This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model τ neutrino with a mixing strength of |Uτ4|2, corresponding to the absolute square of the extended Pontecorvo-Maki-Nakagawa-Sakata matrix element. Data from the BABAR experiment, with a total integrated luminosity of 424 fb−1, are analyzed using a kinematic approach that makes no assumptions on the model behind the origins of the HNL, its lifetime or decay modes. No significant signal is found. Upper limits on |Uτ4|2 at the 95% confidence level, depend on the HNL mass hypothesis and vary from 2.31×10−2 to 5.04×10−6 (with all uncertainties considered), across the mass range 100 <1300 MeV/c2; the more stringent limits being placed at higher masses.

Search for heavy neutral leptons using tau lepton decays at BABAR / Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Brown, DN; Kolomensky, YG; Fritsch, M; Koch, H; Cheaib, R; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Kozyrev, EA; Kravchenko, EA; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Lankford, AJ; Dey, B; Gary, JW; Long, O; Eisner, AM; Lockman, WS; Vazquez, WP; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Li, Y; Lin, DX; Middleton, S; Miyashita, TS; Ongmongkolkul, P; Oyang, J; Porter, FC; Röhrken, M; Meadows, BT; Sokoloff, MD; Smith, JG; Wagner, SR; Bernard, D; Verderi, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, IM; Piccolo, M; Rotondo, M; Zallo, A; Passaggio, S; Patrignani, C; Shuve, BJ; Lacker, HM; Bhuyan, B; Mallik, U; Chen, C; Cochran, J; Prell, S; Gritsan, A; Arnaud, N; Davier, M; Le Diberder, F; Lutz, AM; Wormser, G; Lange, DJ; Wright, DM; Coleman, JP; Hutchcroft, DE; Payne, DJ; Touramanis, C; Bevan, AJ; Di Lodovico, F; Cowan, G; Banerjee, S; Brown, DN; Davis, CL; Denig, AG; Gradl, W; Griessinger, K; Hafner, A; Schubert, KR; Barlow, RJ; Lafferty, GD; Cenci, R; Jawahery, A; Roberts, DA; Cowan, R; Robertson, SH; Seddon, RM; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Summers, DJ; De Nardo, G; Sciacca, C; Jessop, CP; LoSecco, JM; Honscheid, K; Gaz, A; Margoni, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben-Haim, E; Bomben, M; Bonneaud, GR; Calderini, G; Chauveau, J; Marchiori, G; Ocariz, J; Biasini, M; Manoni, E; Rossi, A; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Chrzaszcz, M; Forti, F; Giorgi, MA; Lusiani, A; Oberhof, B; Paoloni, E; Rama, M; Rizzo, G; Walsh, JJ; Zani, L; Smith, AJS; Anulli, F; Faccini, R; Ferrarotto, F; Ferroni, F; Pilloni, A; Bünger, C; Dittrich, S; Grünberg, O; Leddig, T; Voss, C; Waldi, R; Adye, T; Wilson, FF; Emery, S; Vasseur, G; Aston, D; Cartaro, C; Convery, MR; Ebert, M; Field, RC; Fulsom, BG; Graham, MT; Hast, C; Kim, P; Luitz, S; MacFarlane, DB; Muller, DR; Neal, H; Ratcliff, BN; Roodman, A; Sullivan, MK; Va'vra, J; Wisniewski, WJ; Purohit, MV; Wilson, JR; Sekula, SJ; Ahmed, H; Tasneem, N; Bellis, M; Burchat, PR; Puccio, EMT; Ernst, JA; Gorodeisky, R; Guttman, N; Peimer, DR; Soffer, A; Spanier, SM; Ritchie, JL; Izen, JM; Lou, XC; Bianchi, F; De Mori, F; Filippi, A; Lanceri, L; Vitale, L; Martinez-Vidal, F; Oyanguren, A; Albert, J; Beaulieu, A; Bernlochner, FU; King, GJ; Kowalewski, R; Lueck, T; Miller, C; Nugent, IM; Roney, JM; Sobie, RJ; Gershon, TJ; Harrison, PF; Latham, TE; Wu, SL. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - STAMPA. - 107:5(2023), pp. 052009.1-052009.18. [10.1103/PhysRevD.107.052009]

Search for heavy neutral leptons using tau lepton decays at BABAR

Patrignani, C;
2023

Abstract

This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model τ neutrino with a mixing strength of |Uτ4|2, corresponding to the absolute square of the extended Pontecorvo-Maki-Nakagawa-Sakata matrix element. Data from the BABAR experiment, with a total integrated luminosity of 424 fb−1, are analyzed using a kinematic approach that makes no assumptions on the model behind the origins of the HNL, its lifetime or decay modes. No significant signal is found. Upper limits on |Uτ4|2 at the 95% confidence level, depend on the HNL mass hypothesis and vary from 2.31×10−2 to 5.04×10−6 (with all uncertainties considered), across the mass range 100 <1300 MeV/c2; the more stringent limits being placed at higher masses.
2023
Search for heavy neutral leptons using tau lepton decays at BABAR / Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Brown, DN; Kolomensky, YG; Fritsch, M; Koch, H; Cheaib, R; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Kozyrev, EA; Kravchenko, EA; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Lankford, AJ; Dey, B; Gary, JW; Long, O; Eisner, AM; Lockman, WS; Vazquez, WP; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Li, Y; Lin, DX; Middleton, S; Miyashita, TS; Ongmongkolkul, P; Oyang, J; Porter, FC; Röhrken, M; Meadows, BT; Sokoloff, MD; Smith, JG; Wagner, SR; Bernard, D; Verderi, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, IM; Piccolo, M; Rotondo, M; Zallo, A; Passaggio, S; Patrignani, C; Shuve, BJ; Lacker, HM; Bhuyan, B; Mallik, U; Chen, C; Cochran, J; Prell, S; Gritsan, A; Arnaud, N; Davier, M; Le Diberder, F; Lutz, AM; Wormser, G; Lange, DJ; Wright, DM; Coleman, JP; Hutchcroft, DE; Payne, DJ; Touramanis, C; Bevan, AJ; Di Lodovico, F; Cowan, G; Banerjee, S; Brown, DN; Davis, CL; Denig, AG; Gradl, W; Griessinger, K; Hafner, A; Schubert, KR; Barlow, RJ; Lafferty, GD; Cenci, R; Jawahery, A; Roberts, DA; Cowan, R; Robertson, SH; Seddon, RM; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Summers, DJ; De Nardo, G; Sciacca, C; Jessop, CP; LoSecco, JM; Honscheid, K; Gaz, A; Margoni, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben-Haim, E; Bomben, M; Bonneaud, GR; Calderini, G; Chauveau, J; Marchiori, G; Ocariz, J; Biasini, M; Manoni, E; Rossi, A; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Chrzaszcz, M; Forti, F; Giorgi, MA; Lusiani, A; Oberhof, B; Paoloni, E; Rama, M; Rizzo, G; Walsh, JJ; Zani, L; Smith, AJS; Anulli, F; Faccini, R; Ferrarotto, F; Ferroni, F; Pilloni, A; Bünger, C; Dittrich, S; Grünberg, O; Leddig, T; Voss, C; Waldi, R; Adye, T; Wilson, FF; Emery, S; Vasseur, G; Aston, D; Cartaro, C; Convery, MR; Ebert, M; Field, RC; Fulsom, BG; Graham, MT; Hast, C; Kim, P; Luitz, S; MacFarlane, DB; Muller, DR; Neal, H; Ratcliff, BN; Roodman, A; Sullivan, MK; Va'vra, J; Wisniewski, WJ; Purohit, MV; Wilson, JR; Sekula, SJ; Ahmed, H; Tasneem, N; Bellis, M; Burchat, PR; Puccio, EMT; Ernst, JA; Gorodeisky, R; Guttman, N; Peimer, DR; Soffer, A; Spanier, SM; Ritchie, JL; Izen, JM; Lou, XC; Bianchi, F; De Mori, F; Filippi, A; Lanceri, L; Vitale, L; Martinez-Vidal, F; Oyanguren, A; Albert, J; Beaulieu, A; Bernlochner, FU; King, GJ; Kowalewski, R; Lueck, T; Miller, C; Nugent, IM; Roney, JM; Sobie, RJ; Gershon, TJ; Harrison, PF; Latham, TE; Wu, SL. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - STAMPA. - 107:5(2023), pp. 052009.1-052009.18. [10.1103/PhysRevD.107.052009]
Lees, JP; Poireau, V; Tisserand, V; Grauges, E; Palano, A; Eigen, G; Brown, DN; Kolomensky, YG; Fritsch, M; Koch, H; Cheaib, R; Hearty, C; Mattison, TS; McKenna, JA; So, RY; Blinov, VE; Buzykaev, AR; Druzhinin, VP; Kozyrev, EA; Kravchenko, EA; Serednyakov, SI; Skovpen, YI; Solodov, EP; Todyshev, KY; Lankford, AJ; Dey, B; Gary, JW; Long, O; Eisner, AM; Lockman, WS; Vazquez, WP; Chao, DS; Cheng, CH; Echenard, B; Flood, KT; Hitlin, DG; Li, Y; Lin, DX; Middleton, S; Miyashita, TS; Ongmongkolkul, P; Oyang, J; Porter, FC; Röhrken, M; Meadows, BT; Sokoloff, MD; Smith, JG; Wagner, SR; Bernard, D; Verderi, M; Bettoni, D; Bozzi, C; Calabrese, R; Cibinetto, G; Fioravanti, E; Garzia, I; Luppi, E; Santoro, V; Calcaterra, A; de Sangro, R; Finocchiaro, G; Martellotti, S; Patteri, P; Peruzzi, IM; Piccolo, M; Rotondo, M; Zallo, A; Passaggio, S; Patrignani, C; Shuve, BJ; Lacker, HM; Bhuyan, B; Mallik, U; Chen, C; Cochran, J; Prell, S; Gritsan, A; Arnaud, N; Davier, M; Le Diberder, F; Lutz, AM; Wormser, G; Lange, DJ; Wright, DM; Coleman, JP; Hutchcroft, DE; Payne, DJ; Touramanis, C; Bevan, AJ; Di Lodovico, F; Cowan, G; Banerjee, S; Brown, DN; Davis, CL; Denig, AG; Gradl, W; Griessinger, K; Hafner, A; Schubert, KR; Barlow, RJ; Lafferty, GD; Cenci, R; Jawahery, A; Roberts, DA; Cowan, R; Robertson, SH; Seddon, RM; Neri, N; Palombo, F; Cremaldi, L; Godang, R; Summers, DJ; De Nardo, G; Sciacca, C; Jessop, CP; LoSecco, JM; Honscheid, K; Gaz, A; Margoni, M; Simi, G; Simonetto, F; Stroili, R; Akar, S; Ben-Haim, E; Bomben, M; Bonneaud, GR; Calderini, G; Chauveau, J; Marchiori, G; Ocariz, J; Biasini, M; Manoni, E; Rossi, A; Batignani, G; Bettarini, S; Carpinelli, M; Casarosa, G; Chrzaszcz, M; Forti, F; Giorgi, MA; Lusiani, A; Oberhof, B; Paoloni, E; Rama, M; Rizzo, G; Walsh, JJ; Zani, L; Smith, AJS; Anulli, F; Faccini, R; Ferrarotto, F; Ferroni, F; Pilloni, A; Bünger, C; Dittrich, S; Grünberg, O; Leddig, T; Voss, C; Waldi, R; Adye, T; Wilson, FF; Emery, S; Vasseur, G; Aston, D; Cartaro, C; Convery, MR; Ebert, M; Field, RC; Fulsom, BG; Graham, MT; Hast, C; Kim, P; Luitz, S; MacFarlane, DB; Muller, DR; Neal, H; Ratcliff, BN; Roodman, A; Sullivan, MK; Va'vra, J; Wisniewski, WJ; Purohit, MV; Wilson, JR; Sekula, SJ; Ahmed, H; Tasneem, N; Bellis, M; Burchat, PR; Puccio, EMT; Ernst, JA; Gorodeisky, R; Guttman, N; Peimer, DR; Soffer, A; Spanier, SM; Ritchie, JL; Izen, JM; Lou, XC; Bianchi, F; De Mori, F; Filippi, A; Lanceri, L; Vitale, L; Martinez-Vidal, F; Oyanguren, A; Albert, J; Beaulieu, A; Bernlochner, FU; King, GJ; Kowalewski, R; Lueck, T; Miller, C; Nugent, IM; Roney, JM; Sobie, RJ; Gershon, TJ; Harrison, PF; Latham, TE; Wu, SL
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