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Title: Searches for lepton number violation and resonances in K ± → πμμ decays

Abstract

The NA48/2 experiment at CERN collected a large sample of charged kaon decays to final states with multiple charged particles in 2003$-$2004. A new upper limit on the rate of the lepton number violating decay $$K^{\pm}\to\pi^{\mp}\mu^{\pm}\mu^{\pm}$$ is reported: $$\mathcal{B}(K^{\pm}\to\pi^{\mp}\mu^{\pm}\mu^{\pm})<8.6 \times 10^{-11}$$ at 90% CL. Searches for two-body resonances $X$ in $$K^{\pm}\to\pi\mu\mu$$ decays (such as heavy neutral leptons $$N_4$$ and inflatons $$\chi$$) are also presented. Finally, in the absence of signals, upper limits are set on the products of branching fractions $$\mathcal{B}(K^{\pm}\to\mu^{\pm}N_4)\mathcal{B}(N_4\to\pi\mu)$$ and $$\mathcal{B}(K^{\pm}\to\pi^{\pm}X)\mathcal{B}(X\to\mu^+\mu^-)$$ for ranges of assumed resonance masses and lifetimes. The limits are in the $$(10^{-11},10^{-9})$$ range for resonance lifetimes below 100 ps.

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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
The NA48/2 collaboration
OSTI Identifier:
1367908
Alternate Identifier(s):
OSTI ID: 1369395
Report Number(s):
FERMILAB-PUB-16-700-TD; CERN-EP-2016-310
Journal ID: ISSN 0370-2693; 1503402
Grant/Contract Number:
AC02-07CH11359; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 769; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Batley, J. R., Kalmus, G., Lazzeroni, C., Munday, D. J., Slater, M. W., Wotton, S. A., Arcidiacono, R., Bocquet, G., Cabibbo, N., Ceccucci, A., Cundy, D., Falaleev, V., Fidecaro, M., Gatignon, L., Gonidec, A., Kubischta, W., Maier, A., Massri, K., Norton, A., Patel, M., Peters, A., Balev, S., Frabetti, P. L., Gersabeck, E., Goudzovski, E., Hristov, P., Kekelidze, V., Kozhuharov, V., Litov, L., Madigozhin, D., Molokanova, N., Polenkevich, I., Potrebenikov, Yu., Stoynev, S., Zinchenko, A., Monnier, E., Swallow, E., Winston, R., Rubin, P., Walker, A., Baldini, W., Cotta Ramusino, A., Dalpiaz, P., Damiani, C., Fiorini, M., Gianoli, A., Martini, M., Petrucci, F., Savrié, M., Scarpa, M., Wahl, H., Bizzeti, A., Lenti, M., Veltri, M., Calvetti, M., Celeghini, E., Iacopini, E., Ruggiero, G., Behler, M., Eppard, K., Kleinknecht, K., Marouelli, P., Masetti, L., Moosbrugger, U., Morales Morales, C., Renk, B., Wache, M., Wanke, R., Winhart, A., Coward, D., Dabrowski, A., Fonseca Martin, T., Shieh, M., Szleper, M., Velasco, M., Wood, M. D., Cenci, P., Pepe, M., Petrucci, M. C., Anzivino, G., Imbergamo, E., Nappi, A., Piccini, M., Raggi, M., Valdata-Nappi, M., Cerri, C., Fantechi, R., Collazuol, G., DiLella, L., Lamanna, G., Mannelli, I., Michetti, A., Costantini, F., Doble, N., Fiorini, L., Giudici, S., Pierazzini, G., Sozzi, M., Venditti, S., Bloch-Devaux, B., Cheshkov, C., Chèze, J. B., De Beer, M., Derré, J., Marel, G., Mazzucato, E., Peyaud, B., Vallage, B., Holder, M., Ziolkowski, M., Biino, C., Cartiglia, N., Marchetto, F., Bifani, S., Clemencic, M., Goy Lopez, S., Dibon, H., Jeitler, M., Markytan, M., Mikulec, I., Neuhofer, G., and Widhalm, L. Searches for lepton number violation and resonances in K ± → πμμ decays. United States: N. p., 2017. Web. doi:10.1016/j.physletb.2017.03.029.
Batley, J. R., Kalmus, G., Lazzeroni, C., Munday, D. J., Slater, M. W., Wotton, S. A., Arcidiacono, R., Bocquet, G., Cabibbo, N., Ceccucci, A., Cundy, D., Falaleev, V., Fidecaro, M., Gatignon, L., Gonidec, A., Kubischta, W., Maier, A., Massri, K., Norton, A., Patel, M., Peters, A., Balev, S., Frabetti, P. L., Gersabeck, E., Goudzovski, E., Hristov, P., Kekelidze, V., Kozhuharov, V., Litov, L., Madigozhin, D., Molokanova, N., Polenkevich, I., Potrebenikov, Yu., Stoynev, S., Zinchenko, A., Monnier, E., Swallow, E., Winston, R., Rubin, P., Walker, A., Baldini, W., Cotta Ramusino, A., Dalpiaz, P., Damiani, C., Fiorini, M., Gianoli, A., Martini, M., Petrucci, F., Savrié, M., Scarpa, M., Wahl, H., Bizzeti, A., Lenti, M., Veltri, M., Calvetti, M., Celeghini, E., Iacopini, E., Ruggiero, G., Behler, M., Eppard, K., Kleinknecht, K., Marouelli, P., Masetti, L., Moosbrugger, U., Morales Morales, C., Renk, B., Wache, M., Wanke, R., Winhart, A., Coward, D., Dabrowski, A., Fonseca Martin, T., Shieh, M., Szleper, M., Velasco, M., Wood, M. D., Cenci, P., Pepe, M., Petrucci, M. C., Anzivino, G., Imbergamo, E., Nappi, A., Piccini, M., Raggi, M., Valdata-Nappi, M., Cerri, C., Fantechi, R., Collazuol, G., DiLella, L., Lamanna, G., Mannelli, I., Michetti, A., Costantini, F., Doble, N., Fiorini, L., Giudici, S., Pierazzini, G., Sozzi, M., Venditti, S., Bloch-Devaux, B., Cheshkov, C., Chèze, J. B., De Beer, M., Derré, J., Marel, G., Mazzucato, E., Peyaud, B., Vallage, B., Holder, M., Ziolkowski, M., Biino, C., Cartiglia, N., Marchetto, F., Bifani, S., Clemencic, M., Goy Lopez, S., Dibon, H., Jeitler, M., Markytan, M., Mikulec, I., Neuhofer, G., & Widhalm, L. Searches for lepton number violation and resonances in K ± → πμμ decays. United States. doi:10.1016/j.physletb.2017.03.029.
Batley, J. R., Kalmus, G., Lazzeroni, C., Munday, D. J., Slater, M. W., Wotton, S. A., Arcidiacono, R., Bocquet, G., Cabibbo, N., Ceccucci, A., Cundy, D., Falaleev, V., Fidecaro, M., Gatignon, L., Gonidec, A., Kubischta, W., Maier, A., Massri, K., Norton, A., Patel, M., Peters, A., Balev, S., Frabetti, P. L., Gersabeck, E., Goudzovski, E., Hristov, P., Kekelidze, V., Kozhuharov, V., Litov, L., Madigozhin, D., Molokanova, N., Polenkevich, I., Potrebenikov, Yu., Stoynev, S., Zinchenko, A., Monnier, E., Swallow, E., Winston, R., Rubin, P., Walker, A., Baldini, W., Cotta Ramusino, A., Dalpiaz, P., Damiani, C., Fiorini, M., Gianoli, A., Martini, M., Petrucci, F., Savrié, M., Scarpa, M., Wahl, H., Bizzeti, A., Lenti, M., Veltri, M., Calvetti, M., Celeghini, E., Iacopini, E., Ruggiero, G., Behler, M., Eppard, K., Kleinknecht, K., Marouelli, P., Masetti, L., Moosbrugger, U., Morales Morales, C., Renk, B., Wache, M., Wanke, R., Winhart, A., Coward, D., Dabrowski, A., Fonseca Martin, T., Shieh, M., Szleper, M., Velasco, M., Wood, M. D., Cenci, P., Pepe, M., Petrucci, M. C., Anzivino, G., Imbergamo, E., Nappi, A., Piccini, M., Raggi, M., Valdata-Nappi, M., Cerri, C., Fantechi, R., Collazuol, G., DiLella, L., Lamanna, G., Mannelli, I., Michetti, A., Costantini, F., Doble, N., Fiorini, L., Giudici, S., Pierazzini, G., Sozzi, M., Venditti, S., Bloch-Devaux, B., Cheshkov, C., Chèze, J. B., De Beer, M., Derré, J., Marel, G., Mazzucato, E., Peyaud, B., Vallage, B., Holder, M., Ziolkowski, M., Biino, C., Cartiglia, N., Marchetto, F., Bifani, S., Clemencic, M., Goy Lopez, S., Dibon, H., Jeitler, M., Markytan, M., Mikulec, I., Neuhofer, G., and Widhalm, L. Sat . "Searches for lepton number violation and resonances in K ± → πμμ decays". United States. doi:10.1016/j.physletb.2017.03.029. https://www.osti.gov/servlets/purl/1367908.
@article{osti_1367908,
title = {Searches for lepton number violation and resonances in K ± → πμμ decays},
author = {Batley, J. R. and Kalmus, G. and Lazzeroni, C. and Munday, D. J. and Slater, M. W. and Wotton, S. A. and Arcidiacono, R. and Bocquet, G. and Cabibbo, N. and Ceccucci, A. and Cundy, D. and Falaleev, V. and Fidecaro, M. and Gatignon, L. and Gonidec, A. and Kubischta, W. and Maier, A. and Massri, K. and Norton, A. and Patel, M. and Peters, A. and Balev, S. and Frabetti, P. L. and Gersabeck, E. and Goudzovski, E. and Hristov, P. and Kekelidze, V. and Kozhuharov, V. and Litov, L. and Madigozhin, D. and Molokanova, N. and Polenkevich, I. and Potrebenikov, Yu. and Stoynev, S. and Zinchenko, A. and Monnier, E. and Swallow, E. and Winston, R. and Rubin, P. and Walker, A. and Baldini, W. and Cotta Ramusino, A. and Dalpiaz, P. and Damiani, C. and Fiorini, M. and Gianoli, A. and Martini, M. and Petrucci, F. and Savrié, M. and Scarpa, M. and Wahl, H. and Bizzeti, A. and Lenti, M. and Veltri, M. and Calvetti, M. and Celeghini, E. and Iacopini, E. and Ruggiero, G. and Behler, M. and Eppard, K. and Kleinknecht, K. and Marouelli, P. and Masetti, L. and Moosbrugger, U. and Morales Morales, C. and Renk, B. and Wache, M. and Wanke, R. and Winhart, A. and Coward, D. and Dabrowski, A. and Fonseca Martin, T. and Shieh, M. and Szleper, M. and Velasco, M. and Wood, M. D. and Cenci, P. and Pepe, M. and Petrucci, M. C. and Anzivino, G. and Imbergamo, E. and Nappi, A. and Piccini, M. and Raggi, M. and Valdata-Nappi, M. and Cerri, C. and Fantechi, R. and Collazuol, G. and DiLella, L. and Lamanna, G. and Mannelli, I. and Michetti, A. and Costantini, F. and Doble, N. and Fiorini, L. and Giudici, S. and Pierazzini, G. and Sozzi, M. and Venditti, S. and Bloch-Devaux, B. and Cheshkov, C. and Chèze, J. B. and De Beer, M. and Derré, J. and Marel, G. and Mazzucato, E. and Peyaud, B. and Vallage, B. and Holder, M. and Ziolkowski, M. and Biino, C. and Cartiglia, N. and Marchetto, F. and Bifani, S. and Clemencic, M. and Goy Lopez, S. and Dibon, H. and Jeitler, M. and Markytan, M. and Mikulec, I. and Neuhofer, G. and Widhalm, L.},
abstractNote = {The NA48/2 experiment at CERN collected a large sample of charged kaon decays to final states with multiple charged particles in 2003$-$2004. A new upper limit on the rate of the lepton number violating decay $K^{\pm}\to\pi^{\mp}\mu^{\pm}\mu^{\pm}$ is reported: $\mathcal{B}(K^{\pm}\to\pi^{\mp}\mu^{\pm}\mu^{\pm})<8.6 \times 10^{-11}$ at 90% CL. Searches for two-body resonances $X$ in $K^{\pm}\to\pi\mu\mu$ decays (such as heavy neutral leptons $N_4$ and inflatons $\chi$) are also presented. Finally, in the absence of signals, upper limits are set on the products of branching fractions $\mathcal{B}(K^{\pm}\to\mu^{\pm}N_4)\mathcal{B}(N_4\to\pi\mu)$ and $\mathcal{B}(K^{\pm}\to\pi^{\pm}X)\mathcal{B}(X\to\mu^+\mu^-)$ for ranges of assumed resonance masses and lifetimes. The limits are in the $(10^{-11},10^{-9})$ range for resonance lifetimes below 100 ps.},
doi = {10.1016/j.physletb.2017.03.029},
journal = {Physics Letters. Section B},
number = C,
volume = 769,
place = {United States},
year = {Sat Mar 18 00:00:00 EDT 2017},
month = {Sat Mar 18 00:00:00 EDT 2017}
}

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