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Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle.

Publication ,  Journal Article
Guan, Y; Vossen, A; Adachi, I; Adamczyk, K; Ahn, JK; Aihara, H; Al Said, S; Asner, DM; Atmacan, H; Aulchenko, V; Aushev, T; Ayad, R; Babu, V ...
Published in: Physical review letters
February 2019

We report the first observation of the spontaneous polarization of Λ and Λ[over ¯] hyperons transverse to the production plane in e^{+}e^{-} annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ[over ¯] production, we also report results with subtracted feed-down contributions from Σ^{0} and charm. This measurement uses a dataset of 800.4  fb^{-1} collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV. We observe a significant polarization that rises with the fractional energy carried by the Λ/Λ[over ¯] hyperon.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

February 2019

Volume

122

Issue

4

Start / End Page

042001

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Guan, Y., Vossen, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., … Belle Collaboration, . (2019). Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle. Physical Review Letters, 122(4), 042001. https://doi.org/10.1103/physrevlett.122.042001
Guan, Y., A. Vossen, I. Adachi, K. Adamczyk, J. K. Ahn, H. Aihara, S. Al Said, et al. “Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle.Physical Review Letters 122, no. 4 (February 2019): 042001. https://doi.org/10.1103/physrevlett.122.042001.
Guan Y, Vossen A, Adachi I, Adamczyk K, Ahn JK, Aihara H, et al. Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle. Physical review letters. 2019 Feb;122(4):042001.
Guan, Y., et al. “Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle.Physical Review Letters, vol. 122, no. 4, Feb. 2019, p. 042001. Epmc, doi:10.1103/physrevlett.122.042001.
Guan Y, Vossen A, Adachi I, Adamczyk K, Ahn JK, Aihara H, Al Said S, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Beleño C, Berger M, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bobrov A, Bonvicini G, Bozek A, Bračko M, Browder TE, Cao L, Červenkov D, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi S-K, Choi Y, Cinabro D, Cunliffe S, Dash N, Di Carlo S, Dingfelder J, Doležal Z, Dong TV, Drásal Z, Eidelman S, Epifanov D, Fast JE, Ferber T, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Giri A, Goldenzweig P, Golob B, Guido E, Haba J, Hayasaka K, Hayashii H, Hirose S, Hou W-S, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Jia S, Jin Y, Joffe D, Joo KK, Julius T, Kang KH, 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, Kuzmin A, Kwon Y-J, Lange JS, Lee IS, Lee SC, Li LK, Li YB, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, Merola M, Miyata H, Mizuk R, Mohanty GB, Moon HK, Mori T, Mussa R, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park H, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Popov V, Prencipe E, Rabusov A, Rostomyan A, Russo G, Sahoo D, Sakai Y, Salehi M, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Seidl R, Seino Y, Senyo K, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata T-A, Shiu J-G, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Sumihama M, Sumiyoshi T, Sutcliffe W, Suzuki K, Takizawa M, Tamponi U, Tanida K, Tenchini F, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vahsen SE, Van Hulse C, Van Tonder R, Varner G, Vinokurova A, Vorobyev V, Waheed E, Wang B, Wang CH, Wang M-Z, Wang P, Wang XL, Watanuki S, Widmann E, Won E, Ye H, Yelton J, Yin JH, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, Zupanc A, Belle Collaboration. Observation of Transverse Λ/Λ[over ¯] Hyperon Polarization in e^{+}e^{-} Annihilation at Belle. Physical review letters. 2019 Feb;122(4):042001.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

February 2019

Volume

122

Issue

4

Start / End Page

042001

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences