Potrebenikov, Yu., Protopopescu, D., Raggi, M., Romano, A., Rubin, P., Ruggiero, G., Ryjov, V., Salamon, A., Santoni, C., Saracino, G., Sargeni, F., Semenov, V., Sergi, A., Shaikhiev, A., Shkarovskiy, S., Soldi, D., Sougonyaev, V., Sozzi, M., Spadaro, T., Spinella, F., Sturgess, A., Swallow, J., Trilov, S., Valente, P., Velghe, B., Venditti, S., Vicini, P., Volpe, R., Vormstein, M., Wahl, H., Wanke, R., Wrona, B., Yushchenko, O., Zamkovsky, M., and Zinchenko, A.
Subjects: Physics, Range (particle radiation), Particle physics, Large Hadron Collider, Heavy Neutral leptons, 010308 nuclear & particles physics, QC1-999, Detector, High Energy Physics::Phenomenology, 01 natural sciences, Physics, neutral leptons, NA62, Settore FIS/04 - Fisica Nucleare e Subnucleare, Kaon Physics, Physics and Astronomy (all), neutral leptons, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Physics - Experiment, Neutrino, 010306 general physics, Particle Physics - Experiment, Lepton
Abstract: In this paper we present new results on upper limits for the search of Heavy Neutral Leptons (HNL) with data collected by NA48/2 (2003-2004), NA62-RK (2007) and NA62 (2015) CERN experiments. The data collected with different trigger configuration allow to search for both long and short living heavy neutrinos in the mass range below the kaon mass. In addition the status of the search for K+ → π+vv with the NA62 detector will be briefly presented.
Full Text: View/download PDF

49. NA48/62 latest results

Author: Alessandro Lonardo, F. Bucci, G. Lehmann Miotto, Milena Misheva, C. Graham, L. Di Lella, S. Fedotov, P. S. Cooper, Babette Döbrich, V. Kozhuharov, G. D'Agostini, M. Zamkovsky, V. Kurochka, R. Guida, Claudio Santoni, J. R. Fry, A. Filippi, M. Fiorini, Tomáš Husek, M. Pepe, B. Jenninger, D. T. Madigozhin, Matteo Lupi, A. Antonelli, V. Palladino, T. Capussela, A. Gianoli, T. Numao, Helen F Heath, Rainer Wanke, P. Rubin, B. Wrona, S. Movchan, L. Iacobuzio, D. Soldi, O. Hutanu, G. Saracino, C. Lazzeroni, Paul Laycock, Mario Giorgi, D. Di Filippo, Roberta Arcidiacono, Vladimir Ryjov, A. Sturgess, F. Ambrosino, Georgi P. Georgiev, Viacheslav Duk, Mauro Piccini, E. Gushchin, A. Mapelli, Emilio Leonardi, Paolo Massarotti, I. Polenkevich, Roberto Ammendola, S. Giudici, G. Anzivino, M. Lenti, Christopher John Parkinson, K. Massri, Yu. Kudenko, E. Minucci, Paolo Valente, A. Salamon, G. Khoriauli, R. D. page, G. Lanfranchi, P. Lubrano, F. Brizioli, R. Aliberti, M. Sozzi, M. Boretto, A. Norton, Evgueni Goudzovski, L. Fulton, F. Duval, David Lomidze, C. Cerri, F. Marchetto, Yu. Potrebenikov, Dave Britton, N. Estrada-Tristan, M. Medvedeva, Ilaria Neri, Vincenzo Bonaiuto, Mattia Barbanera, Giuseppe Latino, Piero Vicini, S. Trilov, E. Cortina Gil, T. Enik, Douglas Bryman, M. Vormstein, P. Cenci, E. Menichetti, A.I. Zinchenko, L. Peruzzo, Cristina Biino, P. Lichard, Roberto Piandani, S. Martellotti, A. Ceccucci, S. Padolski, B. Checcucci, Andrea Bizzeti, O. Yushchenko, B. Bloch-Devaux, B. Velghe, G. Mannocchi, G. Lamanna, G. Ruggiero, V. Kurshetsov, V. Obraztsov, S. Kholodenko, N. Doble, M. Noy, V. Fascianelli, F. Costantini, V. Cerny, V. E. Semenov, F. Hahn, Z. Kucerova, A. Romano, Fausto Sargeni, E. Pedreschi, H. D. Wahl, A P Ostankov, E. Iacopini, R. Marchevski, Antonino Sergi, R. Volpe, M. Mirra, E. Gamberini, Angelo Biagioni, F. Spinella, N. De Simone, Vladimir Kekelidze, P. Petrov, F. Newson, R. Lollini, A. Fucci, S. Shkarovskiy, Ernesto Migliore, J. B. Dainton, L. Gatignon, M. Corvino, D. Protopopescu, Emilie Maurice, Nicolas Lurkin, M. B. Brunetti, V. Sougonyaev, David Hutchcroft, R. Fantechi, A. Khotyantsev, Mauro Raggi, E. Imbergamo, H. O. Danielsson, Luca Pontisso, B. Angelucci, Francesco Gonnella, Tomas Blazek, A. Cotta Ramusino, P. F. Dalpiaz, Jürgen Engelfried, D. Coward, M. Perrin-Terrin, Tommaso Spadaro, L. Bician, Luca Federici, J. Swallow, A. Mefodev, I. Mannelli, J. L. Fu, A. Conovaloff, M. Koval, S. Venditti, A. Shaikhiev, M. Bragadireanu, A. Korotkova, V. Falaleev, S. Ghinescu, J. Kunze, N. A. Molokanova, M. Napolitano, J. Pinzino, M. Moulson, Karol Kampf, Fabrizio Petrucci, Leander Litov, and A. Kleimenova
Subjects: Nuclear physics, Physics, Particle physics, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Mass spectrum, Matrix element, Creative commons, NA62 experiment, Particle Physics - Experiment, Settore FIS/04 - Fisica Nucleare e Subnucleare, Large sample
Abstract: The NA62 experiment at the CERN SPS recorded in 2007 a large sample of K+ ? µ+?µ decays. A peak search in the missing mass spectrum of this decay is performed. In the absence of observed signal, the limits obtained on B(K+ ? µ+?h) and on the mixing matrix element |Uµ 4| are reported. The upgraded NA62 experiment started data taking in 2015. About 5×1011K+ decays have been recorded so far to measure the branching ratio of the K+ ? ?+?? decay. Preliminary results from the K+ ? ?+?? analysis based on about 5% of the 2016 statistics are reported.
Full Text: View/download PDF

50. Search for heavy neutral lepton production in K+ decays to positrons

Author: Fabrizio Petrucci, F. Hahn, B. Jenninger, Mario Giorgi, D. Di Filippo, Leander Litov, P. Rubin, S. Padolski, Paul Laycock, Evgueni Goudzovski, S. Martellotti, Claudio Santoni, A. Filippi, G. Saracino, M. Vormstein, D. Emelyanov, B. Angelucci, L. Iacobuzio, E. B. Holzer, A. I. Zinchenko, M. Koval, Mattia Barbanera, G. Latino, M. Medvedeva, Giuseppe Ruggiero, V. Palladino, Yu. Potrebenikov, L. Bician, A. Fucci, Tommaso Spadaro, J. Swallow, Y. Petrov, Johannes Bernhard, A. Parenti, F. Spinella, H. D. Wahl, D. Coward, E. Iacopini, R. Lollini, T. Capussela, A. Gianoli, Roberto Guida, J. L. Fu, G. Lanfranchi, J. R. Fry, G. Lamanna, Ernesto Migliore, Tomáš Husek, Georgi P. Georgiev, Viacheslav Duk, T. Bache, R. W. L. Jones, A. Kleimenova, F. Costantini, Alessandro Lonardo, E. Cortina Gil, Roberto Piandani, G. Anzivino, L. Peruzzo, Andrea Biagioni, R. Volpe, L. Gatignon, M. Fiorini, M. Corvino, M. Piccini, P. F. Dalpiaz, R. Marchevski, E. Gamberini, D. T. Madigozhin, J. Jerhot, Roberto Ammendola, L. Di Lella, R. Page, V. Kozhuharov, N. A. Molokanova, A. Conovaloff, M. Misheva, M. Zamkovsky, S. Movchan, C. Lazzeroni, F. Ambrosino, D. Protopopescu, B. Velghe, J. Carmignani, A. Salamon, G. Khoriauli, R. Fantechi, Nicolas Lurkin, Matteo Lupi, F. Brizioli, A. Mefodev, M. B. Brunetti, Paolo Massarotti, M. Napolitano, B. Bloch-Devaux, V. Kurochka, Helen F Heath, I. Mannelli, Jürgen Engelfried, B. Wrona, A. Korotkova, A. Sturgess, J. B. Dainton, E. Lari, V. Cerny, H. O. Danielsson, C. Cerri, S. Trilov, Jacopo Pinzino, M. Perrin-Terrin, Vladimir Kekelidze, Luca Pontisso, Antonino Sergi, S. Schuchmann, Emilio Leonardi, A. M. Bragadireanu, I. Polenkevich, L. Federici, S. Venditti, E. Imbergamo, M. Moulson, N. Doble, A. Baeva, D. Baigarashev, Karol Kampf, V. Obraztsov, S. Ghinescu, T. Numao, Paolo Valente, Mauro Raggi, E. Pedreschi, E. Menichetti, V. E. Semenov, A. Shaikhiev, Francesco Gonnella, Rainer Wanke, M. Mirra, Tomas Blazek, Dave Britton, N. Estrada-Tristan, A. Cotta Ramusino, Yu.A. Kudenko, A. Ceccucci, Andrea Bizzeti, G. Lehmann Miotto, C. Graham, Roberta Arcidiacono, P. Petrov, Z. Kucerova, E. Gushchin, A. Khotyantsev, M. Lenti, F. Bucci, M. Boretto, V. Falaleev, F. Newson, P. Cenci, Babette Döbrich, S. Shkarovskiy, C. J. Parkinson, E. Minucci, V. Fascianelli, A. Antonelli, D. Soldi, V. Sugonyaev, R. Aliberti, A. Norton, K. Massri, J. Kunze, D. Lomidze, D. E. Hutchcroft, O. Yushchenko, V. Kurshetsov, S. Kholodenko, L. Fulton, B. Checcucci, F. Duval, P. Cooper, M. Sozzi, Ilaria Neri, Vincenzo Bonaiuto, T. Enik, Douglas Bryman, Sergei Fedotov, Vladimir Ryjov, A. Mapelli, S. Giudici, Cristina Biino, A. Romano, Fausto Sargeni, A P Ostankov, J. Henshaw, Matthew Noy, E. Maurice, F. Marchetto, Piero Vicini, P. Lichard, G. D'Agostini, M. Pepe, O. Hutanu, P. Lubrano, N. De Simone, Ambrosino, F., Corvino, M., Massarotti, P., Mirra, M., Napolitano, M., Saracino, G., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and UCL - SST/IRMP - Institut de recherche en mathématique et physique
Subjects: Astrofísica, Nuclear and High Energy Physics, Heavy neutral lepton, kaon meson, kaon decay, positron, Pontecorvo–Maki–Nakagawa–Sakata matrix, Socio-culturale, FOS: Physical sciences, NA62 experiment, 7. Clean energy, 01 natural sciences, NA62, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Positron, kaon decays, heavy neutral lepton, SM extensions, PE2_2, Big Bang nucleosynthesis, SM extensions, kaon physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, ComputingMilieux_MISCELLANEOUS, Physics, Range (particle radiation), Large Hadron Collider, kaon decays, 010308 nuclear & particles physics, hep-ex, Settore FIS/04, Heavy neutral lepton, lepton flavour violation, Física, lcsh:QC1-999, kaon meson, kaon decay, positron, Production (computer science), High Energy Physics::Experiment, kaon, lcsh:Physics, Particle Physics - Experiment, Lepton
Abstract: A search for heavy neutral lepton ($N$) production in $K^+\to e^+N$ decays using the data sample collected by the NA62 experiment at CERN in 2017--2018 is reported. Upper limits of the extended neutrino mixing matrix element $|U_{e4}|^2$ are established at the level of $10^{-9}$ over most of the accessible heavy neutral lepton mass range 144--462 MeV/$c^2$, with the assumption that the lifetime exceeds 50 ns. These limits improve significantly upon those of previous production and decay searches. The $|U_{e4}|^2$ range favoured by Big Bang Nucleosynthesis is excluded up to a mass of about 340 MeV/$c^2$., Comment: Version accepted for publication in Physics Letters B (28 June 2020)
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

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

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

58 results on '"M., Zamkovsky"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources