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Article ; Online: Search for the rare decays K(L)→π0π0μ+μ- and K(L)→π0π0X0→π0π0μ+μ-.

Abouzaid, E / Arenton, M / Barker, A R / Bellantoni, L / Blucher, E / Bock, G J / Cheu, E / Coleman, R / Corcoran, M D / Cox, B / Erwin, A R / Escobar, C O / Glazov, A / Golossanov, A / Gomes, R A / Gouffon, P / Hsiung, Y B / Jensen, D A / Kessler, R /

Kotera, K / Ledovskoy, A / McBride, P L / Monnier, E / Nguyen, H / Niclasen, R / Phillips, D G / Ping, H / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Velissaris, C / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M J / Winston, R / Worcester, E T / Worcester, M / Yamanaka, T / Zimmerman, E D / Zukanovich, R F

Physical review letters

2011 Volume 107, Issue 20, Page(s) 201803

Abstract: The KTeV E799 experiment has conducted a search for the rare decays, K(L)→π(0)π(0)μ(+)μ(-) and K(L)→π(0)π(0)X(0)→π(0)π(0)μ(+)μ(-), where the X(0) is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3 ± 0.5) MeV/ ...

Abstract	The KTeV E799 experiment has conducted a search for the rare decays, K(L)→π(0)π(0)μ(+)μ(-) and K(L)→π(0)π(0)X(0)→π(0)π(0)μ(+)μ(-), where the X(0) is a possible new neutral boson that was reported by the HyperCP experiment with a mass of (214.3 ± 0.5) MeV/c(2). We find no evidence for either decay. We obtain upper limits of Br(K(L)→π(0)π(0)X(0)→π(0)π(0)μ(+)μ(-)) < 1.0 × 10(-10) and Br(K(L)→π(0)π(0)μ(+)μ(-)) < 9.2 × 10(-11) at the 90% confidence level. This result rules out the pseudoscalar X(0) as an explanation of the HyperCP result under the scenario that the dsX(0) coupling is completely real.
Language	English
Publishing date	2011-11-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.107.201803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Determination of the parity of the neutral pion via its four-electron decay.

Kotera, K / Ledovskoy, A / McBride, P L / Monnier, E / Nguyen, H / Niclasen, R / Phillips, D G / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M J / Winstein, B / Winston, R / Worcester, E T / Yamanaka, T / Zimmerman, E D / Zukanovich, R F

Physical review letters

2008 Volume 100, Issue 18, Page(s) 182001

Abstract: We present a new determination of the parity of the neutral pion via the double Dalitz decay pi0-->e+e-e+e-. Our sample, which consists of 30,511 candidate decays, was collected from KL-->pi0pi0pi0 decays in flight at the KTeV-E799 experiment at Fermi ... ...

Abstract	We present a new determination of the parity of the neutral pion via the double Dalitz decay pi0-->e+e-e+e-. Our sample, which consists of 30,511 candidate decays, was collected from KL-->pi0pi0pi0 decays in flight at the KTeV-E799 experiment at Fermi National Accelerator Laboratory. We confirm the negative pi0 parity and place a limit on scalar contributions to the pi0-->e+e-e+e- decay amplitude of less than 3.3% assuming CPT conservation. The pi0gammagamma form factor is well described by a momentum-dependent model with a slope parameter fit to the final state phase-space distribution. Additionally, we have measured the branching ratio of this mode to be B(pi0-->e+e-e+e-)=(3.26+/-0.18)x10(-5).
Language	English
Publishing date	2008-05-09
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.100.182001
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Search for lepton-flavor-violating decays of the neutral kaon.

Abouzaid, E / Arenton, M / Barker, A R / Bellantoni, L / Bellavance, A / Blucher, E / Bock, G J / Cheu, E / Coleman, R / Corcoran, M D / Cox, B / Erwin, A R / Escobar, C O / Glazov, A / Golossanov, A / Gomes, R A / Gouffon, P / Hsiung, Y B / Jensen, D A /

Kessler, R / Kotera, K / Ledovskoy, A / McBride, P L / Monnier, E / Nguyen, H / Niclasen, R / Ii, D G Phillips / Ping, H / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M J / Winstein, B / Winston, R / Wolfe, C / Worcester, E T / Worcester, M / Yamanaka, T / Zimmerman, E D / Zukanovich, R F

Physical review letters

2008 Volume 100, Issue 13, Page(s) 131803

Abstract: The Fermilab KTeV experiment has searched for lepton-flavor-violating decays of the K(L) meson in three decay modes. We observe no events in the signal region for any of the modes studied, and we set the following upper limits for their branching ratios ... ...

Abstract	The Fermilab KTeV experiment has searched for lepton-flavor-violating decays of the K(L) meson in three decay modes. We observe no events in the signal region for any of the modes studied, and we set the following upper limits for their branching ratios at the 90% C.L.: BR(K(L) --> pi(0) micro(+/-) e(-/+)) <7.6 x 10(-11); BR(K(L) --> pi(0)pi(0) micro(+/-) e(-/+)) <1.7 x 10(-10); BR(pi(0) --> micro(+/-) e(-/+)) <3.6 x 10(-10). This result represents a factor of 82 improvement in the branching ratio limit for K(L) --> pi(0) micro(+/-) e(-/+) and is the first reported limit for K(L) --> pi(0)pi(0) micro(+/-) e(-/+).
Language	English
Publishing date	2008-04-04
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.100.131803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: First observation of K{L}-->pi{+/-}e{-/+}nue{+}e{-}.

Kotera, K / Ledovskoy, A / McBride, P L / Monnier, E / Nelson, K S / Nguyen, H / Niclasen, R / Phillips, D G / Ping, H / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Velissaris, C / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M J / Winstein, B / Winston, R / Worcester, E T / Worcester, M / Yamanaka, T / Zimmerman, E D / Zukanovich, R F

Physical review letters

2007 Volume 99, Issue 8, Page(s) 81803

Abstract: This Letter is the first report of the K{L}-->pi{+/-}e{-/+}nue{+}e{-} decay. Based on 19 208+/-144 events, we determine the branching fraction, B(K{L}-->pi{+/-}e{-/+}nue{+}e{-}M_{e{+}e{-}}>5 MeV/c{2},E{e{+}e{-}}{*}>30 MeV)=(1.285+/-0.041)x10{-5}, and ... ...

Abstract	This Letter is the first report of the K{L}-->pi{+/-}e{-/+}nue{+}e{-} decay. Based on 19 208+/-144 events, we determine the branching fraction, B(K{L}-->pi{+/-}e{-/+}nue{+}e{-}M_{e{+}e{-}}>5 MeV/c{2},E{e{+}e{-}}{*}>30 MeV)=(1.285+/-0.041)x10{-5}, and Gamma(K{e3ee}M{e{+}e{-}}>5 MeV/c{2})/Gamma(K{e3})=[4.57+/-0.04(stat)+/-0.14(syst)]x10{-5}. This ratio agrees with a theoretical prediction based on chiral perturbation theory (ChPT) calculated to O(p{4}). The measured kinematical distributions agree with those predicted by just ChPT O(p{4}), but show significant disagreement with ones predicted by leading-order ChPT.
Language	English
Publishing date	2007-08-24
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.99.081803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measurements of the decay KL-->e+ e- gamma.

Abouzaid, E / Arenton, M / Barker, A R / Bellantoni, L / Blucher, E / Bock, G J / Cheu, E / Coleman, R / Corcoran, M D / Cox, B / Erwin, A R / Glazov, A / Golossanov, A / Hsiung, Y B / Jensen, D A / Kessler, R / Kobrak, H G E / Kotera, K / LaDue, J /

Ledovskoy, A / McBride, P L / Monnier, E / Nguyen, H / Niclasen, R / Ramberg, E J / Ray, R E / Ronquest, M / Shields, J / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M J / Winston, R / Worcester, E T / Yamanaka, T / Zimmerman, E D

Physical review letters

2007 Volume 99, Issue 5, Page(s) 51804

Abstract: The E799-II (KTeV) experiment at Fermilab has collected 83 262 K(L)-->e+ e- gamma(gamma) events above a background of 79 events. We measure a decay width, normalized to the K(L)-->pi0pi0pi(D)0 (pi0-->gammagamma, pi0-->gammagamma, pi(D0-->e+ e- gamma( ... ...

Abstract	The E799-II (KTeV) experiment at Fermilab has collected 83 262 K(L)-->e+ e- gamma(gamma) events above a background of 79 events. We measure a decay width, normalized to the K(L)-->pi0pi0pi(D)0 (pi0-->gammagamma, pi0-->gammagamma, pi(D0-->e+ e- gamma(gamma)) decay width, of Gamma(K(L)-->e+e-gamma(gamma))/Gamma(K(L)-->pi0pi0pi(D)0)=(1.3302+/-0.0046(stat)+/-0.0102(syst)) x 10(-3). We also measure parameters of two K(L)gammagamma form factor models. In the Bergström-Massó-Singer parametrization, we find Calpha(K)= -0.517 +/- 0.030(stat) +/- 0.022(syst). We separately fit for the first parameter of the D'Ambrosio-Isidori-Portolés model and find alpha(DIP)= -1.729 +/- 0.043(stat) +/- 0.028(syst).
Language	English
Publishing date	2007-08-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.99.051804
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Measurement of the K0 charge radius and a CP-violating asymmetry and a search for CP-violating E1 direct photon emission in the rare decay KL--> pi+ pi- e+ e-.

Abouzaid, E / Arenton, M / Barker, A R / Bellantoni, L / Bellavance, A / Blucher, E / Bock, G J / Cheu, E / Coleman, R / Corcoran, M D / Corti, G / Cox, B / Erwin, A R / Escobar, C O / Glazov, A / Golossanov, A / Gomes, R A / Gouffon, P / Hanagaki, K /

Hsiung, Y B / Huang, H / Jensen, D A / Kessler, R / Kotera, K / Ledovskoy, A / McBride, P L / Monnier, E / Nelson, K S / Nguyen, H / Niclasen, R / Ping, H / Qi, X R / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Shields, J / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Velissaris, C / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M / Winstein, B / Winston, R / Worchester, E T / Worchester, M / Yamanaka, T / Zimmerman, E D / Zukanovich, R F

Physical review letters

2006 Volume 96, Issue 10, Page(s) 101801

Abstract: Using the complete KTeV data set of 5,241 candidate K(L)--> pi(+) pi(-) e(+) e(-) decays (including an estimated background of 204 +/- 14 events), we have measured the coupling g(CR)= 0.163 +/- 0.0149(stat) +/- 0.023(syst) of the CP conserving charge ... ...

Abstract	Using the complete KTeV data set of 5,241 candidate K(L)--> pi(+) pi(-) e(+) e(-) decays (including an estimated background of 204 +/- 14 events), we have measured the coupling g(CR)= 0.163 +/- 0.0149(stat) +/- 0.023(syst) of the CP conserving charge radius process and from it determined a K(0) charge radius of <r(2)(K(0))> = [-0.077 +/- 0.007(stat) +/- 0.011(syst)]fm(2). We have determined a first experimental upper limit of 0.04 (90% C.L.) /g(e1)/ / /g(M1)/ of the couplings for the E1 and M1 direct photon emission processes. We also report the measurement of /g(M1)/ including a vector form factor /g(M1)/(1 + (a(1)/a(2))/((M(2)(p)-(M(2)(k))= 2M(K)E(gamma*)), where vector /g(M1)/= 1.11+/- 0.12(stat) +/- 0.08(syst) and a(1)/a(2) = [-0.744 +/- 0.027(stat) +/- 0.032(syst)] GeV(2)/c(2). Finally, a CP-violating asymmetry of [13.6 +/- 1.4(stat) +/- 1.5(syst)]% in the CP and T odd angle phi between the decay planes of the e(+) e(-) and pi(+) pi(-) pairs in the K(L) center of mass is reported.
Language	English
Publishing date	2006-03-17
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.96.101801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: A determination of the Cabibbo-Kobayashi-Maskawa parameter |V us| using KL decays.

Alexopoulos, T / Arenton, M / Barbosa, R F / Barker, A R / Bellantoni, L / Bellavance, A / Blucher, E / Bock, G J / Cheu, E / Childress, S / Coleman, R / Corcoran, M D / Cox, B / Erwin, A R / Ford, R / Glazov, A / Golossanov, A / Graham, J / Hamm, J /

Hanagaki, K / Hsiung, Y B / Huang, H / Jejer, V / Jensen, D A / Kessler, R / Kobrak, H G E / Kotera, K / LaDue, J / Ledovskoy, A / McBride, P L / Monnier, E / Nelson, K S / Nguyen, H / Niclasen, R / Prasad, V / Qi, X R / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Shanahan, P / Shields, J / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M / Winstein, B / Winston, R / Worcester, E T / Yamanaka, T / Zimmerman, E D

Physical review letters

2004 Volume 93, Issue 18, Page(s) 181802

Abstract: We present a determination of the Cabibbo-Kobayashi-Maskawa parameter |V(us)| based on new measurements of the six largest K(L) branching fractions and semileptonic form factors by the KTeV (E832) experiment at Fermilab. We find |V(us)|=0.2252+/-0.0008( ... ...

Abstract	We present a determination of the Cabibbo-Kobayashi-Maskawa parameter \|V(us)\| based on new measurements of the six largest K(L) branching fractions and semileptonic form factors by the KTeV (E832) experiment at Fermilab. We find \|V(us)\|=0.2252+/-0.0008(KTeV)+/-0.0021(ext), where the errors are from KTeV measurements and from external sources. We also use the measured branching fractions to determine the CP violation parameter \|eta(+-)\|=(2.228+/-0.005(KTeV)+/-0.009(ext))x10(-3).
Language	English
Publishing date	2004-10-29
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.93.181802
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Constraints on Minute-Scale Transient Astrophysical Neutrino Sources.

Aartsen, M G / Ackermann, M / Adams, J / Aguilar, J A / Ahlers, M / Ahrens, M / Al Samarai, I / Altmann, D / Andeen, K / Anderson, T / Ansseau, I / Anton, G / Argüelles, C / Auffenberg, J / Axani, S / Backes, P / Bagherpour, H / Bai, X / Barbano, A /

Barron, J P / Barwick, S W / Baum, V / Bay, R / Beatty, J J / Becker Tjus, J / Becker, K-H / BenZvi, S / Berley, D / Bernardini, E / Besson, D Z / Binder, G / Bindig, D / Blaufuss, E / Blot, S / Bohm, C / Börner, M / Bos, F / Böser, S / Botner, O / Bourbeau, E / Bourbeau, J / Bradascio, F / Braun, J / Brenzke, M / Bretz, H-P / Bron, S / Brostean-Kaiser, J / Burgman, A / Busse, R S / Carver, T / Cheung, E / Chirkin, D / Christov, A / Clark, K / Classen, L / Collin, G H / Conrad, J M / Coppin, P / Correa, P / Cowen, D F / Cross, R / Dave, P / Day, M / de André, J P A M / De Clercq, C / DeLaunay, J J / Dembinski, H / Deoskar, K / De Ridder, S / Desiati, P / de Vries, K D / de Wasseige, G / de With, M / DeYoung, T / Díaz-Vélez, J C / di Lorenzo, V / Dujmovic, H / Dumm, J P / Dunkman, M / Dvorak, E / Eberhardt, B / Ehrhardt, T / Eichmann, B / Eller, P / Evans, P A / Evenson, P A / Fahey, S / Fazely, A R / Felde, J / Filimonov, K / Finley, C / Franckowiak, A / Friedman, E / Fritz, A / Gaisser, T K / Gallagher, J / Ganster, E / Gerhardt, L / Ghorbani, K / Giang, W / Glauch, T / Glüsenkamp, T / Goldschmidt, A / Gonzalez, J G / Grant, D / Griffith, Z / Haack, C / Hallgren, A / Halve, L / Halzen, F / Hanson, K / Hebecker, D / Heereman, D / Helbing, K / Hellauer, R / Hickford, S / Hignight, J / Hill, G C / Hoffman, K D / Hoffmann, R / Hoinka, T / Hokanson-Fasig, B / Hoshina, K / Huang, F / Huber, M / Hultqvist, K / Hünnefeld, M / Hussain, R / In, S / Iovine, N / Ishihara, A / Jacobi, E / Japaridze, G S / Jeong, M / Jero, K / Jones, B J P / Kalaczynski, P / Kang, W / Kappes, A / Kappesser, D / Karg, T / Karle, A / Katz, U / Kauer, M / Keivani, A / Kelley, J L / Kheirandish, A / Kim, J / Kintscher, T / Kiryluk, J / Kittler, T / Klein, S R / Koirala, R / Kolanoski, H / Köpke, L / Kopper, C / Kopper, S / Koschinsky, J P / Koskinen, D J / Kowalski, M / Krings, K / Kroll, M / Krückl, G / Kunwar, S / Kurahashi, N / Kyriacou, A / Labare, M / Lanfranchi, J L / Larson, M J / Lauber, F / Leonard, K / Leuermann, M / Liu, Q R / Lohfink, E / Lozano Mariscal, C J / Lu, L / Lünemann, J / Luszczak, W / Madsen, J / Maggi, G / Mahn, K B M / Makino, Y / Mancina, S / Mariş, I C / Maruyama, R / Mase, K / Maunu, R / Meagher, K / Medici, M / Meier, M / Menne, T / Merino, G / Meures, T / Miarecki, S / Micallef, J / Momenté, G / Montaruli, T / Moore, R W / Moulai, M / Nagai, R / Nahnhauer, R / Nakarmi, P / Naumann, U / Neer, G / Niederhausen, H / Nowicki, S C / Nygren, D R / Obertacke Pollmann, A / Olivas, A / O'Murchadha, A / Osborne, J P / O'Sullivan, E / Palczewski, T / Pandya, H / Pankova, D V / Peiffer, P / Pepper, J A / Pérez de Los Heros, C / Pieloth, D / Pinat, E / Pizzuto, A / Plum, M / Price, P B / Przybylski, G T / Raab, C / Rameez, M / Rauch, L / Rawlins, K / Rea, I C / Reimann, R / Relethford, B / Renzi, G / Resconi, E / Rhode, W / Richman, M / Robertson, S / Rongen, M / Rott, C / Ruhe, T / Ryckbosch, D / Rysewyk, D / Safa, I / Sanchez Herrera, S E / Sandrock, A / Sandroos, J / Santander, M / Sarkar, S / Satalecka, K / Schaufel, M / Schlunder, P / Schmidt, T / Schneider, A / Schneider, J / Schöneberg, S / Schumacher, L / Sclafani, S / Seckel, D / Seunarine, S / Soedingrekso, J / Soldin, D / Song, M / Spiczak, G M / Spiering, C / Stachurska, J / Stamatikos, M / Stanev, T / Stasik, A / Stein, R / Stettner, J / Steuer, A / Stezelberger, T / Stokstad, R G / Stößl, A / Strotjohann, N L / Stuttard, T / Sullivan, G W / Sutherland, M / Taboada, I / Tenholt, F / Ter-Antonyan, S / Terliuk, A / Tilav, S / Toale, P A / Tobin, M N / Tönnis, C / Toscano, S / Tosi, D / Tselengidou, M / Tung, C F / Turcati, A / Turley, C F / Ty, B / Unger, E / Unland Elorrieta, M A / Usner, M / Vandenbroucke, J / Van Driessche, W / van Eijk, D / van Eijndhoven, N / Vanheule, S / van Santen, J / Vraeghe, M / Walck, C / Wallace, A / Wallraff, M / Wandler, F D / Wandkowsky, N / Watson, T B / Waza, A / Weaver, C / Weiss, M J / Wendt, C / Werthebach, J / Westerhoff, S / Whelan, B J / Whitehorn, N / Wiebe, K / Wiebusch, C H / Wille, L / Williams, D R / Wills, L / Wolf, M / Wood, J / Wood, T R / Woolsey, E / Woschnagg, K / Wrede, G / Xu, D L / Xu, X W / Xu, Y / Yanez, J P / Yodh, G / Yoshida, S / Yuan, T

Physical review letters

2019 Volume 122, Issue 5, Page(s) 51102

Abstract: High-energy neutrino emission has been predicted for several short-lived astrophysical transients including gamma-ray bursts (GRBs), core-collapse supernovae with choked jets, and neutron star mergers. IceCube's optical and x-ray follow-up program ... ...

Abstract	High-energy neutrino emission has been predicted for several short-lived astrophysical transients including gamma-ray bursts (GRBs), core-collapse supernovae with choked jets, and neutron star mergers. IceCube's optical and x-ray follow-up program searches for such transient sources by looking for two or more muon neutrino candidates in directional coincidence and arriving within 100 s. The measured rate of neutrino alerts is consistent with the expected rate of chance coincidences of atmospheric background events and no likely electromagnetic counterparts have been identified in Swift follow-up observations. Here, we calculate generic bounds on the neutrino flux of short-lived transient sources. Assuming an E^{-2.5} neutrino spectrum, we find that the neutrino flux of rare sources, like long gamma-ray bursts, is constrained to <5% of the detected astrophysical flux and the energy released in neutrinos (100 GeV to 10 PeV) by a median bright GRB-like source is <10^{52.5} erg. For a harder E^{-2.13} neutrino spectrum up to 30% of the flux could be produced by GRBs and the allowed median source energy is <10^{52} erg. A hypothetical population of transient sources has to be more common than 10^{-5} Mpc^{-3} yr^{-1} (5×10^{-8} Mpc^{-3} yr^{-1} for the E^{-2.13} spectrum) to account for the complete astrophysical neutrino flux.
Language	English
Publishing date	2019-03-01
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.122.051102
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Article: Observation of the decay xi0 --> sigma+ mu- nu(mu).

Abouzaid, E / Alexopoulos, T / Arenton, M / Barbosa, R F / Barker, A R / Bellantoni, L / Bellavance, A / Blucher, E / Bock, G J / Cheu, E / Coleman, R / Corcoran, M D / Cox, B / Erwin, A R / Escobar, C O / Glazov, A / Golossanov, A / Gomes, R A / Gouffon, P /

Hanagaki, K / Hsiung, Y B / Huang, H / Jensen, D A / Kessler, R / Kotera, K / LaDue, J / Ledovskoy, A / McBride, P L / Monnier, E / Nelson, K S / Nguyen, H / Niclasen, R / Ping, H / Prasad, V / Qi, X R / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Shields, J / Slater, W / Smith, D / Solomey, N / Swallow, E C / Toale, P A / Tschirhart, R / Velissaris, C / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M / Winstein, B / Winston, R / Worcester, E T / Worcester, M / Yamanaka, T / Zimmerman, E D / Zukanovich, R F

Physical review letters

2005 Volume 95, Issue 8, Page(s) 81801

Abstract: The xi0 muon semileptonic decay has been observed for the first time with nine identified events using the KTeV beam line and detector at Fermilab. The decay is normalized to the xi0 beta decay mode and yields a value for the ratio of decay rates gamma( ... ...

Abstract	The xi0 muon semileptonic decay has been observed for the first time with nine identified events using the KTeV beam line and detector at Fermilab. The decay is normalized to the xi0 beta decay mode and yields a value for the ratio of decay rates gamma(xi0 --> sigma+ mu- nu(mu))/gamma(xi0 --> sigma+ e- nu(e)) of [1.8(-0.5)(+0.7)(stat) +/- 0.2(syst)] x 10(-2). This is in agreement with the SU(3) flavor symmetric quark model.
Language	English
Publishing date	2005-08-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.95.081801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Search for the rare decay K(L)-->pi(0)e(+)e(-).

Alavi-Harati, A / Alexopoulos, T / Arenton, M / Barbosa, R F / Barker, A R / Barrio, M / Bellantoni, L / Bellavance, A / Blucher, E / Bock, G J / Bown, C / Bright, S / Cheu, E / Coleman, R / Corcoran, M D / Cox, B / Erwin, A R / Escobar, C O / Ford, R /

Glazov, A / Golossanov, A / Gomes, R A / Gouffon, P / Graham, J / Hamm, J / Hanagaki, K / Hsiung, Y B / Huang, H / Jejer, V / Jensen, D A / Kessler, R / Kobrak, H G E / Kotera, K / LaDue, J / Lai, N / Ledovskoy, A / McBride, P L / Monnier, E / Nelson, K S / Nguyen, H / Ping, H / Prasad, V / Qi, X R / Quinn, B / Ramberg, E J / Ray, R E / Ronquest, M / Santos, E / Senyo, K / Shanahan, P / Shields, J / Slater, W / Smith, D E / Solomey, N / Swallow, E C / Taegar, S A / Tesarek, R J / Toale, P A / Tschirhart, R / Velissaris, C / Wah, Y W / Wang, J / White, H B / Whitmore, J / Wilking, M / Winstein, B / Winston, R / Worcester, E T / Yamanaka, T / Zukanovich, R F

Physical review letters

2004 Volume 93, Issue 2, Page(s) 21805

Abstract: The KTeV/E799 experiment at Fermilab has searched for the rare kaon decay K(L)-->pi(0)e(+)e(-). This mode is expected to have a significant CP violating component. The measurement of its branching ratio could support the standard model or could indicate ... ...

Abstract	The KTeV/E799 experiment at Fermilab has searched for the rare kaon decay K(L)-->pi(0)e(+)e(-). This mode is expected to have a significant CP violating component. The measurement of its branching ratio could support the standard model or could indicate the existence of new physics. This Letter reports new results from the 1999-2000 data set. One event is observed with an expected background at 0.99+/-0.35 events. We set a limit on the branching ratio of 3.5x10(-10) at the 90% confidence level. Combining with the previous result based on the data set taken in 1997 yields the final KTeV result: BR(K(L)-->pi(0)e(+)e(-))<2.8x10(-10) at 90% C.L.
Language	English
Publishing date	2004-07-09
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.93.021805
Database	MEDical Literature Analysis and Retrieval System OnLINE

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