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Start Over Author "Badhrees, I." Publisher escholarship, university of california
15 results on '"Badhrees, I."'

1. Search for Majoron-emitting modes of Xe136 double beta decay with the complete EXO-200 dataset

Author

Al Kharusi, S, Anton, G, Badhrees, I, Barbeau, PS, Beck, D, Belov, V, Bhatta, T, Breidenbach, M, Brunner, T, Cao, GF, Cen, WR, Chambers, C, Cleveland, B, Coon, M, Craycraft, A, Daniels, T, Darroch, L, Daugherty, SJ, Davis, J, Delaquis, S, Der Mesrobian-Kabakian, A, DeVoe, R, Dilling, J, Dolgolenko, A, Dolinski, MJ, Echevers, J, Fairbank, W, Fairbank, D, Farine, J, Feyzbakhsh, S, Fierlinger, P, Fudenberg, D, Gautam, P, Gornea, R, Gratta, G, Hall, C, Hansen, EV, Hoessl, J, Hufschmidt, P, Hughes, M, Iverson, A, Jamil, A, Jessiman, C, Jewell, MJ, Johnson, A, Karelin, A, Kaufman, LJ, Koffas, T, Krücken, R, Kuchenkov, A, Kumar, KS, Lan, Y, Larson, A, Lenardo, BG, Leonard, DS, Li, GS, Li, S, Li, Z, Licciardi, C, Lin, YH, MacLellan, R, McElroy, T, Michel, T, Mong, B, Moore, DC, Murray, K, Njoya, O, Nusair, O, Odian, A, Ostrovskiy, I, Perna, A, Piepke, A, Pocar, A, Retière, F, Robinson, AL, Rowson, PC, Ruddell, D, Runge, J, Schmidt, S, Sinclair, D, Skarpaas, K, Soma, AK, Stekhanov, V, Tarka, M, Thibado, S, Todd, J, Tolba, T, Totev, TI, Tsang, R, Veenstra, B, Veeraraghavan, V, Vogel, P, Vuilleumier, J-L, Wagenpfeil, M, Watkins, J, Weber, M, Wen, LJ, Wichoski, U, Wrede, G, and Wu, SX

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences
Abstract

A search for Majoron-emitting modes of the neutrinoless double beta decay of Xe136 is performed with the full EXO-200 dataset. This dataset consists of a total Xe136 exposure of 234.1 kg·yr, and includes data with detector upgrades that have improved the energy threshold relative to previous searches. A lower limit of T1/2Xe136>4.3×1024 yr at 90% C.L. on the half-life of the spectral index n=1 Majoron decay was obtained, a factor of 3.6 more stringent than the previous limit from EXO-200 and a factor of 1.6 more stringent than the previous best limit from KamLAND-Zen. This limit corresponds to a constraint on the Majoron-neutrino coupling constant of |geeM|

Published
2021

2. Imaging individual barium atoms in solid xenon for barium tagging in nEXO

Author

Chambers, C, Walton, T, Fairbank, D, Craycraft, A, Yahne, DR, Todd, J, Iverson, A, Fairbank, W, Alamare, A, Albert, JB, Anton, G, Arnquist, IJ, Badhrees, I, Barbeau, PS, Beck, D, Belov, V, Bhatta, T, Bourque, F, Brodsky, JP, Brown, E, Brunner, T, Burenkov, A, Cao, GF, Cao, L, Cen, WR, Charlebois, SA, Chiu, M, Cleveland, B, Coon, M, Cree, W, Côté, M, Dalmasson, J, Daniels, T, Darroch, L, Daugherty, SJ, Daughhetee, J, Delaquis, S, Mesrobian-Kabakian, A Der, DeVoe, R, Dilling, J, Ding, YY, Dolinski, MJ, Dragone, A, Echevers, J, Fabris, L, Farine, J, Feyzbakhsh, S, Fontaine, R, Fudenberg, D, Giacomini, G, Gornea, R, Gratta, G, Hansen, EV, Heffner, M, Hoppe, EW, Hößl, J, House, A, Hufschmidt, P, Hughes, M, Ito, Y, Jamil, A, Jessiman, C, Jewell, MJ, Jiang, XS, Karelin, A, Kaufman, LJ, Kodroff, D, Koffas, T, Kravitz, S, Krücken, R, Kuchenkov, A, Kumar, KS, Lan, Y, Larson, A, Leonard, DS, Li, G, Li, S, Li, Z, Licciardi, C, Lin, YH, Lv, P, MacLellan, R, Michel, T, Mong, B, Moore, DC, Murray, K, Newby, RJ, Ning, Z, Njoya, O, Nolet, F, Nusair, O, Odgers, K, Odian, A, Oriunno, M, Orrell, JL, Ortega, GS, Ostrovskiy, I, Overman, CT, Parent, S, and Piepke, A

Subjects
physics.ins-det, nucl-ex, Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, nEXO Collaboration, General Science & Technology
Abstract

The search for neutrinoless double beta decay probes the fundamentalproperties of neutrinos, including whether or not the neutrino and antineutrinoare distinct. Double beta detectors are large and expensive, so backgroundreduction is essential for extracting the highest sensitivity. Theidentification, or 'tagging', of the $^{136}$Ba daughter atom from double betadecay of $^{136}$Xe provides a technique for eliminating backgrounds in thenEXO neutrinoless double beta decay experiment. The tagging scheme studied inthis work utilizes a cryogenic probe to trap the barium atom in solid xenon,where the barium atom is tagged via fluorescence imaging in the solid xenonmatrix. Here we demonstrate imaging and counting of individual atoms of bariumin solid xenon by scanning a focused laser across a solid xenon matrixdeposited on a sapphire window. When the laser sits on an individual atom, thefluorescence persists for $\sim$30~s before dropping abruptly to the backgroundlevel, a clear confirmation of one-atom imaging. No barium fluorescencepersists following evaporation of a barium deposit to a limit of $\leq$0.16\%.This is the first time that single atoms have been imaged in solid nobleelement. It establishes the basic principle of a barium tagging technique fornEXO.

Published
2019

3. First Evidence for cos2β>0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

Author

Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, and Epifanov, D

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, BABAR Collaboration, Belle Collaboration, hep-ex, Mathematical Sciences, Engineering, General Physics, Mathematical sciences, Physical sciences
Abstract

We present first evidence that the cosine of the CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B^{0}→D^{(*)}h^{0} with D→K_{S}^{0}π^{+}π^{-} decays, where h^{0}∈{π^{0},η,ω} denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BABAR and Belle experiments collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6}BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6}BB[over ¯] pairs recorded by the Belle detector. The results of the measurement are sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle β of the CKM Unitarity Triangle is β=[22.5±4.4(stat)±1.2(syst)±0.6(model)]°. The measurement assumes no direct CP violation in B^{0}→D^{(*)}h^{0} decays. The quoted model uncertainties are due to the composition of the D^{0}→K_{S}^{0}π^{+}π^{-} decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics e^{+}e^{-}→cc[over ¯] data sample. CP violation is observed in B^{0}→D^{(*)}h^{0} decays at the level of 5.1 standard deviations. The significance for cos2β>0 is 3.7 standard deviations. The trigonometric multifold solution π/2-β=(68.1±0.7)° is excluded at the level of 7.3 standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle.

Published
2018

4. Measurement of cos2β in B0→D(*)h0 with D→KS0π+π- decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author

Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, and Ernst, JA

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, hep-ex
Abstract

We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB pairs collected at the (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(∗)h0 decays. The measurement assumes no direct CP violation in B0→D(∗)h0 decays.

Published
2018

5. Measurement of the branching fraction and time-dependent CP asymmetry for B0→J/ψπ0 decays

Author

Pal, B, Schwartz, AJ, Aihara, H, Said, S Al, Asner, DM, Atmacan, H, Aulchenko, V, Aushev, T, Ayad, R, Badhrees, I, Bahinipati, S, Bansal, V, Behera, P, Beleño, C, Bhuyan, B, Bilka, T, Biswal, J, Bozek, A, Bračko, M, Cao, L, Červenkov, D, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Dash, N, Di Carlo, S, Doležal, Z, Eidelman, S, Epifanov, D, Fast, JE, Fulsom, BG, Garg, R, Gaur, V, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Golob, B, Guan, Y, Hara, T, Hayasaka, K, Hayashii, H, Higuchi, T, Hou, W-S, Hsu, C-L, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jia, S, Joffe, D, Julius, T, Karyan, G, Kim, DY, Kim, KT, Kim, SH, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Križan, P, Kroeger, R, Krokovny, P, Kulasiri, R, Kumar, R, Kuzmin, A, Kwon, Y-J, Lalwani, K, Lee, SC, Li, LK, Li, YB, Gioi, L Li, Libby, J, Lu, P-C, Masuda, M, Matsuda, T, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, GB, Mori, T, Nakano, E, Nakao, M, Nath, KJ, Natkaniec, Z, Nayak, M, Nishida, S, Ogawa, S, Ono, H, and Pakhlova, G

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Mathematical Physics, Mathematical Sciences, Physical Sciences, Brain Disorders, hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics, Mathematical physics, Astronomical sciences, Particle and high energy physics
Abstract

We present measurements of the branching fraction and time-dependent CP asymmetries in B0→J/ψπ0 decays based on (231.8±2.6) ×106Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We obtain a branching fraction B(B0→J/ψπ0)=(1.94±0.22(stat)±0.17(syst))×10-5. We also measure the CP asymmetry parameters C=-0.21±0.26(stat)±0. 06(syst) and S=-0.68±0.30(stat)±0.04(syst). © 2006 The American Physical Society.

Published
2018

6. Measurement of cos2β in B0 →d (∗)h0 with D → KS0 π+π- decays by a combined time-dependent Dalitz plot analysis of B a B ar and Belle data

Author

Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, S, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, De Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, DoleŽal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, and Ernst, JA

Subjects
hep-ex
Abstract

We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB pairs collected at the (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(∗)h0 decays. The measurement assumes no direct CP violation in B0→D(∗)h0 decays.

Published
2018

7. Measurement of time-dependent CP asymmetries in B0→KS0ηγ decays

Author

Nakano, H, Ishikawa, A, Sumisawa, K, Yamamoto, H, Adachi, I, Aihara, H, Said, S Al, Asner, DM, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bansal, V, Behera, P, Beleño, C, Bhuyan, B, Bilka, T, Biswal, J, Bozek, A, Bračko, M, Červenkov, D, Chekelian, V, Cheon, BG, Chilikin, K, Cho, K, Choi, S-K, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Dash, N, Di Carlo, S, Doležal, Z, Eidelman, S, Fast, JE, Ferber, T, Fulsom, BG, Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Guan, Y, Guido, E, Haba, J, Hara, T, Hayasaka, K, Hayashii, H, Hedges, MT, Hirose, S, Hou, W-S, Iijima, T, Inami, K, Inguglia, G, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jaegle, I, Jeon, HB, Jia, S, Jin, Y, Julius, T, Kaliyar, AB, Karyan, G, Kawasaki, T, Kiesling, C, Kim, DY, Kim, HJ, Kim, JB, Kim, KT, Kim, SH, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Križan, P, Kroeger, R, Krokovny, P, Kuhr, T, Kulasiri, R, Kumita, T, Kwon, Y-J, Lange, JS, Lee, IS, Lee, SC, Li, LK, Li, Y, Li, YB, Gioi, L Li, Libby, J, Liventsev, D, Lubej, M, Luo, T, MacNaughton, J, Masuda, M, and Matsuda, T

Subjects
hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract

We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay B0-->phiK0. We use a sample of approximately 114 x 10(6) B-meson pairs taken at the Upsilon(4S) resonance with the BABAR detector at the PEP-II B-meson factory at SLAC. We reconstruct the CP eigenstates phiK0S and phiK0L, where phi-->K+K-, K0S-->pi+pi-, and K0L is observed via its hadronic interactions. The other B meson in the event is tagged as either a B0 or Bbar0 from its decay products. The values of the CP-violation parameters are SphiK=0.47+/-0.34(stat)+0.08-0.06(syst) and CphiK=0.01+/-0.33(stat)+/-0.10(syst).

Published
2018

8. Search for nucleon decays with EXO-200

Author

Albert, JB, Anton, G, Badhrees, I, Barbeau, PS, Bayerlein, R, Beck, D, Belov, V, Breidenbach, M, Brunner, T, Cao, GF, Cen, WR, Chambers, C, Cleveland, B, Coon, M, Craycraft, A, Cree, W, Daniels, T, Danilov, M, Daugherty, SJ, Daughhetee, J, Davis, J, Delaquis, S, Der Mesrobian-Kabakian, A, DeVoe, R, Didberidze, T, Dilling, J, Dolgolenko, A, Dolinski, MJ, Fairbank, W, Farine, J, Feyzbakhsh, S, Fierlinger, P, Fudenberg, D, Gornea, R, Graham, K, Gratta, G, Hall, C, Hansen, EV, Hoessl, J, Homiller, S, Hufschmidt, P, Hughes, M, Jamil, A, Jewell, MJ, Johnson, A, Johnston, S, Karelin, A, Kaufman, LJ, Koffas, T, Kravitz, S, Krücken, R, Kuchenkov, A, Kumar, KS, Lan, Y, Leonard, DS, Li, GS, Li, S, Licciardi, C, Lin, YH, MacLellan, R, Michel, T, Mong, B, Moore, D, Murray, K, Nelson, R, Njoya, O, Odian, A, Ostrovskiy, I, Piepke, A, Pocar, A, Retière, F, Robinson, AL, Rowson, PC, Schmidt, S, Schubert, A, Sinclair, D, Soma, AK, Stekhanov, V, Tarka, M, Tolba, T, Tsang, R, Vogel, P, Vuilleumier, J-L, Wagenpfeil, M, Waite, A, Walton, T, Weber, M, Wen, LJ, Wichoski, U, Wrede, G, Yang, L, Yen, Y-R, Zeldovich, OY, Zettlemoyer, J, and Ziegler, T

Published
2018

9. First Observation of CP Violation in B¯0→DCP(*)h0 Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data

Author

Abdesselam, A, Adachi, I, Adametz, A, Adye, T, Ahmed, H, Aihara, H, Akar, S, Alam, MS, Albert, J, Al Said, S, Andreassen, R, Angelini, C, Anulli, F, Arinstein, K, Arnaud, N, Asner, DM, Aston, D, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, AM, Band, HR, Banerjee, Sw, Barberio, E, Bard, DJ, Barlow, RJ, Batignani, G, Beaulieu, A, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bloom, PC, Bobrov, A, Bomben, M, Bondar, A, Bonneaud, GR, Bonvicini, G, Bozek, A, Bozzi, C, Bračko, M, Briand, H, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Červenkov, D, Chang, P, Chao, DS, Chauveau, J, Cheaib, R, Chekelian, V, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Chistov, R, Cho, K, Chobanova, V, Choi, HHF, Choi, S-K, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Contri, R, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Dalseno, J, Dasu, S, Davier, M, Davis, CL, De Mori, F, De Nardo, G, and Denig, AG

Subjects
BaBar Collaboration, Belle Collaboration, hep-ex, Mathematical Sciences, Physical Sciences, Engineering, General Physics
Abstract

We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{f}S=+0.66±0.10(stat)±0.06(syst) and C=-0.02±0.07(stat)±0.03(syst). These results correspond to the first observation of CP violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

Published
2015

10. First Observation of CP Violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data.

Author

Abdesselam, A, Adachi, I, Adametz, A, Adye, T, Ahmed, H, Aihara, H, Akar, S, Alam, MS, Albert, J, Al Said, S, Andreassen, R, Angelini, C, Anulli, F, Arinstein, K, Arnaud, N, Asner, DM, Aston, D, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, AM, Band, HR, Banerjee, Sw, Barberio, E, Bard, DJ, Barlow, RJ, Batignani, G, Beaulieu, A, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bloom, PC, Bobrov, A, Bomben, M, Bondar, A, Bonneaud, GR, Bonvicini, G, Bozek, A, Bozzi, C, Bračko, M, Briand, H, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Červenkov, D, Chang, P, Chao, DS, Chauveau, J, Cheaib, R, Chekelian, V, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Chistov, R, Cho, K, Chobanova, V, Choi, HHF, Choi, S-K, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Contri, R, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Dalseno, J, Dasu, S, Davier, M, Davis, CL, De Mori, F, De Nardo, G, and Denig, AG

Subjects
BaBar Collaboration, Belle Collaboration, hep-ex, General Physics, Physical Sciences, Mathematical Sciences, Engineering
Abstract

We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{f}S=+0.66±0.10(stat)±0.06(syst) and C=-0.02±0.07(stat)±0.03(syst). These results correspond to the first observation of CP violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

Published
2015

11. Search for Majoron-emitting modes of Xe 136 double beta decay with the complete EXO-200 dataset

Author

Al Kharusi, S, Al Kharusi, S, Anton, G, Badhrees, I, Barbeau, PS, Beck, D, Belov, V, Bhatta, T, Breidenbach, M, Brunner, T, Cao, GF, Cen, WR, Chambers, C, Cleveland, B, Coon, M, Craycraft, A, Daniels, T, Darroch, L, Daugherty, SJ, Davis, J, Delaquis, S, Der Mesrobian-Kabakian, A, Devoe, R, Dilling, J, Dolgolenko, A, Dolinski, MJ, Echevers, J, Fairbank, J, Fairbank, D, Farine, J, Feyzbakhsh, S, Fierlinger, P, Fudenberg, D, Gautam, P, Gornea, R, Gratta, G, Hall, C, Hansen, EV, Hoessl, J, Hufschmidt, P, Hughes, M, Iverson, A, Jamil, A, Jessiman, C, Jewell, MJ, Johnson, A, Karelin, A, Kaufman, LJ, Koffas, T, Krücken, R, Kuchenkov, A, Kumar, KS, Lan, Y, Larson, A, Lenardo, BG, Leonard, DS, Li, GS, Li, S, Li, Z, Licciardi, C, Lin, YH, MacLellan, R, McElroy, T, Michel, T, Mong, B, Moore, DC, Murray, K, Njoya, O, Nusair, O, Odian, A, Ostrovskiy, I, Perna, A, Piepke, A, Pocar, A, Retière, F, Robinson, AL, Rowson, PC, Ruddell, D, Runge, J, Schmidt, S, Sinclair, D, Skarpaas, K, Soma, AK, Stekhanov, V, Tarka, M, Thibado, S, Todd, J, Tolba, T, Totev, TI, Tsang, R, Veenstra, B, Veeraraghavan, V, Vogel, P, Vuilleumier, JL, Wagenpfeil, M, Watkins, J, Weber, M, Wen, LJ, Wichoski, U, Wrede, G, Wu, SX, Al Kharusi, S, Al Kharusi, S, Anton, G, Badhrees, I, Barbeau, PS, Beck, D, Belov, V, Bhatta, T, Breidenbach, M, Brunner, T, Cao, GF, Cen, WR, Chambers, C, Cleveland, B, Coon, M, Craycraft, A, Daniels, T, Darroch, L, Daugherty, SJ, Davis, J, Delaquis, S, Der Mesrobian-Kabakian, A, Devoe, R, Dilling, J, Dolgolenko, A, Dolinski, MJ, Echevers, J, Fairbank, J, Fairbank, D, Farine, J, Feyzbakhsh, S, Fierlinger, P, Fudenberg, D, Gautam, P, Gornea, R, Gratta, G, Hall, C, Hansen, EV, Hoessl, J, Hufschmidt, P, Hughes, M, Iverson, A, Jamil, A, Jessiman, C, Jewell, MJ, Johnson, A, Karelin, A, Kaufman, LJ, Koffas, T, Krücken, R, Kuchenkov, A, Kumar, KS, Lan, Y, Larson, A, Lenardo, BG, Leonard, DS, Li, GS, Li, S, Li, Z, Licciardi, C, Lin, YH, MacLellan, R, McElroy, T, Michel, T, Mong, B, Moore, DC, Murray, K, Njoya, O, Nusair, O, Odian, A, Ostrovskiy, I, Perna, A, Piepke, A, Pocar, A, Retière, F, Robinson, AL, Rowson, PC, Ruddell, D, Runge, J, Schmidt, S, Sinclair, D, Skarpaas, K, Soma, AK, Stekhanov, V, Tarka, M, Thibado, S, Todd, J, Tolba, T, Totev, TI, Tsang, R, Veenstra, B, Veeraraghavan, V, Vogel, P, Vuilleumier, JL, Wagenpfeil, M, Watkins, J, Weber, M, Wen, LJ, Wichoski, U, Wrede, G, and Wu, SX

Abstract

A search for Majoron-emitting modes of the neutrinoless double beta decay of Xe136 is performed with the full EXO-200 dataset. This dataset consists of a total Xe136 exposure of 234.1 kg·yr, and includes data with detector upgrades that have improved the energy threshold relative to previous searches. A lower limit of T1/2Xe136>4.3×1024 yr at 90% C.L. on the half-life of the spectral index n=1 Majoron decay was obtained, a factor of 3.6 more stringent than the previous limit from EXO-200 and a factor of 1.6 more stringent than the previous best limit from KamLAND-Zen. This limit corresponds to a constraint on the Majoron-neutrino coupling constant of |geeM|<(0.4-0.9)×10-5. The lower threshold and the additional data taken resulted in a factor 8.4 improvement for the n=7 mode compared to the previous EXO-200 search. This search provides the most stringent limits to date on the Majoron-emitting decays of Xe136 with spectral indices n=1, 2, 3, and 7.

Published
2021

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Author

Pal, B, Pal, B, Schwartz, AJ, Aihara, H, Said, S Al, Asner, DM, Atmacan, H, Aulchenko, V, Aushev, T, Ayad, R, Badhrees, I, Bahinipati, S, Bansal, V, Behera, P, Beleño, C, Bhuyan, B, Bilka, T, Biswal, J, Bozek, A, Bračko, M, Cao, L, Červenkov, D, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Dash, N, Di Carlo, S, Doležal, Z, Eidelman, S, Epifanov, D, Fast, JE, Fulsom, BG, Garg, R, Gaur, V, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Golob, B, Guan, Y, Hara, T, Hayasaka, K, Hayashii, H, Higuchi, T, Hou, W-S, Hsu, C-L, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jia, S, Joffe, D, Julius, T, Karyan, G, Kim, DY, Kim, KT, Kim, SH, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Križan, P, Kroeger, R, Krokovny, P, Kulasiri, R, Kumar, R, Kuzmin, A, Kwon, Y-J, Lalwani, K, Lee, SC, Li, LK, Li, YB, Gioi, L Li, Libby, J, Lu, P-C, Masuda, M, Matsuda, T, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, GB, Mori, T, Nakano, E, Nakao, M, Nath, KJ, Natkaniec, Z, Nayak, M, Nishida, S, Ogawa, S, Ono, H, Pakhlova, G, Pal, B, Pal, B, Schwartz, AJ, Aihara, H, Said, S Al, Asner, DM, Atmacan, H, Aulchenko, V, Aushev, T, Ayad, R, Badhrees, I, Bahinipati, S, Bansal, V, Behera, P, Beleño, C, Bhuyan, B, Bilka, T, Biswal, J, Bozek, A, Bračko, M, Cao, L, Červenkov, D, Chekelian, V, Chen, A, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Dash, N, Di Carlo, S, Doležal, Z, Eidelman, S, Epifanov, D, Fast, JE, Fulsom, BG, Garg, R, Gaur, V, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Golob, B, Guan, Y, Hara, T, Hayasaka, K, Hayashii, H, Higuchi, T, Hou, W-S, Hsu, C-L, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jia, S, Joffe, D, Julius, T, Karyan, G, Kim, DY, Kim, KT, Kim, SH, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Križan, P, Kroeger, R, Krokovny, P, Kulasiri, R, Kumar, R, Kuzmin, A, Kwon, Y-J, Lalwani, K, Lee, SC, Li, LK, Li, YB, Gioi, L Li, Libby, J, Lu, P-C, Masuda, M, Matsuda, T, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, GB, Mori, T, Nakano, E, Nakao, M, Nath, KJ, Natkaniec, Z, Nayak, M, Nishida, S, Ogawa, S, Ono, H, and Pakhlova, G

Published
2018

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Author

Adachi, I, Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, Adachi, I, Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, and Epifanov, D

Published
2018

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Author

Adachi, I, Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, Ernst, JA, Adachi, I, Adachi, I, Adye, T, Ahmed, H, Ahn, JK, Aihara, H, Akar, S, Alam, MS, Albert, J, Anulli, F, Arnaud, N, Asner, DM, Aston, D, Atmacan, H, Aushev, T, Ayad, R, Badhrees, I, Bakich, AM, Banerjee, Sw, Bansal, V, Barlow, RJ, Batignani, G, Beaulieu, A, Behera, P, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bomben, M, Bondar, A, Bonneaud, GR, Bozek, A, Bozzi, C, Bračko, M, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Di Carlo, S, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Chao, DS, Chauveau, J, Cheaib, R, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Cho, K, Choi, Y, Choudhury, S, Chrzaszcz, M, Cibinetto, G, Cinabro, D, Cochran, J, Coleman, JP, Convery, MR, Cowan, G, Cowan, R, Cremaldi, L, Cunliffe, S, Dash, N, Davier, M, Davis, CL, De Mori, F, De Nardo, G, Denig, AG, de Sangro, R, Dey, B, Di Lodovico, F, Dittrich, S, Doležal, Z, Dorfan, J, Drásal, Z, Druzhinin, VP, Dunwoodie, W, Ebert, M, Echenard, B, Eidelman, S, Eigen, G, Eisner, AM, Emery, S, Epifanov, D, and Ernst, JA

Published
2018

15. First Observation of CP Violation in B ¯ 0 → DCP (∗) h0 Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data

Author

Abdesselam, A, Adachi, I, Adametz, A, Adye, T, Ahmed, H, Aihara, H, Akar, S, Alam, MS, Albert, J, Al Said, S, Andreassen, R, Angelini, C, Anulli, F, Arinstein, K, Arnaud, N, Asner, DM, Aston, D, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, AM, Band, HR, Banerjee, S, Barberio, E, Bard, DJ, Barlow, RJ, Batignani, G, Beaulieu, A, Bellis, M, Ben-Haim, E, Bernard, D, Bernlochner, FU, Bettarini, S, Bettoni, D, Bevan, AJ, Bhardwaj, V, Bhuyan, B, Bianchi, F, Biasini, M, Biswal, J, Blinov, VE, Bloom, PC, Bobrov, A, Bomben, M, Bondar, A, Bonneaud, GR, Bonvicini, G, Bozek, A, Bozzi, C, Bračko, M, Briand, H, Browder, TE, Brown, DN, Bünger, C, Burchat, PR, Buzykaev, AR, Calabrese, R, Calcaterra, A, Calderini, G, Carpinelli, M, Cartaro, C, Casarosa, G, Cenci, R, Červenkov, D, Chang, P, Chao, DS, Chauveau, J, Cheaib, R, Chekelian, V, Chen, A, Chen, C, Cheng, CH, Cheon, BG, Chilikin, K, Chistov, R, and Cho, K

Abstract

© 2015 American Physical Society. © 2015 American Physical Society. We report a measurement of the time-dependent CP asymmetry of B¯0→DCP(∗)h0 decays, where the light neutral hadron h0 is a π0, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K+K-, KS0π0, or KS0ω. The measurement is performed combining the final data samples collected at the (4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×106BB¯ pairs recorded by the BABAR detector and (772±11)×106BB¯ pairs recorded by the Belle detector. We measure the CP asymmetry parameters -ηfS=+0.66±0.10(stat)±0.06(syst) and C=-0.02±0.07(stat)±0.03(syst). These results correspond to the first observation of CP violation in B¯0→DCP(∗)h0 decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

Published
2015
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