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Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$

Publication ,  Journal Article
Abdesselam, A; Adachi, I; Adamczyk, K; Aihara, H; Said, SA; Arinstein, K; Arita, Y; Asner, DM; Aso, T; Atmacan, H; Aulchenko, V; Aushev, T ...
August 23, 2016

We report the first measurement of the $\tau$ lepton polarization in the decay ${\bar B} \rightarrow D^* \tau^- {\bar\nu_{\tau}}$ as well as a new measurement of the ratio of the branching fractions $R(D^{*}) = \mathcal{B}({\bar B} \rightarrow D^* \tau^- {\bar\nu_{\tau}}) / \mathcal{B}({\bar B} \rightarrow D^* \ell^- {\bar\nu_{\ell}})$, where $\ell^-$ denotes an electron or a muon, with the decays $\tau^- \rightarrow \pi^- \nu_{\tau}$ and $\tau^- \rightarrow \rho^- \nu_{\tau}$. We use the full data sample of $772 \times 10^6$ $B{\bar B}$ pairs accumulated with the Belle detector at the KEKB electron-positron collider. Our preliminary results, $R(D^*) = 0.276 \pm 0.034{\rm (stat.)} ^{+0.029} _{-0.026}{\rm (syst.)}$ and $P_{\tau} = -0.44 \pm 0.47 {\rm (stat.)} ^{+0.20} _{-0.17} {\rm (syst.)}$, are consistent with the theoretical predictions of the Standard Model within $0.6$ standard deviation.

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Publication Date

August 23, 2016
 

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Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. A., Arinstein, K., … Zyukova, O. (2016). Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$.
Abdesselam, A., I. Adachi, K. Adamczyk, H. Aihara, S Al Said, K. Arinstein, Y. Arita, et al. “Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$,” August 23, 2016.
Abdesselam A, Adachi I, Adamczyk K, Aihara H, Said SA, Arinstein K, et al. Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$. 2016 Aug 23;
Abdesselam A, Adachi I, Adamczyk K, Aihara H, Said SA, Arinstein K, Arita Y, Asner DM, Aso T, Atmacan H, Aulchenko V, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bahinipati S, Bakich AM, Bala A, Ban Y, Bansal V, Barberio E, Barrett M, Bartel W, Bay A, Bedny I, Behera P, Belhorn M, Belous K, Berger M, Besson D, Bhardwaj V, Bhuyan B, Biswal J, Bloomfield T, Blyth S, Bobrov A, Bondar A, Bonvicini G, Bookwalter C, Boulahouache C, Bozek A, Bračko M, Breibeck F, Brodzicka J, Browder TE, Waheed E, Červenkov D, Chang M-C, Chang P, Chao Y, Chekelian V, Chen A, Chen K-F, Chen P, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi S-K, Choi Y, Cinabro D, Crnkovic J, Dalseno J, Danilov M, Dash N, Carlo SD, Dingfelder J, Doležal Z, Dossett D, Drásal Z, Drutskoy A, Dubey S, Dutta D, Dutta K, Eidelman S, Epifanov D, Esen S, Farhat H, Fast JE, Feindt M, Ferber T, Frey A, Frost O, Fulsom BG, Gaur V, Gabyshev N, Ganguly S, Garmash A, Getzkow D, Gillard R, Giordano F, Glattauer R, Goh YM, Goldenzweig P, Golob B, Greenwald D, Perdekamp MG, Grygier J, Grzymkowska O, Guo H, Haba J, Hamer P, Han YL, 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, Himori S, Hirose S, Horiguchi T, Hoshi Y, Hoshina K, Hou W-S, Hsiung YB, Hsu C-L, Huschle M, Hyun HJ, Igarashi Y, Iijima T, Imamura M, Inami K, Inguglia G, Ishikawa A, Itagaki K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Iwata S, Jacobs WW, Jaegle I, Jeon HB, Jin Y, Joffe D, Jones M, Joo KK, Julius T, Kakuno H, Kaliyar AB, Kang JH, Kang KH, Kapusta P, Kataoka SU, Kato E, Kato Y, Katrenko P, Kawai H, Kawasaki T, Keck T, Kichimi H, Kiesling C, Kim BH, Kim DY, Kim HJ, Kim H-J, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SH, Kim SK, Kim YJ, Kinoshita K, Kleinwort C, Klucar J, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Koga Y, Korpar S, Kotchetkov D, Kouzes RT, Križan P, 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, Lange JS, Lee DH, Lee IS, Lee S-H, Leitgab M, Leitner R, Levit D, Lewis P, Li CH, Li H, Li J, Li L, Li X, Li Y, Gioi LL, Libby J, Limosani A, Liu C, Liu Y, Liu ZQ, Liventsev D, Loos A, Louvot R, Lubej M, Lukin P, Luo T, MacNaughton J, Masuda M, Matsuda T, Matvienko D, Matyja A, McOnie S, Mikami Y, Miyabayashi K, Miyachi Y, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mohanty S, Mohapatra D, Moll A, Moon HK, Mori T, Morii T, Moser H-G, Müller T, Muramatsu N, Mussa R, Nagamine T, 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, Nedelkovska E, Negishi K, Neichi K, Ng C, Niebuhr C, Niiyama M, Nisar NK, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa A, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ono Y, Onuki Y, Ostrowicz W, Oswald C, Ozaki H, Pakhlov P, Pakhlova G, Pal B, Palka H, Panzenböck E, Park C-S, Park CW, Park H, Park KS, Paul S, Peak LS, Pedlar TK, Peng T, Pesántez L, Pestotnik R, Peters M, Petrič M, Piilonen LE, Poluektov A, Prasanth K, Prim M, Prothmann K, Pulvermacher C, Purohit MV, Rauch J, Reisert B, Ribežl E, Ritter M, Rorie J, Rostomyan A, Rozanska M, Rummel S, Ryu S, Sahoo H, Saito T, Sakai K, Sakai Y, 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, 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, Shimizu N, Shinomiya S, Shiu J-G, Shwartz B, Sibidanov A, Simon F, Singh JB, Sinha R, Smerkol P, Sohn Y-S, Sokolov A, Soloviev Y, Solovieva E, Stanič S, Starič M, Steder M, Strube JF, Stypula J, Sugihara S, Sugiyama A, Sumihama M, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Suzuki SY, Suzuki Z, Takeichi H, Takizawa M, Tamponi U, Tanaka M, Tanaka S, Tanida K, Taniguchi N, Taylor GN, Tenchini F, Teramoto Y, Tikhomirov I, Trabelsi K, Trusov V, Tse YF, Tsuboyama T, Uchida M, Uchida T, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Uozumi S, Urquijo P, Ushiroda Y, Usov Y, Vahsen SE, Hulse CV, Vanhoefer P, Varner G, Varvell KE, Vervink K, Vinokurova A, Vorobyev V, Vossen A, Wagner MN, Wang CH, Wang J, Wang M-Z, Wang P, Wang XL, Watanabe M, Watanabe Y, Wedd R, Wehle S, White E, Widmann E, Wiechczynski J, Williams KM, Won E, Yabsley BD, Yamada S, Yamamoto H, Yamaoka J, Yamashita Y, Yamauchi M, Yashchenko S, Ye H, Yelton J, Yook Y, Yuan CZ, Yusa Y, Zhang CC, Zhang LM, Zhang ZP, Zhao L, Zhilich V, Zhukova V, Zhulanov V, Ziegler M, Zivko T, Zupanc A, Zwahlen N, Zyukova O. Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$. 2016 Aug 23;

Publication Date

August 23, 2016