Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K

H. Hirata; T. Iijima; Y. Kato; K. Tanida; I. Adachi; J. K. Ahn; H. Aihara; S. Al Said; D. M. Asner; H. Atmacan; T. Aushev; R. Ayad; V. Babu; Sw Banerjee; P. Behera; K. Belous; J. Bennett; M. Bessner; V. Bhardwaj; B. Bhuyan; T. Bilka; D. Biswas; A. Bobrov; D. Bodrov; J. Borah; A. Bozek; M. Bračko; P. Branchini; T. E. Browder; A. Budano; M. Campajola; D. Červenkov; M. C. Chang; P. Chang; B. G. Cheon; K. Chilikin; H. E. Cho; K. Cho; S. J. Cho; S. K. Choi; Y. Choi; S. Choudhury; D. Cinabro; S. Cunliffe; S. Das; G. De Marino; G. De Nardo; G. De Pietro; R. Dhamija; F. Di Capua; J. Dingfelder; Z. DoleŽal; T. V. Dong; D. Epifanov; T. Ferber; D. Ferlewicz; B. G. Fulsom; V. Gaur; A. Garmash; A. Giri; P. Goldenzweig; E. Graziani; K. Gudkova; C. Hadjivasiliou; S. Halder; T. Hara; K. Hayasaka; H. Hayashii; M. T. Hedges; D. Herrmann; W. S. Hou; C. L. Hsu; K. Inami; N. Ipsita; A. Ishikawa; R. Itoh; M. Iwasaki; W. W. Jacobs; E. J. Jang; S. Jia; Y. Jin; D. Kalita; C. Kiesling; C. H. Kim; D. Y. Kim; K. H. Kim; Y. K. Kim; K. Kinoshita; P. Kodyš; T. Konno; A. Korobov; S. Korpar; E. Kovalenko; P. KriŽan; P. Krokovny; T. Kuhr; R. Kumar; K. Kumara; A. Kuzmin; Y. J. Kwon; T. Lam; J. S. Lange; M. Laurenza; K. Lautenbach; S. C. Lee; L. K. Li; Y. Li; J. Libby; K. Lieret; Y. R. Lin; D. Liventsev; T. Luo; Y. Ma; A. Martini; M. Masuda; T. Matsuda; D. Matvienko; S. K. Maurya; F. Meier; M. Merola; F. Metzner; K. Miyabayashi; G. B. Mohanty; M. Mrvar; R. Mussa; I. Nakamura; M. Nakao; Z. Natkaniec; A. Natochii; L. Nayak; M. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; K. Ogawa; S. Ogawa; H. Ono; P. Oskin; P. Pakhlov; G. Pakhlova; T. Pang; S. Pardi; H. Park; J. Park; S. H. Park; S. Patra; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; T. Podobnik; E. Prencipe; M. T. Prim; N. Rout; G. Russo; S. Sandilya; A. Sangal; L. Santelj; V. Savinov; G. Schnell; C. Schwanda; A. J. Schwartz; Y. Seino; K. Senyo; M. E. Sevior; W. Shan; M. Shapkin; C. Sharma; J. G. Shiu; B. Shwartz; A. Sokolov; E. Solovieva; M. Starič; Z. S. Stottler; M. Sumihama; W. Sutcliffe; M. Takizawa; U. Tamponi; S. Tanaka; F. Tenchini; R. Tiwary; K. Trabelsi; M. Uchida; T. Uglov; Y. Unno; K. Uno; S. Uno; P. Urquijo; Y. Usov; S. E. Vahsen; G. Varner; A. Vinokurova; A. Vossen; D. Wang; E. Wang; M. Z. Wang; S. Watanuki; O. Werbycka; E. Won; X. Xu; B. D. Yabsley; W. Yan; S. B. Yang; J. Yelton; J. H. Yin; Y. Yook; C. Z. Yuan; L. Yuan; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhukova

doi:10.1103/PhysRevD.107.112011

Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K

H. Hirata, T. Iijima, Y. Kato, K. Tanida, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, Sw Banerjee, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. BhuyanT. Bilka, D. Biswas, A. Bobrov, D. Bodrov, J. Borah, A. Bozek, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, D. Červenkov, M. C. Chang, P. Chang, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. J. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, G. De Marino, G. De Nardo, G. De Pietro, R. Dhamija, F. Di Capua, J. Dingfelder, Z. DoleŽal, T. V. Dong, D. Epifanov, T. Ferber, D. Ferlewicz, B. G. Fulsom, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, E. Graziani, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, D. Herrmann, W. S. Hou, C. L. Hsu, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, E. J. Jang, S. Jia, Y. Jin, D. Kalita, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, Y. K. Kim, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. KriŽan, P. Krokovny, T. Kuhr, R. Kumar, K. Kumara, A. Kuzmin, Y. J. Kwon, T. Lam, J. S. Lange, M. Laurenza, K. Lautenbach, S. C. Lee, L. K. Li, Y. Li, J. Libby, K. Lieret, Y. R. Lin, D. Liventsev, T. Luo, Y. Ma, A. Martini, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, F. Meier, M. Merola, F. Metzner, K. Miyabayashi, G. B. Mohanty, M. Mrvar, R. Mussa, I. Nakamura, M. Nakao, Z. Natkaniec, A. Natochii, L. Nayak, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, K. Ogawa, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, H. Park, J. Park, S. H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, E. Prencipe, M. T. Prim, N. Rout, G. Russo, S. Sandilya, A. Sangal, L. Santelj, V. Savinov, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, W. Shan, M. Shapkin, C. Sharma, J. G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, M. Starič, Z. S. Stottler, M. Sumihama, W. Sutcliffe, M. Takizawa, U. Tamponi, S. Tanaka, F. Tenchini, R. Tiwary, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, K. Uno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, G. Varner, A. Vinokurova, A. Vossen, D. Wang, E. Wang, M. Z. Wang, S. Watanuki, O. Werbycka, E. Won, X. Xu, B. D. Yabsley, W. Yan, S. B. Yang, J. Yelton, J. H. Yin, Y. Yook, C. Z. Yuan, L. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova

Department of Physics

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We present a study of the X(3872) lineshape in the decay B→X(3872)K→D0D¯∗0K using a data sample of 772×106 BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The peak near the threshold in the D0D¯∗0 invariant mass spectrum is fitted using a relativistic Breit-Wigner lineshape. We determine the mass and width parameters to be mBW=3873.71-0.50+0.56(stat)±0.13(syst) MeV/c2 and ΓBW=5.2-1.5+2.2(stat)±0.4(syst) MeV, respectively. The branching fraction is found to be B(B+→X(3872)K+)×B(X(3872)→D0D¯∗0)=(0.97-0.18+0.21(stat)±0.10(syst))×10-4. The signal from B0 decays is observed for the first time with 5.2σ significance, and the ratio of branching fractions between charged and neutral B decays is measured to be B(B0→X(3872)K0)/B(B+→X(3872)K+)=1.34-0.40+0.47(stat)-0.12+0.10(syst). The peak is also studied using a Flatté lineshape. We determine the lower limit on the DD¯∗ coupling constant g to be 0.075 at 95% credibility in the parameter region where the ratio of g to the mass difference from the D0D¯∗0 threshold is equal to -15.11 GeV-1, as measured by LHCb.

Original language	English
Article number	112011
Journal	Physical Review D
Volume	107
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.107.112011
Publication status	Published - 2023 Jun 1

Bibliographical note

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevD.107.112011

Cite this

Hirata, H., Iijima, T., Kato, Y., Tanida, K., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Banerjee, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., ... Zhukova, V. (2023). Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K. Physical Review D, 107(11), Article 112011. https://doi.org/10.1103/PhysRevD.107.112011

Hirata, H, Iijima, T, Kato, Y, Tanida, K, Adachi, I, Ahn, JK, Aihara, H, Al Said, S, Asner, DM, Atmacan, H, Aushev, T, Ayad, R, Babu, V, Banerjee, S, Behera, P, Belous, K, Bennett, J, Bessner, M, Bhardwaj, V, Bhuyan, B, Bilka, T, Biswas, D, Bobrov, A, Bodrov, D, Borah, J, Bozek, A, Bračko, M, Branchini, P, Browder, TE, Budano, A, Campajola, M, Červenkov, D, Chang, MC, Chang, P, Cheon, BG, Chilikin, K, Cho, HE, Cho, K, Cho, SJ, Choi, SK, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Das, S, De Marino, G, De Nardo, G, De Pietro, G, Dhamija, R, Di Capua, F, Dingfelder, J, DoleŽal, Z, Dong, TV, Epifanov, D, Ferber, T, Ferlewicz, D, Fulsom, BG, Gaur, V, Garmash, A, Giri, A, Goldenzweig, P, Graziani, E, Gudkova, K, Hadjivasiliou, C, Halder, S, Hara, T, Hayasaka, K, Hayashii, H, Hedges, MT, Herrmann, D, Hou, WS, Hsu, CL, Inami, K, Ipsita, N, Ishikawa, A, Itoh, R, Iwasaki, M, Jacobs, WW, Jang, EJ, Jia, S, Jin, Y, Kalita, D, Kiesling, C, Kim, CH, Kim, DY, Kim, KH, Kim, YK, Kinoshita, K, Kodyš, P, Konno, T, Korobov, A, Korpar, S, Kovalenko, E, KriŽan, P, Krokovny, P, Kuhr, T, Kumar, R, Kumara, K, Kuzmin, A, Kwon, YJ, Lam, T, Lange, JS, Laurenza, M, Lautenbach, K, Lee, SC, Li, LK, Li, Y, Libby, J, Lieret, K, Lin, YR, Liventsev, D, Luo, T, Ma, Y, Martini, A, Masuda, M, Matsuda, T, Matvienko, D, Maurya, SK, Meier, F, Merola, M, Metzner, F, Miyabayashi, K, Mohanty, GB, Mrvar, M, Mussa, R, Nakamura, I, Nakao, M, Natkaniec, Z, Natochii, A, Nayak, L, Nayak, M, Niiyama, M, Nisar, NK, Nishida, S, Ogawa, K, Ogawa, S, Ono, H, Oskin, P, Pakhlov, P, Pakhlova, G, Pang, T, Pardi, S, Park, H, Park, J, Park, SH, Patra, S, Paul, S, Pedlar, TK, Pestotnik, R, Piilonen, LE, Podobnik, T, Prencipe, E, Prim, MT, Rout, N, Russo, G, Sandilya, S, Sangal, A, Santelj, L, Savinov, V, Schnell, G, Schwanda, C, Schwartz, AJ, Seino, Y, Senyo, K, Sevior, ME, Shan, W, Shapkin, M, Sharma, C, Shiu, JG, Shwartz, B, Sokolov, A, Solovieva, E, Starič, M, Stottler, ZS, Sumihama, M, Sutcliffe, W, Takizawa, M, Tamponi, U, Tanaka, S, Tenchini, F, Tiwary, R, Trabelsi, K, Uchida, M, Uglov, T, Unno, Y, Uno, K, Uno, S, Urquijo, P, Usov, Y, Vahsen, SE, Varner, G, Vinokurova, A, Vossen, A, Wang, D, Wang, E, Wang, MZ, Watanuki, S, Werbycka, O, Won, E, Xu, X, Yabsley, BD, Yan, W, Yang, SB, Yelton, J, Yin, JH, Yook, Y, Yuan, CZ, Yuan, L, Yusa, Y, Zhang, ZP, Zhilich, V & Zhukova, V 2023, 'Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K', Physical Review D, vol. 107, no. 11, 112011. https://doi.org/10.1103/PhysRevD.107.112011

@article{72fe99e9619849a98bef9d05cee897fc,

title = "Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K",

abstract = "We present a study of the X(3872) lineshape in the decay B→X(3872)K→D0D¯∗0K using a data sample of 772×106 BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The peak near the threshold in the D0D¯∗0 invariant mass spectrum is fitted using a relativistic Breit-Wigner lineshape. We determine the mass and width parameters to be mBW=3873.71-0.50+0.56(stat)±0.13(syst) MeV/c2 and ΓBW=5.2-1.5+2.2(stat)±0.4(syst) MeV, respectively. The branching fraction is found to be B(B+→X(3872)K+)×B(X(3872)→D0D¯∗0)=(0.97-0.18+0.21(stat)±0.10(syst))×10-4. The signal from B0 decays is observed for the first time with 5.2σ significance, and the ratio of branching fractions between charged and neutral B decays is measured to be B(B0→X(3872)K0)/B(B+→X(3872)K+)=1.34-0.40+0.47(stat)-0.12+0.10(syst). The peak is also studied using a Flatt{\'e} lineshape. We determine the lower limit on the DD¯∗ coupling constant g to be 0.075 at 95% credibility in the parameter region where the ratio of g to the mass difference from the D0D¯∗0 threshold is equal to -15.11 GeV-1, as measured by LHCb.",

author = "H. Hirata and T. Iijima and Y. Kato and K. Tanida and I. Adachi and Ahn, {J. K.} and H. Aihara and {Al Said}, S. and Asner, {D. M.} and H. Atmacan and T. Aushev and R. Ayad and V. Babu and Sw Banerjee and P. Behera and K. Belous and J. Bennett and M. Bessner and V. Bhardwaj and B. Bhuyan and T. Bilka and D. Biswas and A. Bobrov and D. Bodrov and J. Borah and A. Bozek and M. Bra{\v c}ko and P. Branchini and Browder, {T. E.} and A. Budano and M. Campajola and D. {\v C}ervenkov and Chang, {M. C.} and P. Chang and Cheon, {B. G.} and K. Chilikin and Cho, {H. E.} and K. Cho and Cho, {S. J.} and Choi, {S. K.} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and S. Das and {De Marino}, G. and {De Nardo}, G. and {De Pietro}, G. and R. Dhamija and {Di Capua}, F. and J. Dingfelder and Z. Dole{\v Z}al and Dong, {T. V.} and D. Epifanov and T. Ferber and D. Ferlewicz and Fulsom, {B. G.} and V. Gaur and A. Garmash and A. Giri and P. Goldenzweig and E. Graziani and K. Gudkova and C. Hadjivasiliou and S. Halder and T. Hara and K. Hayasaka and H. Hayashii and Hedges, {M. T.} and D. Herrmann and Hou, {W. S.} and Hsu, {C. L.} and K. Inami and N. Ipsita and A. Ishikawa and R. Itoh and M. Iwasaki and Jacobs, {W. W.} and Jang, {E. J.} and S. Jia and Y. Jin and D. Kalita and C. Kiesling and Kim, {C. H.} and Kim, {D. Y.} and Kim, {K. H.} and Kim, {Y. K.} and K. Kinoshita and P. Kody{\v s} and T. Konno and A. Korobov and S. Korpar and E. Kovalenko and P. Kri{\v Z}an and P. Krokovny and T. Kuhr and R. Kumar and K. Kumara and A. Kuzmin and Kwon, {Y. J.} and T. Lam and Lange, {J. S.} and M. Laurenza and K. Lautenbach and Lee, {S. C.} and Li, {L. K.} and Y. Li and J. Libby and K. Lieret and Lin, {Y. R.} and D. Liventsev and T. Luo and Y. Ma and A. Martini and M. Masuda and T. Matsuda and D. Matvienko and Maurya, {S. K.} and F. Meier and M. Merola and F. Metzner and K. Miyabayashi and Mohanty, {G. B.} and M. Mrvar and R. Mussa and I. Nakamura and M. Nakao and Z. Natkaniec and A. Natochii and L. Nayak and M. Nayak and M. Niiyama and Nisar, {N. K.} and S. Nishida and K. Ogawa and S. Ogawa and H. Ono and P. Oskin and P. Pakhlov and G. Pakhlova and T. Pang and S. Pardi and H. Park and J. Park and Park, {S. H.} and S. Patra and S. Paul and Pedlar, {T. K.} and R. Pestotnik and Piilonen, {L. E.} and T. Podobnik and E. Prencipe and Prim, {M. T.} and N. Rout and G. Russo and S. Sandilya and A. Sangal and L. Santelj and V. Savinov and G. Schnell and C. Schwanda and Schwartz, {A. J.} and Y. Seino and K. Senyo and Sevior, {M. E.} and W. Shan and M. Shapkin and C. Sharma and Shiu, {J. G.} and B. Shwartz and A. Sokolov and E. Solovieva and M. Stari{\v c} and Stottler, {Z. S.} and M. Sumihama and W. Sutcliffe and M. Takizawa and U. Tamponi and S. Tanaka and F. Tenchini and R. Tiwary and K. Trabelsi and M. Uchida and T. Uglov and Y. Unno and K. Uno and S. Uno and P. Urquijo and Y. Usov and Vahsen, {S. E.} and G. Varner and A. Vinokurova and A. Vossen and D. Wang and E. Wang and Wang, {M. Z.} and S. Watanuki and O. Werbycka and E. Won and X. Xu and Yabsley, {B. D.} and W. Yan and Yang, {S. B.} and J. Yelton and Yin, {J. H.} and Y. Yook and Yuan, {C. Z.} and L. Yuan and Y. Yusa and Zhang, {Z. P.} and V. Zhilich and V. Zhukova",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2023",

month = jun,

day = "1",

doi = "10.1103/PhysRevD.107.112011",

language = "English",

volume = "107",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K

AU - Hirata, H.

AU - Iijima, T.

AU - Kato, Y.

AU - Tanida, K.

AU - Adachi, I.

AU - Ahn, J. K.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Banerjee, Sw

AU - Behera, P.

AU - Belous, K.

AU - Bennett, J.

AU - Bessner, M.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bilka, T.

AU - Biswas, D.

AU - Bobrov, A.

AU - Bodrov, D.

AU - Borah, J.

AU - Bozek, A.

AU - Bračko, M.

AU - Branchini, P.

AU - Browder, T. E.

AU - Budano, A.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chang, P.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Cho, S. J.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Das, S.

AU - De Marino, G.

AU - De Nardo, G.

AU - De Pietro, G.

AU - Dhamija, R.

AU - Di Capua, F.

AU - Dingfelder, J.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Epifanov, D.

AU - Ferber, T.

AU - Ferlewicz, D.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Garmash, A.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Graziani, E.

AU - Gudkova, K.

AU - Hadjivasiliou, C.

AU - Halder, S.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hedges, M. T.

AU - Herrmann, D.

AU - Hou, W. S.

AU - Hsu, C. L.

AU - Inami, K.

AU - Ipsita, N.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Jacobs, W. W.

AU - Jang, E. J.

AU - Jia, S.

AU - Jin, Y.

AU - Kalita, D.

AU - Kiesling, C.

AU - Kim, C. H.

AU - Kim, D. Y.

AU - Kim, K. H.

AU - Kim, Y. K.

AU - Kinoshita, K.

AU - Kodyš, P.

AU - Konno, T.

AU - Korobov, A.

AU - Korpar, S.

AU - Kovalenko, E.

AU - KriŽan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumar, R.

AU - Kumara, K.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lam, T.

AU - Lange, J. S.

AU - Laurenza, M.

AU - Lautenbach, K.

AU - Lee, S. C.

AU - Li, L. K.

AU - Li, Y.

AU - Libby, J.

AU - Lieret, K.

AU - Lin, Y. R.

AU - Liventsev, D.

AU - Luo, T.

AU - Ma, Y.

AU - Martini, A.

AU - Masuda, M.

AU - Matsuda, T.

AU - Matvienko, D.

AU - Maurya, S. K.

AU - Meier, F.

AU - Merola, M.

AU - Metzner, F.

AU - Miyabayashi, K.

AU - Mohanty, G. B.

AU - Mrvar, M.

AU - Mussa, R.

AU - Nakamura, I.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Natochii, A.

AU - Nayak, L.

AU - Nayak, M.

AU - Niiyama, M.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Ogawa, K.

AU - Ogawa, S.

AU - Ono, H.

AU - Oskin, P.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Pang, T.

AU - Pardi, S.

AU - Park, H.

AU - Park, J.

AU - Park, S. H.

AU - Patra, S.

AU - Paul, S.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Podobnik, T.

AU - Prencipe, E.

AU - Prim, M. T.

AU - Rout, N.

AU - Russo, G.

AU - Sandilya, S.

AU - Sangal, A.

AU - Santelj, L.

AU - Savinov, V.

AU - Schnell, G.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Seino, Y.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shan, W.

AU - Shapkin, M.

AU - Sharma, C.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Stottler, Z. S.

AU - Sumihama, M.

AU - Sutcliffe, W.

AU - Takizawa, M.

AU - Tamponi, U.

AU - Tanaka, S.

AU - Tenchini, F.

AU - Tiwary, R.

AU - Trabelsi, K.

AU - Uchida, M.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, K.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Vahsen, S. E.

AU - Varner, G.

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AU - Wang, D.

AU - Wang, E.

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AU - Watanuki, S.

AU - Werbycka, O.

AU - Won, E.

AU - Xu, X.

AU - Yabsley, B. D.

AU - Yan, W.

AU - Yang, S. B.

AU - Yelton, J.

AU - Yin, J. H.

AU - Yook, Y.

AU - Yuan, C. Z.

AU - Yuan, L.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhukova, V.

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - We present a study of the X(3872) lineshape in the decay B→X(3872)K→D0D¯∗0K using a data sample of 772×106 BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The peak near the threshold in the D0D¯∗0 invariant mass spectrum is fitted using a relativistic Breit-Wigner lineshape. We determine the mass and width parameters to be mBW=3873.71-0.50+0.56(stat)±0.13(syst) MeV/c2 and ΓBW=5.2-1.5+2.2(stat)±0.4(syst) MeV, respectively. The branching fraction is found to be B(B+→X(3872)K+)×B(X(3872)→D0D¯∗0)=(0.97-0.18+0.21(stat)±0.10(syst))×10-4. The signal from B0 decays is observed for the first time with 5.2σ significance, and the ratio of branching fractions between charged and neutral B decays is measured to be B(B0→X(3872)K0)/B(B+→X(3872)K+)=1.34-0.40+0.47(stat)-0.12+0.10(syst). The peak is also studied using a Flatté lineshape. We determine the lower limit on the DD¯∗ coupling constant g to be 0.075 at 95% credibility in the parameter region where the ratio of g to the mass difference from the D0D¯∗0 threshold is equal to -15.11 GeV-1, as measured by LHCb.

AB - We present a study of the X(3872) lineshape in the decay B→X(3872)K→D0D¯∗0K using a data sample of 772×106 BB¯ pairs collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The peak near the threshold in the D0D¯∗0 invariant mass spectrum is fitted using a relativistic Breit-Wigner lineshape. We determine the mass and width parameters to be mBW=3873.71-0.50+0.56(stat)±0.13(syst) MeV/c2 and ΓBW=5.2-1.5+2.2(stat)±0.4(syst) MeV, respectively. The branching fraction is found to be B(B+→X(3872)K+)×B(X(3872)→D0D¯∗0)=(0.97-0.18+0.21(stat)±0.10(syst))×10-4. The signal from B0 decays is observed for the first time with 5.2σ significance, and the ratio of branching fractions between charged and neutral B decays is measured to be B(B0→X(3872)K0)/B(B+→X(3872)K+)=1.34-0.40+0.47(stat)-0.12+0.10(syst). The peak is also studied using a Flatté lineshape. We determine the lower limit on the DD¯∗ coupling constant g to be 0.075 at 95% credibility in the parameter region where the ratio of g to the mass difference from the D0D¯∗0 threshold is equal to -15.11 GeV-1, as measured by LHCb.

UR - http://www.scopus.com/inward/record.url?scp=85163952993&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.107.112011

DO - 10.1103/PhysRevD.107.112011

M3 - Article

AN - SCOPUS:85163952993

SN - 2470-0010

VL - 107

JO - Physical Review D

JF - Physical Review D

IS - 11

M1 - 112011

ER -

Study of the lineshape of X (3872) using B decays to D0 D ¯ ∗0K

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