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Title: Direct measurement of the pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}

Abstract

The Beijing Spectrometer (BES) experiment has observed purely leptonic decays of the {ital D}{sub {ital s}} meson in the reaction {ital e}{sup +}{ital e}{sup {minus}}{r_arrow}{ital D}{sub {ital s}}{sup +}{ital D}{sub {ital s}}{sup {minus}} at a c.m. energy of 4.03 GeV. Three events are observed in which one {ital D}{sub {ital s}} decays hadronically to {phi}{pi}, {ital K}{ovr {sup 0}}{ital K}, and the other decays leptonically to {mu}{nu}{sub {mu}} or {tau}{nu}{sub {tau}}. With the assumption of {mu}{minus}{tau} universality, values of the branching fraction, {ital B}({ital D}{sub {ital s}}{r_arrow}{mu}{nu}{sub {mu}})=(1.5{sub {minus}0.6{minus}0.2}{sup +1.3+0.3})%, and the {ital D}{sub {ital s}} pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}=(4.3{sub {minus}1.3{minus}0.4}{sup +1.5+0.4}){times}10{sup 2} MeV, are obtained.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Boston University
OSTI Identifier:
91885
DOE Contract Number:  
FG02-91ER40676; FG03-92ER40701; FG03-93ER40788; AC02-76ER03069
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 74; Journal Issue: 23; Other Information: PBD: 5 Jun 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; D S MESONS; LEPTONIC DECAY; ELECTRON-POSITRON INTERACTIONS; CENTER-OF-MASS SYSTEM; PARTICLE PRODUCTION; BEIJING ELECTRON-POSITRON COLLIDER; SPECTROMETERS; GEV RANGE 01-10; ELECTRON-MUON UNIVERSALITY; BRANCHING RATIO

Citation Formats

Bai, J Z, Bardon, O, Blum, I, Breakstone, A, Burnett, T, Chen, G P, Chen, H F, Chen, J, Chen, S J, Chen, S M, Chen, Y, Chen, Y B, Chen, Y Q, Cheng, B S, Cowan, R F, Cui, H C, Cui, X Z, Ding, H L, Du, Z Z, Dunwoodie, W, Fan, X L, Fang, J, Fero, M, Gao, C S, Gao, M L, Gao, S Q, Gao, W X, Gratton, P, Gu, J H, Gu, S D, Gu, W X, Gu, Y F, Guo, Y N, Han, S W, Han, Y, Harris, F A, Hatanaka, M, He, J, He, K R, He, M, Hitlin, D G, Hu, G Y, Hu, H B, Hu, T, Hu, X Q, Huang, D Q, Huang, Y Z, Izen, J M, Jia, Q P, Jiang, C H, Jin, Y, Jones, L, Kang, S H, Kelsey, M H, Kim, B K, Lai, Y F, Lan, H B, Lang, P F, Lankford, A, Li, F, Li, J, Li, P Q, Li, Q, Li, R B, Li, W, Li, W D, Li, W G, Li, X, Li, X N, Lin, S Z, Liu, H M, Liu, J H, Liu, Q, Liu, R G, Liu, Y, Liu, Z A, Lou, X C, Lowery, B, Lu, J G, Ma, A M, Ma, E C, Ma, J M, Mao, H S, Mao, Z P, Malchow, R, Mandelkern, M, Meng, X C, Ni, H L, Nie, J, Olsen, S L, Oyang, J, Paluselli, D, Pan, L J, Panetta, J, Porter, F, Prabhakar, E, Qi, N D, Que, Y K, Quigley, J, Rong, G, Schernau, M, Schmid, B, Schultz, J, Shao, Y Y, Shen, D L, Shen, H, Shen, X Y, Sheng, H Y, Shi, H Z, Shi, X R, Smith, A, Soderstrom, E, Song, X F, Standifird, J, Stoker, D, Sun, F, Sun, H S, Sun, S J, Synodinos, J, Tan, Y P, Tang, S Q, Toki, W, Tong, G L, Torrence, E, Wang, F, Wang, L S, Wang, L Z, Wang, M, Wang, P, Wang, P L, Wang, S M, Wang, T J, Wang, W, Wang, Y Y, Whittaker, S, Wilson, R, Wisniewski, W J, Xi, D M, Xia, X M, Xie, P P, Xu, D Z, Xu, R S, Xu, Z Q, Xue, S T, Yamamoto, R, Yan, J, Yan, W G, Yang, C M, Yang, C Y, Yang, W, Yao, H B, Ye, M H, Ye, S Z, Yu, C S, Yu, C X, Yu, Z Q, Yuan, C Z, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H L, Zhang, J, Zhang, J W, Zhang, L S, Zhang, S Q, Zhang, Y, Zhang, Y Y, Zhao, D X, Zhao, J W, Zhao, M, Zhao, P D, Zhao, W R, Zhao, W X, Zheng, J P, and BES Collabo.. Direct measurement of the pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}. United States: N. p., 1995. Web. doi:10.1103/PhysRevLett.74.4599.
Bai, J Z, Bardon, O, Blum, I, Breakstone, A, Burnett, T, Chen, G P, Chen, H F, Chen, J, Chen, S J, Chen, S M, Chen, Y, Chen, Y B, Chen, Y Q, Cheng, B S, Cowan, R F, Cui, H C, Cui, X Z, Ding, H L, Du, Z Z, Dunwoodie, W, Fan, X L, Fang, J, Fero, M, Gao, C S, Gao, M L, Gao, S Q, Gao, W X, Gratton, P, Gu, J H, Gu, S D, Gu, W X, Gu, Y F, Guo, Y N, Han, S W, Han, Y, Harris, F A, Hatanaka, M, He, J, He, K R, He, M, Hitlin, D G, Hu, G Y, Hu, H B, Hu, T, Hu, X Q, Huang, D Q, Huang, Y Z, Izen, J M, Jia, Q P, Jiang, C H, Jin, Y, Jones, L, Kang, S H, Kelsey, M H, Kim, B K, Lai, Y F, Lan, H B, Lang, P F, Lankford, A, Li, F, Li, J, Li, P Q, Li, Q, Li, R B, Li, W, Li, W D, Li, W G, Li, X, Li, X N, Lin, S Z, Liu, H M, Liu, J H, Liu, Q, Liu, R G, Liu, Y, Liu, Z A, Lou, X C, Lowery, B, Lu, J G, Ma, A M, Ma, E C, Ma, J M, Mao, H S, Mao, Z P, Malchow, R, Mandelkern, M, Meng, X C, Ni, H L, Nie, J, Olsen, S L, Oyang, J, Paluselli, D, Pan, L J, Panetta, J, Porter, F, Prabhakar, E, Qi, N D, Que, Y K, Quigley, J, Rong, G, Schernau, M, Schmid, B, Schultz, J, Shao, Y Y, Shen, D L, Shen, H, Shen, X Y, Sheng, H Y, Shi, H Z, Shi, X R, Smith, A, Soderstrom, E, Song, X F, Standifird, J, Stoker, D, Sun, F, Sun, H S, Sun, S J, Synodinos, J, Tan, Y P, Tang, S Q, Toki, W, Tong, G L, Torrence, E, Wang, F, Wang, L S, Wang, L Z, Wang, M, Wang, P, Wang, P L, Wang, S M, Wang, T J, Wang, W, Wang, Y Y, Whittaker, S, Wilson, R, Wisniewski, W J, Xi, D M, Xia, X M, Xie, P P, Xu, D Z, Xu, R S, Xu, Z Q, Xue, S T, Yamamoto, R, Yan, J, Yan, W G, Yang, C M, Yang, C Y, Yang, W, Yao, H B, Ye, M H, Ye, S Z, Yu, C S, Yu, C X, Yu, Z Q, Yuan, C Z, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H L, Zhang, J, Zhang, J W, Zhang, L S, Zhang, S Q, Zhang, Y, Zhang, Y Y, Zhao, D X, Zhao, J W, Zhao, M, Zhao, P D, Zhao, W R, Zhao, W X, Zheng, J P, & BES Collabo.. Direct measurement of the pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}. United States. https://doi.org/10.1103/PhysRevLett.74.4599
Bai, J Z, Bardon, O, Blum, I, Breakstone, A, Burnett, T, Chen, G P, Chen, H F, Chen, J, Chen, S J, Chen, S M, Chen, Y, Chen, Y B, Chen, Y Q, Cheng, B S, Cowan, R F, Cui, H C, Cui, X Z, Ding, H L, Du, Z Z, Dunwoodie, W, Fan, X L, Fang, J, Fero, M, Gao, C S, Gao, M L, Gao, S Q, Gao, W X, Gratton, P, Gu, J H, Gu, S D, Gu, W X, Gu, Y F, Guo, Y N, Han, S W, Han, Y, Harris, F A, Hatanaka, M, He, J, He, K R, He, M, Hitlin, D G, Hu, G Y, Hu, H B, Hu, T, Hu, X Q, Huang, D Q, Huang, Y Z, Izen, J M, Jia, Q P, Jiang, C H, Jin, Y, Jones, L, Kang, S H, Kelsey, M H, Kim, B K, Lai, Y F, Lan, H B, Lang, P F, Lankford, A, Li, F, Li, J, Li, P Q, Li, Q, Li, R B, Li, W, Li, W D, Li, W G, Li, X, Li, X N, Lin, S Z, Liu, H M, Liu, J H, Liu, Q, Liu, R G, Liu, Y, Liu, Z A, Lou, X C, Lowery, B, Lu, J G, Ma, A M, Ma, E C, Ma, J M, Mao, H S, Mao, Z P, Malchow, R, Mandelkern, M, Meng, X C, Ni, H L, Nie, J, Olsen, S L, Oyang, J, Paluselli, D, Pan, L J, Panetta, J, Porter, F, Prabhakar, E, Qi, N D, Que, Y K, Quigley, J, Rong, G, Schernau, M, Schmid, B, Schultz, J, Shao, Y Y, Shen, D L, Shen, H, Shen, X Y, Sheng, H Y, Shi, H Z, Shi, X R, Smith, A, Soderstrom, E, Song, X F, Standifird, J, Stoker, D, Sun, F, Sun, H S, Sun, S J, Synodinos, J, Tan, Y P, Tang, S Q, Toki, W, Tong, G L, Torrence, E, Wang, F, Wang, L S, Wang, L Z, Wang, M, Wang, P, Wang, P L, Wang, S M, Wang, T J, Wang, W, Wang, Y Y, Whittaker, S, Wilson, R, Wisniewski, W J, Xi, D M, Xia, X M, Xie, P P, Xu, D Z, Xu, R S, Xu, Z Q, Xue, S T, Yamamoto, R, Yan, J, Yan, W G, Yang, C M, Yang, C Y, Yang, W, Yao, H B, Ye, M H, Ye, S Z, Yu, C S, Yu, C X, Yu, Z Q, Yuan, C Z, Zhang, B Y, Zhang, C C, Zhang, D H, Zhang, H L, Zhang, J, Zhang, J W, Zhang, L S, Zhang, S Q, Zhang, Y, Zhang, Y Y, Zhao, D X, Zhao, J W, Zhao, M, Zhao, P D, Zhao, W R, Zhao, W X, Zheng, J P, and BES Collabo.. Mon . "Direct measurement of the pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}". United States. https://doi.org/10.1103/PhysRevLett.74.4599.
@article{osti_91885,
title = {Direct measurement of the pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}},
author = {Bai, J Z and Bardon, O and Blum, I and Breakstone, A and Burnett, T and Chen, G P and Chen, H F and Chen, J and Chen, S J and Chen, S M and Chen, Y and Chen, Y B and Chen, Y Q and Cheng, B S and Cowan, R F and Cui, H C and Cui, X Z and Ding, H L and Du, Z Z and Dunwoodie, W and Fan, X L and Fang, J and Fero, M and Gao, C S and Gao, M L and Gao, S Q and Gao, W X and Gratton, P and Gu, J H and Gu, S D and Gu, W X and Gu, Y F and Guo, Y N and Han, S W and Han, Y and Harris, F A and Hatanaka, M and He, J and He, K R and He, M and Hitlin, D G and Hu, G Y and Hu, H B and Hu, T and Hu, X Q and Huang, D Q and Huang, Y Z and Izen, J M and Jia, Q P and Jiang, C H and Jin, Y and Jones, L and Kang, S H and Kelsey, M H and Kim, B K and Lai, Y F and Lan, H B and Lang, P F and Lankford, A and Li, F and Li, J and Li, P Q and Li, Q and Li, R B and Li, W and Li, W D and Li, W G and Li, X and Li, X N and Lin, S Z and Liu, H M and Liu, J H and Liu, Q and Liu, R G and Liu, Y and Liu, Z A and Lou, X C and Lowery, B and Lu, J G and Ma, A M and Ma, E C and Ma, J M and Mao, H S and Mao, Z P and Malchow, R and Mandelkern, M and Meng, X C and Ni, H L and Nie, J and Olsen, S L and Oyang, J and Paluselli, D and Pan, L J and Panetta, J and Porter, F and Prabhakar, E and Qi, N D and Que, Y K and Quigley, J and Rong, G and Schernau, M and Schmid, B and Schultz, J and Shao, Y Y and Shen, D L and Shen, H and Shen, X Y and Sheng, H Y and Shi, H Z and Shi, X R and Smith, A and Soderstrom, E and Song, X F and Standifird, J and Stoker, D and Sun, F and Sun, H S and Sun, S J and Synodinos, J and Tan, Y P and Tang, S Q and Toki, W and Tong, G L and Torrence, E and Wang, F and Wang, L S and Wang, L Z and Wang, M and Wang, P and Wang, P L and Wang, S M and Wang, T J and Wang, W and Wang, Y Y and Whittaker, S and Wilson, R and Wisniewski, W J and Xi, D M and Xia, X M and Xie, P P and Xu, D Z and Xu, R S and Xu, Z Q and Xue, S T and Yamamoto, R and Yan, J and Yan, W G and Yang, C M and Yang, C Y and Yang, W and Yao, H B and Ye, M H and Ye, S Z and Yu, C S and Yu, C X and Yu, Z Q and Yuan, C Z and Zhang, B Y and Zhang, C C and Zhang, D H and Zhang, H L and Zhang, J and Zhang, J W and Zhang, L S and Zhang, S Q and Zhang, Y and Zhang, Y Y and Zhao, D X and Zhao, J W and Zhao, M and Zhao, P D and Zhao, W R and Zhao, W X and Zheng, J P and BES Collabo..},
abstractNote = {The Beijing Spectrometer (BES) experiment has observed purely leptonic decays of the {ital D}{sub {ital s}} meson in the reaction {ital e}{sup +}{ital e}{sup {minus}}{r_arrow}{ital D}{sub {ital s}}{sup +}{ital D}{sub {ital s}}{sup {minus}} at a c.m. energy of 4.03 GeV. Three events are observed in which one {ital D}{sub {ital s}} decays hadronically to {phi}{pi}, {ital K}{ovr {sup 0}}{ital K}, and the other decays leptonically to {mu}{nu}{sub {mu}} or {tau}{nu}{sub {tau}}. With the assumption of {mu}{minus}{tau} universality, values of the branching fraction, {ital B}({ital D}{sub {ital s}}{r_arrow}{mu}{nu}{sub {mu}})=(1.5{sub {minus}0.6{minus}0.2}{sup +1.3+0.3})%, and the {ital D}{sub {ital s}} pseudoscalar decay constant, {ital f}{sub {ital D}{sub {ital s}}}=(4.3{sub {minus}1.3{minus}0.4}{sup +1.5+0.4}){times}10{sup 2} MeV, are obtained.},
doi = {10.1103/PhysRevLett.74.4599},
url = {https://www.osti.gov/biblio/91885}, journal = {Physical Review Letters},
number = 23,
volume = 74,
place = {United States},
year = {1995},
month = {6}
}