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Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}τ^+ν_τ$

Publication ,  Journal Article
Collaboration, B; Abdesselam, A; Adachi, I; Adamczyk, K; Ahn, JK; Aihara, H; Said, SA; Arinstein, K; Arita, Y; Asner, DM; Atmacan, H; Ayad, R ...
March 7, 2019

We report the first measurement of the $D^{\ast -}$ meson polarization in the decay $B^0 \to D^{*-} \tau^+\nu_{\tau}$ using the full data sample of 772$\times 10^6$ $B\bar{B}$ pairs recorded with the Belle detector at the KEKB electron-positron collider. Our result, $F_L^{D^\ast} = 0.60 \pm 0.08 ({\rm stat}) \pm 0.04 ({\rm sys})$, where $F_L^{D^\ast}$ denotes the $D^{\ast-}$ meson longitudinal polarization fraction, agrees within about $1.7$ standard deviations of the standard model prediction.

Duke Scholars

Publication Date

March 7, 2019
 

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Collaboration, B., Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., … Zwahlen, N. (2019). Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}τ^+ν_τ$.
Collaboration, Belle, A. Abdesselam, I. Adachi, K. Adamczyk, J. K. Ahn, H. Aihara, S Al Said, et al. “Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}τ^+ν_τ$,” March 7, 2019.
Collaboration B, Abdesselam A, Adachi I, Adamczyk K, Ahn JK, Aihara H, et al. Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}τ^+ν_τ$. 2019 Mar 7;
Collaboration B, Abdesselam A, Adachi I, Adamczyk K, Ahn JK, Aihara H, Said SA, Arinstein K, Arita Y, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bahinipati S, Bakich AM, Ban Y, Bansal V, Barberio E, Barrett M, Bartel W, Behera P, Beleño C, Belous K, Berger M, Bernlochner F, Besson D, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bloomfield T, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Braun N, Breibeck F, Browder TE, Campajola M, Cao L, Caria G, Červenkov D, Chang M-C, Chang P, Chao Y, Cheaib R, Chekelian V, Chen A, Chen K-F, Cheon BG, Chilikin K, Chistov R, Cho HE, Cho K, Chobanova V, Choi S-K, Choi Y, Choudhury S, Cinabro D, Crnkovic J, Cunliffe S, Czank T, Danilov M, Dash N, Carlo SD, Dingfelder J, Doležal Z, Dong TV, Dossett D, Drásal Z, Drutskoy A, Dubey S, Dutta D, Eidelman S, Epifanov D, Fast JE, Feindt M, Ferber T, Frey A, Frost O, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Gemmler J, Getzkow D, Giordano F, Giri A, Goldenzweig P, Golob B, Greenwald D, Perdekamp MG, Grygier J, Grzymkowska O, Guan Y, Guido E, Guo H, Haba J, Hamer P, Hara K, Hara T, Hasegawa Y, Hasenbusch J, Hayasaka K, Hayashii H, He XH, Heck M, Hedges MT, Heffernan D, Heider M, Heller A, Higuchi T, Hirose S, Horiguchi T, Hoshi Y, Hoshina K, Hou W-S, Hsiung YB, Hsu C-L, Huang K, Huschle M, Igarashi Y, Iijima T, Imamura M, Inami K, Inguglia G, Ishikawa A, Itagaki K, Itoh R, Iwasaki M, Iwasaki Y, Iwata S, Jacobs WW, Jaegle I, Jeon HB, Jia S, Jin Y, Joffe D, Jones M, Joo CW, Joo KK, Julius T, Kahn J, Kakuno H, Kaliyar AB, Kang JH, Kang KH, Kapusta P, Karyan G, Kataoka SU, Kato E, Kato Y, Katrenko P, Kawai H, Kawasaki T, Keck T, Kichimi H, Kiesling C, Kim BH, Kim CH, Kim DY, Kim HJ, Kim H-J, Kim JB, Kim KT, Kim SH, Kim SK, Kim YJ, Kimmel T, Kindo H, Kinoshita K, Kleinwort C, Klucar J, Kobayashi N, Kodyš P, Koga Y, Konno T, Korpar S, Kotchetkov D, Kouzes RT, Križan P, Kroeger R, Krohn J-F, Krokovny P, Kronenbitter B, Kuhr T, Kulasiri R, Kumar R, Kumita T, Kurihara E, Kuroki Y, Kuzmin A, Kvasnička P, Kwon Y-J, Lai Y-T, Lalwani K, Lange JS, Lee IS, Lee JK, Lee JY, Lee SC, Leitgab M, Leitner R, Levit D, Lewis P, Li CH, Li H, Li LK, Li Y, Li YB, Gioi LL, Libby J, Lieret K, Limosani A, Liptak Z, Liu C, Liu Y, Liventsev D, Loos A, Louvot R, Lu P-C, Lubej M, Luo T, MacNaughton J, Masuda M, Matsuda T, Matvienko D, McNeil JT, Merola M, Metzner F, Mikami Y, Miyabayashi K, Miyachi Y, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mohanty S, Moon HK, Moon TJ, Mori T, Morii T, Moser H-G, Mrvar M, Müller T, Muramatsu N, Mussa R, Nagasaka Y, Nakahama Y, Nakamura I, Nakamura KR, Nakano E, Nakano H, Nakano T, Nakao M, Nakayama H, Nakazawa H, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Neichi K, Ng C, Niebuhr C, Niiyama M, Nisar NK, Nishida S, Nishimura K, Nitoh O, Ogawa A, Ogawa K, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ono H, Ono Y, Onuki Y, Ostrowicz W, Oswald C, Ozaki H, Pakhlov P, Pakhlova G, Pal B, Panzenböck E, Pardi S, Park C-S, Park CW, Park H, Park KS, Park S-H, Patra S, Paul S, Pavelkin I, Pedlar TK, Peng T, Pesántez L, Pestotnik R, Peters M, Piilonen LE, Popov V, Prasanth K, Prencipe E, Prim M, Prothmann K, Purohit MV, Rabusov A, Rauch J, Reisert B, Resmi PK, Ribežl E, Ritter M, Rorie J, Rostomyan A, Rozanska M, Rummel S, Russo G, Sahoo D, Sahoo H, Saito T, Sakai Y, Salehi M, Sandilya S, Santel D, Santelj L, Sanuki T, Sasaki J, Sasao N, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schönmeier P, Schram M, Schueler J, Schwanda C, Schwartz AJ, Schwenker B, Seidl R, Seino Y, Semmler D, Senyo K, Seon O, Seong IS, Sevior ME, Shang L, Shapkin M, Shebalin V, Shen CP, Shibata T-A, Shibuya H, Shinomiya S, Shiu J-G, Shwartz B, Sibidanov A, Simon F, Singh JB, Sinha R, Smith K, Sokolov A, Soloviev Y, Solovieva E, Stanič S, Starič M, Steder M, Stottler Z, Strube JF, Stypula J, Sugihara S, Sugiyama A, Sumihama M, Sumisawa K, Sumiyoshi T, Sutcliffe W, Suzuki K, Suzuki S, Suzuki SY, Suzuki Z, Takeichi H, Takizawa M, Tamponi U, Tanaka M, Tanaka S, Tanida K, Taniguchi N, Tao Y, Taylor GN, Tenchini F, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uchida T, Ueda I, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Vahsen SE, Hulse CV, Tonder RV, Vanhoefer P, Varner G, Varvell KE, Vervink K, Vinokurova A, Vorobyev V, Vossen A, Wagner MN, Waheed E, Wang B, Wang CH, Wang M-Z, Wang P, Wang XL, Watanabe M, Watanabe Y, Watanuki S, Wedd R, Wehle S, Widmann E, Wiechczynski J, Williams KM, Won E, Yabsley BD, Yamada S, Yamamoto H, Yamashita Y, Yang SB, Yashchenko S, Ye H, Yelton J, Yin JH, Yook Y, Yuan CZ, Yusa Y, Zakharov S, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhao L, Zhilich V, Zhukova V, Zhulanov V, Zivko T, Zupanc A, Zwahlen N. Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}τ^+ν_τ$. 2019 Mar 7;

Publication Date

March 7, 2019