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1. Association Between Timed Up-and-Go Test and Future Changes in the Frailty Status in a Longitudinal Study of Japanese Community-Dwelling Older Adults

Author

Wada Y, Shojima K, Tamaki K, Mori T, Kusunoki H, Onishi M, Tsuji S, Matsuzawa R, Nagai K, Sano K, Hashimoto K, Goto M, Nagasawa Y, and Shinmura K

Subjects
frailty, cardiovascular health study, older adults, physical function, timed up-and-go test, Geriatrics, RC952-954.6
Abstract

Yosuke Wada,1,2 Kensaku Shojima,1 Kayoko Tamaki,1 Takara Mori,1,3 Hiroshi Kusunoki,1,4 Masaaki Onishi,5 Shotaro Tsuji,5,6 Ryota Matsuzawa,7 Koutatsu Nagai,7 Kyoko Sano,8 Kana Hashimoto,9 Masashi Goto,10 Yasuyuki Nagasawa,1 Ken Shinmura1,10 1Department of General Internal Medicine, School of Medicine, Hyogo Medical University, Nishinomiya, Japan; 2Roppou Clinic, Toyooka, Hyogo, Japan; 3Amagasaki Medical COOP Honden Clinic, Amagasaki, Hyogo, Japan; 4Department of Internal Medicine, Osaka Dental University, Hirakata, Japan; 5Department of Orthopedic Surgery, School of Medicine, Hyogo Medical University, Nishinomiya, Japan; 6Department of Orthopedic Surgery, Tatsuno City Hospital, Tatsuno, Japan; 7Department of Physical Therapy, School of Rehabilitation, Hyogo Medical University, Kobe, Japan; 8Takarazuka Rehabilitation Hospital, Takarazuka, Japan; 9School of Pharmacy, Hyogo Medical University, Kobe, Japan; 10Department of General Medicine and Community Health Science, Hyogo Medical University, Sasayama Medical Center, Tambasasayama, JapanCorrespondence: Ken Shinmura, Department of General Internal Medicine, Hyogo Medical University, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan, Tel +81-798-45-6865, Fax +81-798-45-6977, Email ke-shimmura@hyo-med.ac.jpPurpose: This study aimed to evaluate the relationship between timed up-and-go (TUG) test time and changes in frailty status in a longitudinal cohort study of rural Japanese older adults.Patients and Methods: This prospective cohort study included 545 community-dwelling older adults. Initial and 2-year follow-up surveys were conducted. We compared the number of the Japanese version of the Cardiovascular Health Study components during the follow-up period and classified the participants into three groups: the favorable change, unchanged as prefrail, and unfavorable change groups. Associations between changes in frailty status and TUG time in the first survey were examined. The predictive ability of the TUG test was determined using the receiver operating characteristic (ROC) curve.Results: The favorable change group comprised 315 individuals (57.8%), the unchanged as prefrail group 105 (19.2%), and the unfavorable change group 125 (22.9%). TUG time was associated with the favorable and unfavorable changes after adjustment for covariates (OR 0.79, 95% CI 0.68– 0.92, P=0.001 and OR 1.27, 95% CI 1.09– 1.49, P=0.002). The ROC curve of TUG time as a predictor of unfavorable changes showed an area under the curve of 0.59. A cut-off point of TUG was calculated as 6.3 s with 49.6% sensitivity and 66.0% specificity.Conclusion: TUG time in the first survey was significantly associated with changes in frailty status 2 years later. However, its predictive value as a stand-alone test is limited and has the potential to predict future changes in the frailty status in older adults in combination with other tests.Keywords: frailty, cardiovascular health study, older adults, physical function, timed up-and-go test

Published
2023

2. Is microbial biomass measurement by the chloroform fumigation extraction method biased by experimental addition of N and P?

Author

Mori T, Wang S, Wang C, Mo J, and Zhang W

Subjects
Chloroform Fumigation Extraction, Microbial Biomass, Nitrogen, Phosphorus, Soil, Tropical Forest, Forestry, SD1-669.5
Abstract

The chloroform fumigation extraction (CFE) method determines microbial biomass carbon (MBC) or nitrogen (MBN) by calculating the increase in extractable carbon (C) or nitrogen (N) due to microbial lysis during chloroform fumigation. In China, many studies have focused on the impacts of N and phosphorus (P) addition on soil MBC and MBN in forest ecosystems, where substantial atmospheric N deposition has strongly acidified soils. The addition of nutrients may alter the extraction process applied in the CFE method, potentially influencing the MBC and MBN determined by the CFE method independently of the actual microbial biomass. In this study, we tested whether the MBC and MBN determined by the CFE method were biased by the experimental addition of N and P in strongly acidified Chinese forest soils by adding N and P to the soils immediately before chloroform fumigation, which should not affect the actual microbial biomass. P addition significantly elevated the dissolved organic carbon (DOC) content, especially after fumigation, while N addition significantly reduced the dissolved nitrogen (DN) content. The added N was subtracted using blank samples without soil. However, the altered DOC and DN contents did not affect the MBC and MBN contents determined by the CFE method. In conclusion, our study suggests that the CFE is a relatively robust method to test the impacts of nutrient addition on microbial biomass in the strongly acidified soils of Chinese forests. We also suggested that: (i) even if a fertilization experiment results in an elevated DOC content following P addition, it does not necessarily indicate a stimulation of DOC production by microbes; and (ii) the soil adsorption capacity or the strength of microbial N uptake during the extraction procedure applied in the CFE method may affect the determination of MBN by influencing the DN extraction efficiency.

Published
2021
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3. Search for the X17 particle in $^{7}\mathrm{Li}(\mathrm{p},\mathrm{e}^+ \mathrm{e}^{-}) ^{8}\mathrm{Be}$ processes with the MEG II detector

Author

The MEG II collaboration, Afanaciev, K., Baldini, A. M., Ban, S., Benmansour, H., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Chiappini, M., Corvaglia, A., Maso, G. Dal, De Bari, A., De Gerone, M., Barusso, L. Ferrari, Francesconi, M., Galli, L., Gallucci, G., Gatti, F., Gerritzen, L., Grancagnolo, F., Grandoni, E. G., Grassi, M., Grigoriev, D. N., Hildebrandt, M., Ignatov, F., Ikeda, F., Iwamoto, T., Karpov, S., Kettle, P. -R., Khomutov, N., Kolesnikov, A., Kravchuk, N., Krylov, V., Kuchinskiy, N., Leonetti, F., Li, W., Malyshev, V., Matsushita, A., Meucci, M., Mihara, S., Molzon, W., Mori, T., Nicolò, D., Nishiguchi, H., Ochi, A., Ootani, W., Oya, A., Palo, D., Panareo, M., Papa, A., Pettinacci, V., Popov, A., Renga, F., Ritt, S., Rossella, M., Scarpellini, A. Rozhdestvensky. S., Schwendimann, P., Signorelli, G., Takahashi, M., Uchiyama, Y., Venturini, A., Vitali, B., Voena, C., Yamamoto, K., Yokota, R., and Yonemoto, T.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

The observation of a resonance structure in the opening angle of the electron-positron pairs in the $^{7}$Li(p,\ee) $^{8}$Be reaction was claimed and interpreted as the production and subsequent decay of a hypothetical particle (X17). Similar excesses, consistent with this particle, were later observed in processes involving $^{4}$He and $^{12}$C nuclei with the same experimental technique. The MEG II apparatus at PSI, designed to search for the $\mu^+ \rightarrow \mathrm{e}^+ \gamma$ decay, can be exploited to investigate the existence of this particle and study its nature. Protons from a Cockroft-Walton accelerator, with an energy up to 1.1 MeV, were delivered on a dedicated Li-based target. The $\gamma$ and the e$^{+}$e$^{-}$ pair emerging from the $^8\mathrm{Be}^*$ transitions were studied with calorimeters and a spectrometer, featuring a broader angular acceptance than previous experiments. We present in this paper the analysis of a four-week data-taking in 2023 with a beam energy of 1080 keV, resulting in the excitation of two different resonances with Q-value \SI{17.6}{\mega\electronvolt} and \SI{18.1}{\mega\electronvolt}. No significant signal was found, and limits at \SI{90}{\percent} C.L. on the branching ratios (relative to the $\gamma$ emission) of the two resonances to X17 were set, $R_{17.6} < 1.8 \times 10^{-6} $ and $R_{18.1} < 1.2 \times 10^{-5} $., Comment: 11 pages, 9 figures, submitted to EPJC

Published
2024

4. Effects of Polymorphisms in the Serotonin Transporter Promoter-Linked Polymorphic Region on Postthoracotomy Pain Severity

Author

Kimura A, Yamasaki H, Ishii H, Yoshida H, Shimizu M, and Mori T

Subjects
5-httlpr, pain modulation, numerical rating scale, Medicine (General), R5-920
Abstract

Aya Kimura,1 Hiroyuki Yamasaki,1 Haruka Ishii,2 Hisako Yoshida,2 Motoko Shimizu,3 Takashi Mori1 1Department of Anesthesiology, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan; 2Department of Medical Statistics, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan; 3Department of Anesthesiology, Sumitomo Hospital, Osaka City, Osaka, JapanCorrespondence: Aya KimuraDepartment of Anesthesiology, Osaka City University Graduate School of Medicine, 1-5-7 Asahimachi, Abeno-ku, Osaka City, Osaka, 545-8586, JapanTel +81-6-6645-2186Fax +81-6-6645-2489Email aya1226kimura@gmail.comPurpose: Serotonin (5-HT) is highly associated with pain modulation. The human 5-HT transporter (5-HTT) gene (SLC6A4) features several polymorphisms in its promoter region (5-HTTLPR) that affect the 5-HTT expression. The S allele of 5-HTTLPR induces low 5-HT tone, and it may influence the modulation of chronic pain. Meanwhile, pain occurs in 40– 50% of patients after thoracic surgery, and its mechanism remains under investigation. This study assessed the role of 5-HTTLPR polymorphisms in postthoracotomy pain severity.Patients and Methods: A total of 178 patients undergoing pneumonectomy were enrolled. The genotypes of 5-HTTLPR were divided into two groups: S/S group and S/L or L/L group. Linear mixed-effects models were used to assess the association between 5-HTTLPR genotypes and the numerical rating scale (NRS) score change over time.Results: Among the participants, data were obtained for 162 patients. The genotype distribution was as follows: S/S, 67.3%; S/L or L/L, 32.7%. No significant difference in patient characteristics was found between the genotype groups. There was no significant interaction between the 5-HTTLPR genotypes and the NRS score change over time (p = 0.842).Conclusion: Polymorphisms in 5-HTTLPR were not associated with postthoracotomy pain severity.Keywords: 5-HTTLPR, pain modulation, numerical rating scale

Published
2021

5. Predictive Utility of Body Mass Index for Metabolic Syndrome Among Patients with Schizophrenia in Japan

Author

Sugawara N, Yasui-Furukori N, Yamazaki M, Shimoda K, Mori T, Sugai T, Matsuda H, Suzuki Y, Ozeki Y, Okamoto K, Sagae T, and Someya T

Subjects
body mass index, metabolic syndrome, schizoaffective disorder, schizophrenia, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571, Neurology. Diseases of the nervous system, RC346-429
Abstract

Norio Sugawara,1,2 Norio Yasui-Furukori,1,2 Manabu Yamazaki,3 Kazutaka Shimoda,1,2 Takao Mori,3 Takuro Sugai,2,4 Hiroshi Matsuda,3 Yutaro Suzuki,2,4 Yuji Ozeki,2,5 Kurefu Okamoto,3 Toyoaki Sagae,3,6 Toshiyuki Someya2,4 1Department of Psychiatry, Dokkyo Medical University School of Medicine, Mibu, Tochigi 321-0293, Japan; 2Japanese Society of Clinical Neuropsychopharmacology, Chiyoda-ku, Tokyo 101-0003, Japan; 3Japan Psychiatric Hospital Association, Minato-ku, Tokyo 108-8554, Japan; 4Department of Psychiatry, Graduate School of Medical and Dental Sciences, Niigata University, Chuo-ku, Niigata 951-8510, Japan; 5Department of Psychiatry, Shiga University of Medical Science, Otsu, Shiga 520-2134, Japan; 6Department of Health and Nutrition, Yamagata Prefectural Yonezawa University of Nutrition Sciences, Yonezawa, Yamagata 992-0025, JapanCorrespondence: Norio SugawaraDepartment of Psychiatry, Dokkyo Medical University School of Medicine, 880 Kitakobayashi, Mibu, Tochigi 321-0293, JapanTel +81-28-287-2153 (extension: 7141)Fax +81-28-286-5187Email nsuga3@dokkyomed.ac.jpBackground: Reliable and easy screening for metabolic syndrome (MetS) is important for patients with schizophrenia. The aim of this study was to assess the predictive utility of body mass index (BMI) for MetS among patients with schizophrenia in Japan.Methods: In total, 8468 patients (4705 males, 3763 females) with schizophrenia or schizoaffective disorders based on the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV), or the International Classification of Diseases, tenth revision (ICD-10), were assessed for MetS using the criteria of the National Cholesterol Education Program Adult Treatment Panel III (ATP III-A). We applied a stratum-specific likelihood ratio (SSLR) analysis, which is independent of the prevalence of the target disease.Results: The mean (± standard deviation) age of these patients was 57.4 ± 13.5 years. The prevalence of MetS was 20.4%. Among males, the SSLRs predicting MetS were 0.03 (95% CI 0.02– 0.06), 0.54 (95% CI 0.48– 0.60), 2.77 (95% CI 2.44– 3.14) and 8.75 (95% CI 7.40– 10.36) for BMI < 20 kg/m2, 20 kg/m2 ≤ BMI < 25 kg/m2, 25 kg/m2≤ BMI < 28 kg/m2, and 28 kg/m2≤BMI, respectively. For females, the SSLRs predicting MetS were 0.08 (95% CI 0.05– 0.12), 0.73 (95% CI 0.66– 0.82), 2.50 (95% CI 2.16– 2.90) and 4.83 (95% CI 4.12– 5.67) for the same BMI categories, respectively.Conclusion: The predictive utility of BMI is confirmed, and BMI has more predictive value in males than in females. Patients with a BMI of 28 kg/m2 or greater had a significantly higher SSLR than those with a BMI less than 28 kg/m2.Keywords: body mass index, metabolic syndrome, schizoaffective disorder, schizophrenia

Published
2020

6. Comparison of the changes in the factors associated with the renal prognosis of non-elderly and elderly subjects treated with empagliflozin- a retrospective observation study in Japanese patients with type 2 diabetes

Author

Ito H, Matsumoto S, Izutsu T, Kusano E, Nishio S, Antoku S, Yamasaki T, Mori T, Togane M, Ando S, and Tsugami E

Subjects
sodium-glucose cotransporter 2 inhibitor, empagliflozin, type 2 diabetes mellitus, elderly, renoprotection, renal impairment, Specialties of internal medicine, RC581-951
Abstract

Hiroyuki Ito1, Suzuko Matsumoto1, Takuma Izutsu1, Eiji Kusano1, Shinya Nishio1, Shinichi Antoku1, Tomoko Yamasaki1, Toshiko Mori1, Michiko Togane1, Shigenori Ando2, Emiko Tsugami2 1Department of Diabetes, Metabolism and Kidney Disease, Edogawa Hospital, Tokyo, Japan; 2Department of Pharmacy, Edogawa Hospital, Tokyo, JapanCorrespondence: Hiroyuki ItoDepartment of Diabetes, Metabolism and Kidney Disease, Edogawa Hospital, 2-24-18, Higashikoiwa, Edogawa-ku, Tokyo 133-0052, JapanTel +81 3 3673 1221Fax +81 3 3673 1229Email ito@edogawa.or.jpPurpose: The factors associated with the renal prognosis over six months after the initiation of empagliflozin were compared between the non-elderly and elderly Japanese patients with type 2 diabetes.Patients and methods: In total, 132 patients treated with empagliflozin (10 mg, once daily) were studied as the safety analysis set. One hundred ten subjects whose medications were not changed during the observation period were investigated as the full analysis set to assess the effectiveness. The subjects were divided into two groups: non-elderly subjects (n=72) of

Published
2019

7. Lamellar macular holes: monitoring and management strategies

Author

Coassin M, Mori T, Di Zazzo A, Sgrulletta R, Varacalli G, and Bonini S

Subjects
Lamellar macular holes, vitrectomy, optical coherence tomography, Ophthalmology, RE1-994
Abstract

Marco Coassin, Tommaso Mori, Antonio Di Zazzo, Roberto Sgrulletta, Giuseppe Varacalli, Stefano BoniniDepartment of Ophthalmology, University Campus Bio-Medico of Rome, Rome, ItalyAbstract: Lamellar macular holes are a vitreoretinal condition characterized by abnormalities in foveal contour with splitting of the neuroepithelium and often an intact photoreceptor layer. Recent developments in high-resolution imaging have increased our ability to study the details of the vitreoretinal interface and to distinguish between different forms of lamellar holes. A new classification is needed to help clinicians in the management of lamellar macular holes. Some clinicians prefer to observe these clinical entities, especially when visual acuity is maintained or alterations of the photoreceptor layer are present. Nevertheless, lamellar holes may sometimes progress, and visual acuity can deteriorate. On the other hand, surgical treatment may lead to positive anatomical and functional outcomes, but not without risks. This review provides a critical overview of the available data on lamellar macular holes, focusing on diagnosis and managing options.Keywords: degenerative lamellar hole, tractional lamellar hole, lamellar hole-associated epiretinal proliferation, epiretinal membrane, vitrectomy, macular surgery

Published
2019

8. Insights on induced magnetic moments and spin textures in synthetic ferrimagnetic Pt/Co/Gd heterolayers

Author

Brandão, J., Carvalho, P. C., Miranda, I. P., Mori, T. J. A., Béron, F., Bergman, A., Petrilli, H. M., Klautau, A. B., and Cezar, J. C.

Subjects
Condensed Matter - Materials Science
Abstract

To develop new devices based on synthetic ferrimagnetic (S-FiM) heterostructures, understanding the material's physical properties is pivotal. Here, the induced magnetic moment (IMM), magnetic exchange-coupling, and spin textures were investigated at room-temperature in Pt/Co/Gd multilayers using a multiscale approach. The magnitude and direction of the IMM were interpreted experimentally and theoretically in the framework of both X-ray magnetic circular dichroism (XMCD) and density functional theory (DFT). The results demonstrate that the IMM transferred by Co across the Gd paramagnetic (PM) thickness leads to a flipped spin state (FSS) within the Gd layers, in which their magnetic moments couple antiparallel/parallel with the ferromagnetic (FM) Co near/far from the Co/Gd interface, respectively. For the Pt, in both Pt/Co and Gd/Pt interfaces the IMM follows the same direction as the Co magnetic moment, with negligible IMM in the Gd/Pt interface. Additionally, zero-field spin spirals were imaged using scanning transmission X-ray microscopy (STXM), while micromagnetic simulations employed to unfold the interactions stabilizing the FiM configurations, where the existence of a sizable Dzyaloshinskii-Moriya interaction is demonstrated to be crucial for the formation of those spin textures. Our outcomes may add fundamental physical and technological aspects for using FiM films in antiferromagnetic spintronic devices.

Published
2024

9. Clinical outcomes of endoscope-assisted vitrectomy for treatment of rhegmatogenous retinal detachment

Author

Yokoyama S, Kojima T, Mori T, Matsuda T, Sato H, Yoshida N, Kaga T, Smith RT, and Ichikawa K

Subjects
Endoscope-assisted vitrectomy, endoscopic vitrectomy, ophthalmic endoscope, retinal detachment, rhegmatogenous retinal detachment, Ophthalmology, RE1-994
Abstract

Sho Yokoyama,1 Takashi Kojima,2 Toshio Mori,3 Taisuke Matsuda,1 Hiroyuki Sato,3 Norihiko Yoshida,4 Tatsushi Kaga,1 R Theodore Smith,5 Kazuo Ichikawa6 1Department of Ophthalmology, Japan Community Healthcare Organization Chukyo Hospital, Nagoya, Japan; 2Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan; 3Department of Ophthalmology, Iida Municipal Hospital, Iida, Japan; 4Department of Ophthalmology, Japanese Red Cross Gifu Hospital, Gifu, Japan; 5Department of Ophthalmology, New York University School of Medicine, New York, NY, USA; 6Chukyo Eye Clinic, Nagoya, Japan Summary: We evaluated the clinical outcomes for ophthalmic endoscope-assisted vitrectomy in consecutive patients with uncomplicated rhegmatogenous retinal detachment (RRD). The primary success rate was 98.4% (125/127) without performing a posterior drainage retinotomy or using perfluorocarbon liquids (PFCL) for subretinal fluid drainage.Purpose: To investigate the clinical outcomes of endoscope-assisted vitrectomy in patients with uncomplicated RRD.Methods: We examined 127 eyes from consecutive patients who underwent repair of RRD by 23- or 25-gauge endoscope-assisted vitrectomy, with a minimum follow-up of 3 months. Eyes with the following criteria were excluded: Giant retinal tears, grade C proliferative vitreoretinopathy, dense vitreous hemorrhage, retinal detachment secondary to other ocular diseases, and prior retinal or vitreous surgery. All cases underwent subretinal fluid drainage, endolaser photocoagulation and fundus inspection were performed under ophthalmic endoscopic observation. Success rate, visual acuity, surgery time and complications were evaluated.Results: Primary and final success rate was 98.4% (125/127) and 100% (127/127), respectively, Surgery time was 59.6±26.3 minutes. The best-corrected visual acuity significantly improved from 20/100 to 20/20 (P

Published
2017

10. Survey of Japanese ophthalmic surgeons regarding perioperative disinfection and antibiotic prophylaxis in cataract surgery

Author

Matsuura K, Mori T, Miyamoto T, Suto C, Saeki Y, Tanaka S, Kawamura H, Ohkubo S, Tanito M, and Inoue Y

Subjects
Ophthalmology, RE1-994
Abstract

Kazuki Matsuura,1 Takafumi Mori,2 Takeshi Miyamoto,3 Chikako Suto,4 Yusuke Saeki,5 Shigeto Tanaka,6 Hajime Kawamura,7 Shinji Ohkubo,8 Masaki Tanito,9,10 Yoshitsugu Inoue111Nojima Hospital, Kurayoshi, 2Department of Ophthalmology, School of Medicine, Fukushima Medical University, Fukushima, 3Department of Ophthalmology, Wakayama Medical University, Wakayama, 4Department of Ophthalmology, Tokyo Women’s Medical University, Tokyo, 5Department of Ophthalmology, School of Medicine, Fukuoka University, Fukuoka, 6Tonosho Central Hospital, Kagawa, 7Shiga University of Medical Science, Otsu, 8Department of Ophthalmology and Visual Science, Kanazawa University Graduate School of Medical Science, Kanazawa, 9Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, 10Division of Ophthalmology, Matsue Red Cross Hospital, Matsue, 11Division of Ophthalmology and Visual Science, Faculty of Medicine, Tottori University, Yonago, JapanPurpose: To elucidate Japanese trends for perioperative disinfection and antibiotic selection during cataract surgeries.Methods: Perioperative iodine use and antibiotic prophylaxis for cataract surgery were surveyed in eight regions in Japan by mail or through interviews from February 1 to March 1, 2014.Results: We surveyed 572 surgeons, of whom 386 (67%) responded. Most of the surgeons (94%) used iodine compounds before surgery for periocular skin disinfection (povidone–iodine [PI]: 79%; polyvinyl alcohol-iodine [PAI]: 15%) or conjunctival disinfection (85%; PI: 36%; PAI: 49%). Preoperative conjunctival iodine was primarily used as an eye wash (irrigation: 95%) and less often as an eye drop (5%). It was determined that 31% of surgeons waited 30 seconds or more between periocular disinfection and conjunctival disinfection. During surgery, 14% of surgeons used iodine several times, including immediately before intraocular lens insertion, and 7% used the Shimada technique (repeated iodine irrigation). Preoperative antibiotic eye drops were used by 99% of surgeons, and antibiotics were added to the irrigation bottle by 22%. The surgeons reported use of subconjunctival antibiotic injections (23%), antibiotic ointments (79%), and intracameral antibiotics (7%: 22 moxifloxacin; 6 levofloxacin). All surgeons prescribed postoperative eye drops, with 10% initiating the drops on the day of surgery.Conclusion: Iodine compounds are commonly used preoperatively, but few institutions use iodine compounds intraoperatively, particularly with repeated application. The selection of antibiotic administration and disinfection technique has to be at the surgeon’s discretion. However, intracameral antibiotic and intraoperative iodine compound use are techniques that should be widely recognized.Keywords: intracameral antibiotic, intraoperative iodine, antibiotic prophylaxis, cataract surgery, endophthalmitis

Published
2014

11. Daptomycin approved in Japan for the treatment of methicillin-resistant Staphylococcus aureus

Author

Mori T, Umemura T, Hagihara M, and Mikamo H

Subjects
Therapeutics. Pharmacology, RM1-950
Abstract

Mao Hagihara1, Takumi Umemura1, Takeshi Mori1,2, Hiroshige Mikamo11Department of Infection Control and Prevention, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan; 2Division of Pharmaceutical Science, Faculty of Pharmacy, Meijo University, Nagoya, Aichi, JapanAbstract: Daptomycin is a lipoglycopeptide antibacterial drug that is rapidly bactericidal for methicillin-resistant Staphylococcus aureus (MRSA) infection and has antibiotic activity against a wide range of Gram-positive organisms. It has been approved by the Ministry of Health, Labor and Welfare in Japan for the treatment for bacteremia, right-sided endocarditis, and skin and skin-structure infections, such as necrotizing fasciitis, due to MRSA on the basis of a Phase III trial conducted in Japan since July, 2011. In Japanese Phase I and III trials, daptomycin therapy given at 4 mg/kg and 6 mg/kg once per day was well tolerated and effective as standard therapy for the treatment of acute bacterial skin and skin-structure infections and bacteremia caused by MRSA, but side effects remain to be evaluated in large-scale trials.Keywords: daptomycin, methicillin-resistant Staphylococcus aureus (MRSA), Japan

Published
2012

12. Neutron Tagging following Atmospheric Neutrino Events in a Water Cherenkov Detector

Author

Abe, K., Haga, Y., Hayato, Y., Hiraide, K., Ieki, K., Ikeda, M., Imaizumi, S., Iyogi, K., Kameda, J., Kanemura, Y., Kataoka, Y., Kato, Y., Kishimoto, Y., Miki, S., Mine, S., Miura, M., Mochizuki, T., Moriyama, S., Nagao, Y., Nakahata, M., Nakajima, T., Nakano, Y., Nakayama, S., Okada, T., Okamoto, K., Orii, A., Sato, K., Sekiya, H., Shiozawa, M., Sonoda, Y., Suzuki, Y., Takeda, A., Takemoto, Y., Takenaka, A., Tanaka, H., Tasaka, S., Tomura, T., Ueno, K., Watanabe, S., Yano, T., Yokozawa, T., Han, S., Irvine, T., Kajita, T., Kametani, I., Kaneyuki, K., Lee, K. P., McLachlan, T., Okumura, K., Richard, E., Tashiro, T., Wang, R., Xia, J., Megias, G. D., Bravo-Berguño, D., Labarga, L., Zaldivar, B., Goldhaber, M., Blaszczyk, F. d. M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Sussman, S., Wan, L., Wester, T., Pointon, B. W., Bian, J., Carminati, G., Elnimr, M., Griskevich, N. J., Kropp, W. R., Locke, S., Renshaw, A., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Ganezer, K. S., Hartfiel, B. L., Hill, J., Keig, W. E., Hong, N., Kim, J. Y., Lim, I. T., Park, R. G., Akiri, T., Bodur, B., Himmel, A., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C. W., Wongjirad, T., Bernard, L., Coffani, A., Drapier, O., Hedri, S. El, Giampaolo, A., Imber, J., Mueller, Th. A., Paganini, P., Quilain, B., Ishizuka, T., Nakamura, T., Jang, J. S., Choi, K., Learned, J. G., Matsuno, S., Smith, S. N., Amey, J., Anthony, L. H. V., Litchfield, R. P., Ma, W. Y., Marin, D., Sztuc, A. A., Uchida, Y., Wascko, M. O., Berardi, V., Catanesi, M. G., Intonti, R. A., Radicioni, E., Calabria, N. F., De Rosa, G., Machado, L. N., Collazuol, G., Iacob, F., Lamoureux, M., Ospina, N., Ludovici, L., Gonin, M., Pronost, G., Maekawa, Y., Nishimura, Y., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Jakkapu, M., Kobayashi, T., Matsubara, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Boschi, T., Di Lodovico, F., Migenda, J., Sedgwick, S. Molina, Taani, M., Zsoldos, S., Abe, KE., Hasegawa, M., Isobe, Y., Kotsar, Y., Miyabe, H., Ozaki, H., Shiozawa, T., Sugimoto, T., Suzuki, A. T., Takeuchi, Y., Yamamoto, S., Ali, A., Ashida, Y., Bronner, C., Feng, J., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Jiang, M., Kikawa, T., Mori, M., Murakami, A., Nakamura, KE., Nakaya, T., Patel, N. D., Suzuki, K., Takahashi, S., Tateishi, K., Wendell, R. A., Yasutome, K., Fernandez, P., McCauley, N., Mehta, P., Pritchard, A., Tsui, K. M., Fukuda, Y., Itow, Y., Menjo, H., Mitsuka, G., Murase, M., Muto, F., Niwa, T., Tsukada, T. Suzuki M., Frankiewicz, K., Mijakowski, P., Hignight, J., Jiang, J., Jung, C. K., Li, X., Palomino, J. L., Santucci, G., Vilela, C., Wilking, M. J., Yanagisawa, C., Fukuda, D., Hagiwara, K., Harada, M., Horai, T., Ishino, H., Ito, S., Kayano, T., Kibayashi, A., Kitagawa, H., Koshio, Y., Ma, W., Mori, T., Nagata, H., Piplani, N., Sakai, S., Sakuda, M., Takahira, Y., Xu, C., Yamaguchi, R., Kuno, Y., Barr, G., Barrow, D., Cook, L., Goldsack, A., Samani, S., Simpson, C., Wark, D., Nova, F., Tacik, R., Yang, J. Y., Cole, A., Jenkins, S. J., Malek, M., McElwee, J. M., Stone, O., Thiesse, M. D., Thompson, L. F., Okazawa, H., Choi, Y., Kim, S. B., Yu, I., Ichikawa, A. K., Ito, K., Nishijima, K., Calland, R. G., de Perio, P., Martens, K., Murdoch, M., Vagins, M. R., Koshiba, M., Totsuka, Y., Iwamoto, K., Nakajima, Y., Ogawa, N., Suda, Y., Yokoyama, M., Hamabe, D., Izumiyama, S., Kuze, M., Okajima, Y., Tanaka, M., Yoshida, T., Inomoto, M., Ishitsuka, M., Ito, H., Matsumoto, R., Ohta, K., Shinoki, M., Martin, J. F., Nantais, C. M., Tanaka, H. A., Towstego, T., Akutsu, R., Hartz, M., Konaka, A., Prouse, N. W., Chen, S., Xu, B. D., Zhang, Y., Berkman, S., Tobayama, S., Connolly, K., Wilkes, R. J., Posiadala-Zezula, M., Hadley, D., Richards, B., Jamieson, B., Walker, J., Marti, Ll., Minamino, A., Pintaudi, G., Sano, S., and Sasaki, R.

Subjects
High Energy Physics - Experiment, Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. The uncertainty of the tagging efficiency is estimated to be 9.0%. Measurement of the tagging efficiency with data from an Americium-Beryllium calibration agrees with this value within 10%. The tagging procedure was performed on 3,244.4 days of SK-IV atmospheric neutrino data, identifying 18,091 neutrons in 26,473 neutrino events. The fitted neutron capture lifetime was measured as 218 \pm 9 \mu s.

Published
2022
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14. Unusually strong electronic correlation and field-induced ordered phase in YbCo$_2$

Author

Valenta, J., Tsujii, N., Yamaoka, H., Honda, F., Hirose, Y., Sakurai, H., Terada, N., Naka, T., Nakane, T., Koizumi, T., Ishii, H., Hiraoka, N., and Mori, T.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

We report the first study of electrical resistivity, magnetization, and specific heat on YbCo$_2$. The measurements on a single-phased sample of YbCo$_2$ bring no evidence of magnetic ordering down to 0.3 K in a zero magnetic field. The manifestations of low Kondo temperature are observed. The specific heat value divided by temperature, C/T, keeps increasing logarithmically beyond 7 J/mol.K2 with decreasing temperature down to 0.3 K without no sign of magnetic ordering, suggesting a very large electronic specific heat. Analysis of the magnetic specific heat indicates that the large portion of the low-temperature specific heat is not explained simply by the low Kondo temperature but is due to the strong intersite magnetic correlation in both the 3d and 4f electrons. Temperature-dependent measurements under static magnetic fields up to 7 T are carried out, which show the evolution of field-induced transition above 2 T. The transition temperature increases with increasing field, pointing to a ferromagnetic character. The extrapolation of the transition temperature to zero field suggests that YbCo$_2$ is in the very proximity of the quantum critical point. These results indicate that in the unique case of YbCo$_2$, the itinerant electron magnetism of Co 3d-electrons and the Kondo effect within the vicinity of quantum criticality of Yb 4f-local moments can both play a role.

Published
2022
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15. Japan's Strategy for Future Projects in High Energy Physics

Author

Endo, M., Hamaguchi, K., Ibe, M., Ishibashi, T., Ishikawa, A., Ishino, M., Ishitsuka, M., Kanemura, S., Kuriki, M., Mori, T., Moriyama, S., Nanjo, H., Ootani, W., and Sato, Y.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Accelerator Physics, Physics - Instrumentation and Detectors
Abstract

The current strategy for future projects of the Japanese high energy physics community, Japan Association of High Energy Physicists (JAHEP), remains as described in the Final Report of the Committee on Future Projects in High Energy Physics, published in 2017. The Recommendation part of the Final Report is excerpted in the following page. This document updates the Final Report by adding developments and advances that have occurred since 2017., Comment: Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)

Published
2022

16. Testing Lepton Flavor Universality and CKM Unitarity with Rare Pion Decays in the PIONEER experiment

Author

PIONEER Collaboration, Altmannshofer, W., Binney, H., Blucher, E., Bryman, D., Caminada, L., Chen, S., Cirigliano, V., Corrodi, S., Crivellin, A., Cuen-Rochin, S., Di Canto, A., Doria, L., Gaponenko, A., Garcia, A., Gibbons, L., Glaser, C., Godoy, M. Escobar, Göldi, D., Gori, S., Gorringe, T., Hertzog, D., Hodge, Z., Hoferichter, M., Ito, S., Iwamoto, T., Kammel, P., Kiburg, B., Labe, K., LaBounty, J., Langenegger, U., Malbrunot, C., Mazza, S. M., Mihara, S., Mischke, R., Mori, T., Mott, J., Numao, T., Ootani, W., Ott, J., Pachal, K., Polly, C., Počanić, D., Qian, X., Ries, D., Roehnelt, R., Schumm, B., Schwendimann, P., Seiden, A., Sher, A., Shrock, R., Soter, A., Sullivan, T., Tarka, M., Tischenko, V., Tricoli, A., Velghe, B., Wong, V., Worcester, E., Worcester, M., and Zhang, C.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

The physics motivation and the conceptual design of the PIONEER experiment, a next-generation rare pion decay experiment testing lepton flavor universality and CKM unitarity, are described. Phase I of the PIONEER experiment, which was proposed and approved at Paul Scherrer Institut, aims at measuring the charged-pion branching ratio to electrons vs.\ muons, $R_{e/\mu}$, 15 times more precisely than the current experimental result, reaching the precision of the Standard Model (SM) prediction at 1 part in $10^4$. Considering several inconsistencies between the SM predictions and data pointing towards the potential violation of lepton flavor universality, the PIONEER experiment will probe non-SM explanations of these anomalies through sensitivity to quantum effects of new particles up to the PeV mass scale. The later phases of the PIONEER experiment aim at improving the experimental precision of the branching ratio of pion beta decay (BRPB), $\pi^+\to \pi^0 e^+ \nu (\gamma)$, currently at $1.036(6)\times10^{-8}$, by a factor of three (Phase II) and an order of magnitude (Phase III). Such precise measurements of BRPB will allow for tests of CKM unitarity in light of the Cabibbo Angle Anomaly and the theoretically cleanest extraction of $|V_{ud}|$ at the 0.02\% level, comparable to the deduction from superallowed beta decays., Comment: contribution to Snowmass 2021 based on the PIONEER proposal (arXiv:2203.01981)

Published
2022

17. PIONEER: Studies of Rare Pion Decays

Author

PIONEER Collaboration, Altmannshofer, W., Binney, H., Blucher, E., Bryman, D., Caminada, L., Chen, S., Cirigliano, V., Corrodi, S., Crivellin, A., Cuen-Rochin, S., DiCanto, A., Doria, L., Gaponenko, A., Garcia, A., Gibbons, L., Glaser, C., Godoy, M. Escobar, Göldi, D., Gori, S., Gorringe, T., Hertzog, D., Hodge, Z., Hoferichter, M., Ito, S., Iwamoto, T., Kammel, P., Kiburg, B., Labe, K., LaBounty, J., Langenegger, U., Malbrunot, C., Mazza, S. M., Mihara, S., Mischke, R., Mori, T., Mott, J., Numao, T., Ootani, W., Ott, J., Pachal, K., Polly, C., Počanić, D., Qian, X., Ries, D., Roehnelt, R., Schumm, B., Schwendimann, P., Seiden, A., Sher, A., Shrock, R., Soter, A., Sullivan, T., Tarka, M., Tischenko, V., Tricoli, A., Velghe, B., Wong, V., Worcester, E., Worcester, M., and Zhang, C.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

A next-generation rare pion decay experiment, PIONEER, is strongly motivated by several inconsistencies between Standard Model (SM) predictions and data pointing towards the potential violation of lepton flavor universality. It will probe non-SM explanations of these anomalies through sensitivity to quantum effects of new particles even if their masses are at very high scales. Measurement of the charged-pion branching ratio to electrons vs. muons $R_{e/\mu}$ is extremely sensitive to new physics effects. At present, the SM prediction for $R_{e/\mu}$ is known to 1 part in $10^4$, which is 15 times more precise than the current experimental result. An experiment reaching the theoretical accuracy will test lepton flavor universality at an unprecedented level, probing mass scales up to the PeV range. Measurement of pion beta decay, $\pi^+\to \pi^0 e^+ \nu (\gamma)$, with 3 to 10-fold improvement in sensitivity, will determine $V_{ud}$ in a theoretically pristine manner and test CKM unitarity, which is very important in light of the recently emerged tensions. In addition, various exotic rare decays involving sterile neutrinos and axions will be searched for with unprecedented sensitivity. The experiment design benefits from experience with the recent PIENU and PEN experiments at TRIUMF and the Paul Scherrer Institut (PSI). Excellent energy and time resolutions, greatly increased calorimeter depth, high-speed detector and electronics response, large solid angle coverage, and complete event reconstruction are all critical aspects of the approach. The PIONEER experiment design includes a 3$\pi$ sr 25 radiation length calorimeter, a segmented low gain avalanche detector stopping target, a positron tracker, and other detectors. Using intense pion beams, and state-of-the-art instrumentation and computational resources, the experiments can be performed at the PSI ring cyclotron.

Published
2022

19. Search for the decay $B_s^0\rightarrow\eta\eta$

Author

Belle Collaboration, Bhuyan, B., Nath, K. J., Borah, J., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Behera, P., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Di Carlo, S., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Haba, J., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nakano, T., Nakao, M., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shiu, J. -G., Solovieva, E., Starič, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vossen, A., Wang, C. H., Wang, M. -Z., Wang, P., Wiechczynski, J., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment
Abstract

We report results from a search for the decay $B_s^0\rightarrow\eta\eta$ using 121.4 fb$^{-1}$ of data collected at the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We do not observe any signal and set an upper limit on the branching fraction of $14.3\times 10^{-5}$ at $90\%$ confidence level. This result represents a significant improvement over the previous most stringent limit., Comment: 7 pages, 6 figures

Published
2021
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20. Science Case for the new High-Intensity Muon Beams HIMB at PSI

Author

Aiba, M., Amato, A., Antognini, A., Ban, S., Berger, N., Caminada, L., Chislett, R., Crivelli, P., Crivellin, A., Maso, G. Dal, Davidson, S., Hoferichter, M., Iwai, R., Iwamoto, T., Kirch, K., Knecht, A., Langenegger, U., Lombardi, A. M., Luetkens, H., Aeschbacher, F. Meier, Mori, T., Nuber, J., Ootani, W., Papa, A., Prokscha, T., Renga, F., Ritt, S., Sakurai, M., Salman, Z., Schmidt-Wellenburg, P., Schöning, A., Signer, A., Soter, A., Stingelin, L., Uchiyama, Y., and Wauters, F.

Subjects
High Energy Physics - Experiment, Condensed Matter - Materials Science, High Energy Physics - Phenomenology
Abstract

In April 2021, scientists active in muon physics met to discuss and work out the physics case for the new High-Intensity Muon Beams (HIMB) project at PSI that could deliver of order $10^{10}$\,s$^{-1}$ surface muons to experiments. Ideas and concrete proposals were further substantiated over the following months and assembled in the present document. The high intensities will allow for completely new experiments with considerable discovery potential and unique sensitivities. The physics case is outstanding and extremely rich, ranging from fundamental particle physics via chemistry to condensed matter research and applications in energy research and elemental analysis. In all these fields, HIMB will ensure that the facilities S$\mu$S and CHRISP on PSI's High Intensity Proton Accelerator complex HIPA remain world-leading, despite the competition of muon facilities elsewhere., Comment: 116 pages, 42 figures

Published
2021

21. Search for $Z^{'} \rightarrow \mu^{+} \mu^{-}$ in the $L_\mu {-} L_\tau$ gauge-symmetric model at Belle

Author

Czank, T., Jaegle, I., Ishikawa, A., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Bennett, J., Bernlochner, F., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Higuchi, T., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kodyš, P., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumara, K., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, I. S., Lee, S. C., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mohanty, S., Mori, T., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Niiyama, M., Nisar, N. K., Nishida, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shebalin, V., Shen, C. P., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Uno, K., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanuki, S., Won, E., Xu, X., Yabsley, B. D., Yamamoto, H., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We search for a new gauge boson $Z'$ that couples only to heavy leptons and their corresponding neutrinos in the process $e^{+} e^{-} \rightarrow Z'(\rightarrow \mu^{+}\mu^{-}) \mu^{+}\mu^{-}$, using a 643 fb$^{-1}$ data sample collected by the Belle experiment at or near the $\Upsilon(1S,2S,3S,4S,5S)$ resonances at the KEKB collider. For the first time, effects due to initial state radiation are used in estimating the detection efficiency. No signal is observed in the mass range of 0.212 \ -- 10 GeV/${\it c}^2$ and we set an upper limit on the coupling strengh, $g'$, constraining $Z'$ as a possible contributor to the anomalous magnetic dipole moment of muon., Comment: 10 pages, 8 figures

Published
2021
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23. Erratum to: Search for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector

Author

Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adye, T., Affolder, A. A., Afik, Y., Agatonovic-Jovin, T., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahlen, S. P., Ahmadov, F., Aielli, G., Akatsuka, S., Akerstedt, H., Åkesson, T. P. A., Akilli, E., Akimov, A. V., Alberghi, G. L., Albert, J., Albicocco, P., Alconada Verzini, M. J., Alderweireldt, S. C., Aleksa, M., Aleksandrov, I. N., Alexa, C., Alexander, G., Alexopoulos, T., Alhroob, M., Ali, B., Aliev, M., Alimonti, G., Alison, J., Alkire, S. P., Allbrooke, B. M. M., Allen, B. W., Allport, P. P., Aloisio, A., Alonso, A., Alonso, F., Alpigiani, C., Alshehri, A. A., Alstaty, M. I., Alvarez Gonzalez, B., Álvarez Piqueras, D., Alviggi, M. G., Amadio, B. T., Amaral Coutinho, Y., Amelung, C., Amidei, D., Amor Dos Santos, S. P., Amoroso, S., Amundsen, G., Anastopoulos, C., Ancu, L. S., Andari, N., Andeen, T., Anders, C. F., Anders, J. K., Anderson, K. J., Andreazza, A., Andrei, V., Angelidakis, S., Angelozzi, I., Angerami, A., Anisenkov, A. V., Anjos, N., Annovi, A., Antel, C., Antonelli, M., Antonov, A., Antrim, D. J., Anulli, F., Aoki, M., Aperio Bella, L., Arabidze, G., Arai, Y., Araque, J. P., Araujo Ferraz, V., Arce, A. T. H., Ardell, R. E., Arduh, F. A., Arguin, J-F., Argyropoulos, S., Arik, M., Armbruster, A. J., Armitage, L. J., Arnaez, O., Arnold, H., Arratia, M., Arslan, O., Artamonov, A., Artoni, G., Artz, S., Asai, S., Asbah, N., Ashkenazi, A., Asquith, L., Assamagan, K., Astalos, R., Atkinson, M., Atlay, N. B., Augsten, K., Avolio, G., Axen, B., Ayoub, M. K., Azuelos, G., Baas, A. E., Baca, M. J., Bachacou, H., Bachas, K., Backes, M., Bagnaia, P., Bahmani, M., Bahrasemani, H., Baines, J. T., Bajic, M., Baker, O. K., Bakker, P. J., Baldin, E. M., Balek, P., Balli, F., Balunas, W. K., Banas, E., Bandyopadhyay, A., Banerjee, Sw., Bannoura, A. A. E., Barak, L., Barberio, E. L., Barberis, D., Barbero, M., Barillari, T., Barisits, M.-S., Barkeloo, J. T., Barklow, T., Barlow, N., Barnes, S. L., Barnett, B. M., Barnett, R. M., Barnovska-Blenessy, Z., Baroncelli, A., Barone, G., Barr, A. J., Barranco Navarro, L., Barreiro, F., Barreiro Guimarães da Costa, J., Bartoldus, R., Barton, A. E., Bartos, P., Basalaev, A., Bassalat, A., Bates, R. L., Batista, S. J., Batley, J. R., Battaglia, M., Bauce, M., Bauer, F., Bawa, H. S., Beacham, J. B., Beattie, M. D., Beau, T., Beauchemin, P. H., Bechtle, P., Beck, H. P., Beck, H. C., Becker, K., Becker, M., Becot, C., Beddall, A. J., Beddall, A., Bednyakov, V. A., Bedognetti, M., Bee, C. P., Beermann, T. A., Begalli, M., Begel, M., Behr, J. K., Bell, A. S., Bella, G., Bellagamba, L., Bellerive, A., Bellomo, M., Belotskiy, K., Beltramello, O., Belyaev, N. L., Benary, O., Benchekroun, D., Bender, M., Benekos, N., Benhammou, Y., Benhar Noccioli, E., Benitez, J., Benjamin, D. P., Benoit, M., Bensinger, J. R., Bentvelsen, S., Beresford, L., Beretta, M., Berge, D., Bergeaas Kuutmann, E., Berger, N., Bergsten, L. J., Beringer, J., Berlendis, S., Bernard, N. R., Bernardi, G., Bernius, C., Bernlochner, F. U., Berry, T., Berta, P., Bertella, C., Bertoli, G., Bertram, I. A., Bertsche, C., Besjes, G. J., Bessidskaia Bylund, O., Bessner, M., Besson, N., Bethani, A., Bethke, S., Betti, A., Bevan, A. J., Beyer, J., Bianchi, R. M., Biebel, O., Biedermann, D., Bielski, R., Bierwagen, K., Biesuz, N. V., Biglietti, M., Billoud, T. R. V., Bilokon, H., Bindi, M., Bingul, A., Bini, C., Biondi, S., Bisanz, T., Bittrich, C., Bjergaard, D. M., Black, J. E., Black, K. M., Blair, R. E., Blazek, T., Bloch, I., Blocker, C., Blue, A., Blumenschein, U., Blunier, Dr., Bobbink, G. J., Bobrovnikov, V. S., Bocchetta, S. S., Bocci, A., Bock, C., Boehler, M., Boerner, D., Bogavac, D., Bogdanchikov, A. G., Bohm, C., Boisvert, V., Bokan, P., Bold, T., Boldyrev, A. S., Bolz, A. E., Bomben, M., Bona, M., Boonekamp, M., Borisov, A., Borissov, G., Bortfeldt, J., Bortoletto, D., Bortolotto, V., Boscherini, D., Bosman, M., Bossio Sola, J. D., Boudreau, J., Bouhova-Thacker, E. V., Boumediene, D., Bourdarios, C., Boutle, S. K., Boveia, A., Boyd, J., Boyko, I. R., Bozson, A. J., Bracinik, J., Brandt, A., Brandt, G., Brandt, O., Braren, F., Bratzler, U., Brau, B., Brau, J. E., Breaden Madden, W. D., Brendlinger, K., Brennan, A. J., Brenner, L., Brenner, R., Bressler, S., Briglin, D. L., Bristow, T. M., Britton, D., Britzger, D., Brochu, F. M., Brock, I., Brock, R., Brooijmans, G., Brooks, T., Brooks, W. K., Brosamer, J., Brost, E., Broughton, J. H., Bruckman de Renstrom, P. A., Bruncko, D., Bruni, A., Bruni, G., Bruni, L. S., Bruno, S., Brunt, B. H., Bruschi, M., Bruscino, N., Bryant, P., Bryngemark, L., Buanes, T., Buat, Q., Buchholz, P., Buckley, A. G., Budagov, I. A., Buehrer, F., Bugge, M. K., Bulekov, O., Bullock, D., Burch, T. J., Burdin, S., Burgard, C. D., Burger, A. M., Burghgrave, B., Burka, K., Burke, S., Burmeister, I., Burr, J. T. P., Büscher, D., Büscher, V., Bussey, P., Butler, J. M., Buttar, C. M., Butterworth, J. M., Butti, P., Buttinger, W., Buzatu, A., Buzykaev, A. R., Cabrera Urbán, S., Caforio, D., Cai, H., Cairo, V. M., Cakir, O., Calace, N., Calafiura, P., Calandri, A., Calderini, G., Calfayan, P., Callea, G., Caloba, L. P., Calvente Lopez, S., Calvet, D., Calvet, S., Calvet, T. P., Camacho Toro, R., Camarda, S., Camarri, P., Cameron, D., Caminal Armadans, R., Camincher, C., Campana, S., Campanelli, M., Camplani, A., Campoverde, A., Canale, V., Cano Bret, M., Cantero, J., Cao, T., Capeans Garrido, M. D. M., Caprini, I., Caprini, M., Capua, M., Carbone, R. M., Cardarelli, R., Cardillo, F., Carli, I., Carli, T., Carlino, G., Carlson, B. T., Carminati, L., Carney, R. M. D., Caron, S., Carquin, E., Carrá, S., Carrillo-Montoya, G. D., Casadei, D., Casado, M. P., Casha, A. F., Casolino, M., Casper, D. W., Castelijn, R., Castillo Gimenez, V., Castro, N. F., Catinaccio, A., Catmore, J. R., Cattai, A., Caudron, J., Cavaliere, V., Cavallaro, E., Cavalli, D., Cavalli-Sforza, M., Cavasinni, V., Celebi, E., Ceradini, F., Cerda Alberich, L., Cerqueira, A. S., Cerri, A., Cerrito, L., Cerutti, F., Cervelli, A., Cetin, S. A., Chafaq, A., Chakraborty, D., Chan, S. K., Chan, W. S., Chan, Y. L., Chang, P., Chapman, J. D., Charlton, D. G., Chau, C. C., Chavez Barajas, C. A., Che, S., Cheatham, S., Chegwidden, A., Chekanov, S., Chekulaev, S. V., Chelkov, G. A., Chelstowska, M. A., Chen, C., Chen, C., Chen, H., Chen, J., Chen, S., Chen, S., Chen, X., Chen, Y., Cheng, H. C., Cheng, H. J., Cheplakov, A., Cheremushkina, E., Cherkaoui El Moursli, R., Cheu, E., Cheung, K., Chevalier, L., Chiarella, V., Chiarelli, G., Chiodini, G., Chisholm, A. S., Chitan, A., Chiu, Y. H., Chizhov, M. V., Choi, K., Chomont, A. R., Chouridou, S., Chow, Y. S., Christodoulou, V., Chu, M. C., Chudoba, J., Chuinard, A. J., Chwastowski, J. J., Chytka, L., Ciftci, A. K., Cinca, D., Cindro, V., Cioară, I. A., Ciocio, A., Cirotto, F., Citron, Z. H., Citterio, M., Ciubancan, M., Clark, A., Clark, B. L., Clark, M. R., Clark, P. J., Clarke, R. N., Clement, C., Coadou, Y., Cobal, M., Coccaro, A., Cochran, J., Colasurdo, L., Cole, B., Colijn, A. P., Collot, J., Colombo, T., Conde Muiño, P., Coniavitis, E., Connell, S. H., Connelly, I. A., Constantinescu, S., Conti, G., Conventi, F., Cooke, M., Cooper-Sarkar, A. M., Cormier, F., Cormier, K. J. R., Corradi, M., Corriveau, F., Cortes-Gonzalez, A., Costa, G., Costa, M. J., Costanzo, D., Cottin, G., Cowan, G., Cox, B. E., Cranmer, K., Crawley, S. J., Creager, R. A., Cree, G., Crépé-Renaudin, S., Crescioli, F., Cribbs, W. A., Cristinziani, M., Croft, V., Crosetti, G., Cueto, A., Cuhadar Donszelmann, T., Cukierman, A. R., Cummings, J., Curatolo, M., Cúth, J., Czekierda, S., Czodrowski, P., D’amen, G., D’Auria, S., D’eramo, L., D’Onofrio, M., Da Cunha Sargedas De Sousa, M. J., Da Via, C., Dabrowski, W., Dado, T., Dai, T., Dale, O., Dallaire, F., Dallapiccola, C., Dam, M., Dandoy, J. R., Daneri, M. F., Dang, N. P., Daniells, A. C., Dann, N. S., Danninger, M., Dano Hoffmann, M., Dao, V., Darbo, G., Darmora, S., Dassoulas, J., Dattagupta, A., Daubney, T., Davey, W., David, C., Davidek, T., Davis, D. R., Davison, P., Dawe, E., Dawson, I., De, K., de Asmundis, R., De Benedetti, A., De Castro, S., De Cecco, S., De Groot, N., de Jong, P., De la Torre, H., De Lorenzi, F., De Maria, A., De Pedis, D., De Salvo, A., De Sanctis, U., De Santo, A., De Vasconcelos Corga, K., De Vivie De Regie, J. B., Debbe, R., Debenedetti, C., Dedovich, D. V., Dehghanian, N., Deigaard, I., Del Gaudio, M., Del Peso, J., Delgove, D., Deliot, F., Delitzsch, C. M., Dell’Acqua, A., Dell’Asta, L., Dell’Orso, M., Della Pietra, M., della Volpe, D., Delmastro, M., Delporte, C., Delsart, P. A., DeMarco, D. A., Demers, S., Demichev, M., Demilly, A., Denisov, S. P., Denysiuk, D., Derendarz, D., Derkaoui, J. E., Derue, F., Dervan, P., Desch, K., Deterre, C., Dette, K., Devesa, M. R., Deviveiros, P. O., Dewhurst, A., Dhaliwal, S., Di Bello, F. A., Di Ciaccio, A., Di Ciaccio, L., Di Clemente, W. K., Di Donato, C., Di Girolamo, A., Di Girolamo, B., Di Micco, B., Di Nardo, R., Di Petrillo, K. F., Di Simone, A., Di Sipio, R., Di Valentino, D., Diaconu, C., Diamond, M., Dias, F. A., Diaz, M. A., Dickinson, J., Diehl, E. B., Dietrich, J., Díez Cornell, S., Dimitrievska, A., Dingfelder, J., Dita, P., Dita, S., Dittus, F., Djama, F., Djobava, T., Djuvsland, J. I., do Vale, M. A. B., Dobos, D., Dobre, M., Dodsworth, D., Doglioni, C., Dolejsi, J., Dolezal, Z., Donadelli, M., Donati, S., Dondero, P., Donini, J., Dopke, J., Doria, A., Dova, M. T., Doyle, A. T., Drechsler, E., Dris, M., Du, Y., Duarte-Campderros, J., Dubinin, F., Dubreuil, A., Duchovni, E., Duckeck, G., Ducourthial, A., Ducu, O. A., Duda, D., Dudarev, A., Dudder, A. Chr., Duffield, E. M., Duflot, L., Dührssen, M., Dulsen, C., Dumancic, M., Dumitriu, A. E., Duncan, A. K., Dunford, M., Duperrin, A., Duran Yildiz, H., Düren, M., Durglishvili, A., Duschinger, D., Dutta, B., Duvnjak, D., Dyndal, M., Dziedzic, B. S., Eckardt, C., Ecker, K. M., Edgar, R. C., Eifert, T., Eigen, G., Einsweiler, K., Ekelof, T., El Kacimi, M., El Kosseifi, R., Ellajosyula, V., Ellert, M., Elles, S., Ellinghaus, F., Elliot, A. A., Ellis, N., Elmsheuser, J., Elsing, M., Emeliyanov, D., Enari, Y., Ennis, J. S., Epland, M. B., Erdmann, J., Ereditato, A., Ernst, M., Errede, S., Escalier, M., Escobar, C., Esposito, B., Estrada Pastor, O., Etienvre, A. I., Etzion, E., Evans, H., Ezhilov, A., Ezzi, M., Fabbri, F., Fabbri, L., Fabiani, V., Facini, G., Fakhrutdinov, R. M., Falciano, S., Falla, R. J., Faltova, J., Fang, Y., Fanti, M., Farbin, A., Farilla, A., Farina, C., Farina, E. M., Farooque, T., Farrell, S., Farrington, S. M., Farthouat, P., Fassi, F., Fassnacht, P., Fassouliotis, D., Faucci Giannelli, M., Favareto, A., Fawcett, W. J., Fayard, L., Fedin, O. L., Fedorko, W., Feigl, S., Feligioni, L., Feng, C., Feng, E. J., Fenton, M. J., Fenyuk, A. B., Feremenga, L., Fernandez Martinez, P., Ferrando, J., Ferrari, A., Ferrari, P., Ferrari, R., Ferreira de Lima, D. E., Ferrer, A., Ferrere, D., Ferretti, C., Fiedler, F., Filipčič, A., Filipuzzi, M., Filthaut, F., Fincke-Keeler, M., Finelli, K. D., Fiolhais, M. C. N., Fiorini, L., Fischer, A., Fischer, C., Fischer, J., Fisher, W. C., Flaschel, N., Fleck, I., Fleischmann, P., Fletcher, R. R. M., Flick, T., Flierl, B. M., Flores Castillo, L. R., Flowerdew, M. J., Forcolin, G. T., Formica, A., Förster, F. A., Forti, A., Foster, A. G., Fournier, D., Fox, H., Fracchia, S., Francavilla, P., Franchini, M., Franchino, S., Francis, D., Franconi, L., Franklin, M., Frate, M., Fraternali, M., Freeborn, D., Fressard-Batraneanu, S. M., Freund, B., Froidevaux, D., Frost, J. A., Fukunaga, C., Fusayasu, T., Fuster, J., Gabizon, O., Gabrielli, A., Gabrielli, A., Gach, G. P., Gadatsch, S., Gadomski, S., Gagliardi, G., Gagnon, L. G., Galea, C., Galhardo, B., Gallas, E. J., Gallop, B. J., Gallus, P., Galster, G., Gan, K. K., Ganguly, S., Gao, Y., Gao, Y. S., Garay Walls, F. M., García, C., García Navarro, J. E., García Pascual, J. A., Garcia-Sciveres, M., Gardner, R. W., Garelli, N., Garonne, V., Gascon Bravo, A., Gasnikova, K., Gatti, C., Gaudiello, A., Gaudio, G., Gavrilenko, I. L., Gay, C., Gaycken, G., Gazis, E. N., Gee, C. N. P., Geisen, J., Geisen, M., Geisler, M. P., Gellerstedt, K., Gemme, C., Genest, M. H., Geng, C., Gentile, S., Gentsos, C., George, S., Gerbaudo, D., Geßner, G., Ghasemi, S., Ghneimat, M., Giacobbe, B., Giagu, S., Giangiacomi, N., Giannetti, P., Gibson, S. M., Gignac, M., Gilchriese, M., Gillberg, D., Gilles, G., Gingrich, D. M., Giordani, M. P., Giorgi, F. M., Giraud, P. F., Giromini, P., Giugliarelli, G., Giugni, D., Giuli, F., Giuliani, C., Giulini, M., Gjelsten, B. K., Gkaitatzis, S., Gkialas, I., Gkougkousis, E. L., Gkountoumis, P., Gladilin, L. K., Glasman, C., Glatzer, J., Glaysher, P. C. F., Glazov, A., Goblirsch-Kolb, M., Godlewski, J., Goldfarb, S., Golling, T., Golubkov, D., Gomes, A., Gonçalo, R., Goncalves Gama, R., Goncalves Pinto Firmino Da Costa, J., Gonella, G., Gonella, L., Gongadze, A., Gonski, J. L., González de la Hoz, S., Gonzalez-Sevilla, S., Goossens, L., Gorbounov, P. A., Gordon, H. A., Gorelov, I., Gorini, B., Gorini, E., Gorišek, A., Goshaw, A. T., Gössling, C., Gostkin, M. I., Gottardo, C. A., Goudet, C. R., Goujdami, D., Goussiou, A. G., Govender, N., Gozani, E., Grabowska-Bold, I., Gradin, P. O. J., Gramling, J., Gramstad, E., Grancagnolo, S., Gratchev, V., Gravila, P. M., Gray, C., Gray, H. M., Greenwood, Z. D., Grefe, C., Gregersen, K., Gregor, I. M., Grenier, P., Grevtsov, K., Griffiths, J., Grillo, A. A., Grimm, K., Grinstein, S., Gris, Ph., Grivaz, J.-F., Groh, S., Gross, E., Grosse-Knetter, J., Grossi, G. C., Grout, Z. J., Grummer, A., Guan, L., Guan, W., Guenther, J., Guescini, F., Guest, D., Gueta, O., Gui, B., Guido, E., Guillemin, T., Guindon, S., Gul, U., Gumpert, C., Guo, J., Guo, W., Guo, Y., Gupta, R., Gurbuz, S., Gustavino, G., Gutelman, B. J., Gutierrez, P., Gutierrez Ortiz, N. G., Gutschow, C., Guyot, C., Guzik, M. P., Gwenlan, C., Gwilliam, C. B., Haas, A., Haber, C., Hadavand, H. K., Haddad, N., Hadef, A., Hageböck, S., Hagihara, M., Hakobyan, H., Haleem, M., Haley, J., Halladjian, G., Hallewell, G. D., Hamacher, K., Hamal, P., Hamano, K., Hamilton, A., Hamity, G. N., Hamnett, P. G., Han, L., Han, S., Hanagaki, K., Hanawa, K., Hance, M., Handl, D. M., Haney, B., Hanke, P., Hansen, J. B., Hansen, J. D., Hansen, M. C., Hansen, P. H., Hara, K., Hard, A. S., Harenberg, T., Hariri, F., Harkusha, S., Harrison, P. F., Hartmann, N. M., Hasegawa, Y., Hasib, A., Hassani, S., Haug, S., Hauser, R., Hauswald, L., Havener, L. B., Havranek, M., Hawkes, C. M., Hawkings, R. J., Hayakawa, D., Hayden, D., Hays, C. P., Hays, J. M., Hayward, H. S., Haywood, S. J., Head, S. J., Heck, T., Hedberg, V., Heelan, L., Heer, S., Heidegger, K. K., Heim, S., Heim, T., Heinemann, B., Heinrich, J. J., Heinrich, L., Heinz, C., Hejbal, J., Helary, L., Held, A., Hellman, S., Helsens, C., Henderson, R. C. W., Heng, Y., Henkelmann, S., Henriques Correia, A. M., Henrot-Versille, S., Herbert, G. H., Herde, H., Herget, V., Hernández Jiménez, Y., Herr, H., Herten, G., Hertenberger, R., Hervas, L., Herwig, T. C., Hesketh, G. G., Hessey, N. P., Hetherly, J. W., Higashino, S., Higón-Rodriguez, E., Hildebrand, K., Hill, E., Hill, J. C., Hiller, K. H., Hillier, S. J., Hils, M., Hinchliffe, I., Hirose, M., Hirschbuehl, D., Hiti, B., Hladik, O., Hlaluku, D. R., Hoad, X., Hobbs, J., Hod, N., Hodgkinson, M. C., Hodgson, P., Hoecker, A., Hoeferkamp, M. R., Hoenig, F., Hohn, D., Holmes, T. R., Holzbock, M., Homann, M., Honda, S., Honda, T., Hong, T. M., Hooberman, B. H., Hopkins, W. H., Horii, Y., Horton, A. J., Hostachy, J-Y., Hostiuc, A., Hou, S., Hoummada, A., Howarth, J., Hoya, J., Hrabovsky, M., Hrdinka, J., Hristova, I., Hrivnac, J., Hryn’ova, T., Hrynevich, A., Hsu, P. J., Hsu, S.-C., Hu, Q., Hu, S., Huang, Y., Hubacek, Z., Hubaut, F., Huegging, F., Huffman, T. B., Hughes, E. W., Huhtinen, M., Hunter, R. F. H., Huo, P., Huseynov, N., Huston, J., Huth, J., Hyneman, R., Iacobucci, G., Iakovidis, G., Ibragimov, I., Iconomidou-Fayard, L., Idrissi, Z., Iengo, P., Igonkina, O., Iizawa, T., Ikegami, Y., Ikeno, M., Ilchenko, Y., Iliadis, D., Ilic, N., Iltzsche, F., Introzzi, G., Ioannou, P., Iodice, M., Iordanidou, K., Ippolito, V., Isacson, M. F., Ishijima, N., Ishino, M., Ishitsuka, M., Issever, C., Istin, S., Ito, F., Iturbe Ponce, J. M., Iuppa, R., Iwasaki, H., Izen, J. M., Izzo, V., Jabbar, S., Jackson, P., Jacobs, R. M., Jain, V., Jakobi, K. B., Jakobs, K., Jakobsen, S., Jakoubek, T., Jamin, D. O., Jana, D. K., Jansky, R., Janssen, J., Janus, M., Janus, P. A., Jarlskog, G., Javadov, N., Javůrek, T., Javurkova, M., Jeanneau, F., Jeanty, L., Jejelava, J., Jelinskas, A., Jenni, P., Jeske, C., Jézéquel, S., Ji, H., Jia, J., Jiang, H., Jiang, Y., Jiang, Z., Jiggins, S., Jimenez Pena, J., Jin, S., Jinaru, A., Jinnouchi, O., Jivan, H., Johansson, P., Johns, K. A., Johnson, C. A., Johnson, W. J., Jon-And, K., Jones, R. W. L., Jones, S. D., Jones, S., Jones, T. J., Jongmanns, J., Jorge, P. M., Jovicevic, J., Ju, X., Juste Rozas, A., Köhler, M. K., Kaczmarska, A., Kado, M., Kagan, H., Kagan, M., Kahn, S. J., Kaji, T., Kajomovitz, E., Kalderon, C. W., Kaluza, A., Kama, S., Kamenshchikov, A., Kanaya, N., Kanjir, L., Kantserov, V. A., Kanzaki, J., Kaplan, B., Kaplan, L. S., Kar, D., Karakostas, K., Karastathis, N., Kareem, M. J., Karentzos, E., Karpov, S. N., Karpova, Z. M., Karthik, K., Kartvelishvili, V., Karyukhin, A. N., Kasahara, K., Kashif, L., Kass, R. D., Kastanas, A., Kataoka, Y., Kato, C., Katre, A., Katzy, J., Kawade, K., Kawagoe, K., Kawamoto, T., Kawamura, G., Kay, E. F., Kazanin, V. F., Keeler, R., Kehoe, R., Keller, J. S., Kellermann, E., Kempster, J. J., Kendrick, J., Keoshkerian, H., Kepka, O., Kerševan, B. P., Kersten, S., Keyes, R. A., Khader, M., Khalil-zada, F., Khanov, A., Kharlamov, A. G., Kharlamova, T., Khodinov, A., Khoo, T. 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M., Snyder, S., Sobie, R., Socher, F., Soffer, A., Søgaard, A., Soh, D. A., Sokhrannyi, G., Solans Sanchez, C. A., Solar, M., Soldatov, E. Yu., Soldevila, U., Solodkov, A. A., Soloshenko, A., Solovyanov, O. V., Solovyev, V., Sommer, P., Son, H., Sopczak, A., Sosa, D., Sotiropoulou, C. L., Sottocornola, S., Soualah, R., Soukharev, A. M., South, D., Sowden, B. C., Spagnolo, S., Spalla, M., Spangenberg, M., Spanò, F., Sperlich, D., Spettel, F., Spieker, T. M., Spighi, R., Spigo, G., Spiller, L. A., Spousta, M., St. Denis, R. D., Stabile, A., Stamen, R., Stamm, S., Stanecka, E., Stanek, R. W., Stanescu, C., Stanitzki, M. M., Stapf, B. S., Stapnes, S., Starchenko, E. A., Stark, G. H., Stark, J., Stark, S. H., Staroba, P., Starovoitov, P., Stärz, S., Staszewski, R., Stegler, M., Steinberg, P., Stelzer, B., Stelzer, H. J., Stelzer-Chilton, O., Stenzel, H., Stevenson, T. J., Stewart, G. A., Stockton, M. C., Stoebe, M., Stoicea, G., Stolte, P., Stonjek, S., Stradling, A. R., Straessner, A., Stramaglia, M. E., Strandberg, J., Strandberg, S., Strauss, M., Strizenec, P., Ströhmer, R., Strom, D. M., Stroynowski, R., Strubig, A., Stucci, S. A., Stugu, B., Styles, N. A., Su, D., Su, J., Suchek, S., Sugaya, Y., Suk, M., Sulin, V. V., Sultan, D. M. S., Sultansoy, S., Sumida, T., Sun, S., Sun, X., Suruliz, K., Suster, C. J. E., Sutton, M. R., Suzuki, S., Svatos, M., Swiatlowski, M., Swift, S. P., Sykora, I., Sykora, T., Ta, D., Tackmann, K., Taenzer, J., Taffard, A., Tafirout, R., Tahirovic, E., Taiblum, N., Takai, H., Takashima, R., Takasugi, E. H., Takeda, K., Takeshita, T., Takubo, Y., Talby, M., Talyshev, A. A., Tanaka, J., Tanaka, M., Tanaka, R., Tanaka, S., Tanioka, R., Tannenwald, B. B., Tapia Araya, S., Tapprogge, S., Tarem, S., Tartarelli, G. F., Tas, P., Tasevsky, M., Tashiro, T., Tassi, E., Tavares Delgado, A., Tayalati, Y., Taylor, A. C., Taylor, A. J., Taylor, G. N., Taylor, P. T. E., Taylor, W., Teixeira-Dias, P., Temple, D., Ten Kate, H., Teng, P. K., Teoh, J. J., Tepel, F., Terada, S., Terashi, K., Terron, J., Terzo, S., Testa, M., Teuscher, R. J., Thais, S. J., Theveneaux-Pelzer, T., Thiele, F., Thomas, J. P., Thomas-Wilsker, J., Thompson, P. D., Thompson, A. S., Thomsen, L. A., Thomson, E., Tian, Y., Tibbetts, M. J., Ticse Torres, R. E., Tikhomirov, V. O., Tikhonov, Yu. A., Timoshenko, S., Tipton, P., Tisserant, S., Todome, K., Todorova-Nova, S., Todt, S., Tojo, J., Tokár, S., Tokushuku, K., Tolley, E., Tomlinson, L., Tomoto, M., Tompkins, L., Toms, K., Tong, B., Tornambe, P., Torrence, E., Torres, H., Torró Pastor, E., Toth, J., Touchard, F., Tovey, D. R., Treado, C. J., Trefzger, T., Tresoldi, F., Tricoli, A., Trigger, I. M., Trincaz-Duvoid, S., Tripiana, M. F., Trischuk, W., Trocmé, B., Trofymov, A., Troncon, C., Trottier-McDonald, M., Trovatelli, M., Truong, L., Trzebinski, M., Trzupek, A., Tsang, K. W., Tseng, J. C-L., Tsiareshka, P. V., Tsirintanis, N., Tsiskaridze, S., Tsiskaridze, V., Tskhadadze, E. G., Tsukerman, I. I., Tsulaia, V., Tsuno, S., Tsybychev, D., Tu, Y., Tudorache, A., Tudorache, V., Tulbure, T. T., Tuna, A. N., Turchikhin, S., Turgeman, D., Turk Cakir, I., Turra, R., Tuts, P. M., Ucchielli, G., Ueda, I., Ughetto, M., Ukegawa, F., Unal, G., Undrus, A., Unel, G., Ungaro, F. C., Unno, Y., Uno, K., Unverdorben, C., Urban, J., Urquijo, P., Urrejola, P., Usai, G., Usui, J., Vacavant, L., Vacek, V., Vachon, B., Vadla, K. O. H., Vaidya, A., Valderanis, C., Valdes Santurio, E., Valente, M., Valentinetti, S., Valero, A., Valéry, L., Valkar, S., Vallier, A., Valls Ferrer, J. A., Van Den Wollenberg, W., van der Graaf, H., van Gemmeren, P., Van Nieuwkoop, J., van Vulpen, I., van Woerden, M. C., Vanadia, M., Vandelli, W., Vaniachine, A., Vankov, P., Vardanyan, G., Vari, R., Varnes, E. W., Varni, C., Varol, T., Varouchas, D., Vartapetian, A., Varvell, K. E., Vasquez, J. G., Vasquez, G. A., Vazeille, F., Vazquez Furelos, D., Vazquez Schroeder, T., Veatch, J., Veeraraghavan, V., Veloce, L. M., Veloso, F., Veneziano, S., Ventura, A., Venturi, M., Venturi, N., Venturini, A., Vercesi, V., Verducci, M., Verkerke, W., Vermeulen, A. T., Vermeulen, J. C., Vetterli, M. C., Viaux Maira, N., Viazlo, O., Vichou, I., Vickey, T., Vickey Boeriu, O. E., Viehhauser, G. H. A., Viel, S., Vigani, L., Villa, M., Villaplana Perez, M., Vilucchi, E., Vincter, M. G., Vinogradov, V. B., Vishwakarma, A., Vittori, C., Vivarelli, I., Vlachos, S., Vogel, M., Vokac, P., Volpi, G., von der Schmitt, H., von Toerne, E., Vorobel, V., Vorobev, K., Vos, M., Voss, R., Vossebeld, J. H., Vranjes, N., Vranjes Milosavljevic, M., Vrba, V., Vreeswijk, M., Vuillermet, R., Vukotic, I., Wagner, P., Wagner, W., Wagner-Kuhr, J., Wahlberg, H., Wahrmund, S., Wakamiya, K., Walder, J., Walker, R., Walkowiak, W., Wallangen, V., Wang, C., Wang, C., Wang, F., Wang, H., Wang, H., Wang, J., Wang, J., Wang, Q., Wang, R.-J., Wang, R., Wang, S. M., Wang, T., Wang, W., Wang, W., Wang, Z., Wanotayaroj, C., Warburton, A., Ward, C. P., Wardrope, D. R., Washbrook, A., Watkins, P. M., Watson, A. T., Watson, M. F., Watts, G., Watts, S., Waugh, B. M., Webb, A. F., Webb, S., Weber, M. S., Weber, S. M., Weber, S. W., Weber, S. A., Webster, J. S., Weidberg, A. R., Weinert, B., Weingarten, J., Weirich, M., Weiser, C., Weits, H., Wells, P. S., Wenaus, T., Wengler, T., Wenig, S., Wermes, N., Werner, M. D., Werner, P., Wessels, M., Weston, T. D., Whalen, K., Whallon, N. L., Wharton, A. M., White, A. S., White, A., White, M. J., White, R., Whiteson, D., Whitmore, B. W., Wickens, F. J., Wiedenmann, W., Wielers, M., Wiglesworth, C., Wiik-Fuchs, L. A. M., Wildauer, A., Wilk, F., Wilkens, H. G., Williams, H. H., Williams, S., Willis, C., Willocq, S., Wilson, J. A., Wingerter-Seez, I., Winkels, E., Winklmeier, F., Winston, O. J., Winter, B. T., Wittgen, M., Wobisch, M., Wolf, A., Wolf, T. M. H., Wolff, R., Wolter, M. W., Wolters, H., Wong, V. W. S., Woods, N. L., Worm, S. D., Wosiek, B. K., Wotschack, J., Wozniak, K. W., Wu, M., Wu, S. L., Wu, X., Wu, Y., Wyatt, T. R., Wynne, B. M., Xella, S., Xi, Z., Xia, L., Xu, D., Xu, L., Xu, T., Xu, W., Yabsley, B., Yacoob, S., Yamaguchi, D., Yamaguchi, Y., Yamamoto, A., Yamamoto, S., Yamanaka, T., Yamane, F., Yamatani, M., Yamazaki, T., Yamazaki, Y., Yan, Z., Yang, H., Yang, H., Yang, Y., Yang, Z., Yao, W-M., Yap, Y. C., Yasu, Y., Yatsenko, E., Yau Wong, K. H., Ye, J., Ye, S., Yeletskikh, I., Yigitbasi, E., Yildirim, E., Yorita, K., Yoshihara, K., Young, C., Young, C. J. S., Yu, J., Yu, J., Yuen, S. P. Y., Yusuff, I., Zabinski, B., Zacharis, G., Zaidan, R., Zaitsev, A. M., Zakharchuk, N., Zalieckas, J., Zaman, A., Zambito, S., Zanzi, D., Zeitnitz, C., Zemaityte, G., Zemla, A., Zeng, J. C., Zeng, Q., Zenin, O., Ženiš, T., Zerwas, D., Zhang, D., Zhang, D., Zhang, F., Zhang, G., Zhang, H., Zhang, J., Zhang, L., Zhang, L., Zhang, M., Zhang, P., Zhang, R., Zhang, R., Zhang, X., Zhang, Y., Zhang, Z., Zhao, X., Zhao, Y., Zhao, Z., Zhemchugov, A., Zhou, B., Zhou, C., Zhou, L., Zhou, M., Zhou, M., Zhou, N., Zhou, Y., Zhu, C. G., Zhu, H., Zhu, J., Zhu, Y., Zhuang, X., Zhukov, K., Zibell, A., Zieminska, D., Zimine, N. I., Zimmermann, C., Zimmermann, S., Zinonos, Z., Zinser, M., Ziolkowski, M., Živković, L., Zobernig, G., Zoccoli, A., Zou, R., zur Nedden, M., and Zwalinski, L.

Published
2023
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24. Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle

Author

Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Belous, K., Bennett, J., Bernlochner, F., Bessner, M., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Bilokin, S., Biswal, J., Bloomfield, T., Bobrov, A., Bodrov, D., Bondar, A., Bonvicini, G., Bozek, A., Bra\v, M., Branchini, P., Braun, N., Breibeck, F., Browder, T. E., Budano, A., Campajola, M., Cao, L., Caria, G., \v, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Chen, Y. -T., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Das, S., Dash, N., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Dole\v, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Ecker, P., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Gong, G., Graziani, E., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Gu, T., Guan, Y., Gudkova, K., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Halder, S., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., Hazra, S., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kody\v, P., Koga, Y., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kri\v, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasni\v, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Laurenza, M., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pes\', L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribe\v, E., Ritter, M., R\", M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schmolz, P., Schneider, O., Schnell, G., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Sharma, C., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stani\v, S., Stari\v, M., Steder, M., Stottler, Z. S., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Tiwary, R., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, D., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Werbycka, O., Widmann, E., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.

Subjects
High Energy Physics - Experiment
Abstract

We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$ states of bottomonium at Belle. The $P$-wave states are reconstructed in transitions to the $\Upsilon(1S)$ with the emission of an $\omega$ meson. The transitions of the $n=2$ triplet states provide a unique laboratory in which to study nonrelativistic quantum chromodynamics, as the kinematic threshold for production of an $\omega$ and $\Upsilon(1S)$ lies between the $J=0$ and $J=1$ states. A search for the $\chi_{bJ}(3P)$ states is also reported.

Published
2021

25. Measurement of branching fractions and search for $CP$ violation in $D^{0}\to\pi^{+}\pi^{-}\eta$, $D^{0}\to K^{+}K^{-}\eta$, and $D^{0}\to\phi\eta$ at Belle

Author

Belle Collaboration, Li, L. K., Schwartz, A. J., Kinoshita, K., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Bennett, J., Bessner, M., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bra\v, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., \v, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Chen, Y. Q., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dole\v, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Giri, A., Goldenzweig, P., Golob, B., Graziani, E., Gu, T., Guan, Y., Hadjivasiliou, C., Halder, S., Hayasaka, K., Hou, W. -S., Inami, K., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, K. K., Kang, K. H., Karyan, G., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kody\v, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kri\v, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Laurenza, M., Lee, S. C., Li, C. H., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mori, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Passeri, A., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stari\v, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, K., Uno, S., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Waheed, E., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanuki, S., Won, E., Yabsley, B. D., Yan, W. B., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment
Abstract

We measure the branching fractions and $CP$ asymmetries for the singly Cabibbo-suppressed decays $D^{0}\to\pi^{+}\pi^{-}\eta$, $D^{0}\to K^{+}K^{-}\eta$, and $D^{0}\to\phi\eta$, using 980 fb$^{-1}$ of data from the Belle experiment at the KEKB $e^+e^-$ collider. We obtain \begin{eqnarray} \mathcal{B}(D^{0}\to\pi^{+}\pi^{-}\eta) & = & [1.22\pm 0.02\,({\rm stat})\pm 0.02\,({\rm syst})\pm 0.03\,(\mathcal{B}_{\rm ref})]\times 10^{-3}\,, \nonumber \\ \mathcal{B}(D^{0}\to K^{+}K^{-}\eta) & = & [1.80\,^{+0.07}_{-0.06}\,({\rm stat})\pm 0.04\,({\rm syst})\pm 0.05\,(\mathcal{B}_{\rm ref})]\times 10^{-4}\,, \nonumber \\ \mathcal{B}(D^{0}\to\phi\eta) & = & [1.84\pm 0.09\,({\rm stat})\pm 0.06\,({\rm syst})\pm 0.05\,(\mathcal{B}_{\rm ref})]\times 10^{-4}\,, \nonumber \end{eqnarray} where the third uncertainty ($\mathcal{B}_{\rm ref}$) is from the uncertainty in the branching fraction of the reference mode $D^{0}\to K^{-}\pi^{+}\eta$. The color-suppressed decay $D^{0}\to\phi\eta$ is observed for the first time, with very high significance. The results for the $CP$ asymmetries are \begin{eqnarray} A_{CP}(D^{0}\to\pi^{+}\pi^{-}\eta) & = & [0.9\pm 1.2\,({\rm stat})\pm 0.5\,({\rm syst})]\%\,, \nonumber \\ A_{CP}(D^{0}\to K^{+}K^{-}\eta) & = & [-1.4\pm 3.3\,({\rm stat})\pm 1.1\,({\rm syst})]\%\,, \nonumber \\ A_{CP}(D^{0}\to\phi\eta)&= & [-1.9\pm 4.4\,({\rm stat})\pm 0.6\,({\rm syst})]\%\,. \nonumber \end{eqnarray} The results for $D^{0}\to\pi^{+}\pi^{-}\eta$ are a significant improvement over previous results. The branching fraction and $A_{CP}$ results for $D^{0}\to K^{+}K^{-}\eta$, and the $A_{CP}$ result for $D^{0}\to\phi\eta$, are the first such measurements. No evidence for $CP$ violation is found in any of these decays., Comment: 21 pages, 7 figures

Published
2021
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26. Evidence for the decay $\Omega_{c}^{0} \to \pi^+\Omega(2012)^- \to \pi^+ (\bar{K}\Xi)^{-}$

Author

Belle Collaboration, Li, Y., Tang, S. S., Jia, S., Shen, C. P., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Bessner, M., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., De Pietro, G., Di Capua, F., Doležal, Z., Dong, T. V., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Giri, A., Goldenzweig, P., Golob, B., Graziani, E., Gu, T., Gudkova, K., Hadjivasiliou, C., Halder, S., Hayasaka, K., Hayashii, H., Hou, W. -S., Inami, K., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jin, Y., Joo, K. K., Kang, K. H., Karyan, G., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Laurenza, M., Lee, S. C., Li, C. H., Li, L. K., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Passeri, A., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Shapkin, M., Sharma, C., Shebalin, V., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, K., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanuki, S., Werbycka, O., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Using a data sample of 980~fb$^{-1}$ collected with the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider, we present evidence for the $\Omega(2012)^-$ in the resonant substructure of $\Omega_{c}^{0} \to \pi^+ (\bar{K}\Xi)^{-}$ ($(\bar{K}\Xi)^{-}$ = $K^-\Xi^0$ + $\bar{K}^0 \Xi^-$) decays. The significance of the $\Omega(2012)^-$ signal is 4.2$\sigma$ after considering the systematic uncertainties. The ratio of the branching fraction of $\Omega_{c}^{0} \to \pi^{+} \Omega(2012)^- \to \pi^+ (\bar{K}\Xi)^{-}$ relative to that of $\Omega_{c}^{0} \to \pi^{+} \Omega^-$ is calculated to be 0.220 $\pm$ 0.059(stat.) $\pm$ 0.035(syst.). The individual ratios of the branching fractions of the two isospin modes are also determined, and found to be ${\cal B}(\Omega_{c}^0 \to \pi^+ \Omega(2012)^-) \times {\cal B}(\Omega(2012)^- \to K^-\Xi^0)/{\cal B}(\Omega_{c}^0 \to \pi^+ K^- \Xi^0)$ = (9.6 $\pm$ 3.2(stat.) $\pm$ 1.8(syst.))\% and ${\cal B}(\Omega_{c}^0 \to \pi^+ \Omega(2012)^-) \times {\cal B}(\Omega(2012)^- \to \bar{K}^0 \Xi^-)/{\cal B}(\Omega_{c}^0 \to \pi^+ \bar{K}^0 \Xi^-)$ = (5.5 $\pm$ 2.8(stat.) $\pm$ 0.7(syst.))\%., Comment: 9 pages, 4 figures

Published
2021
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29. Glasslike phonon excitation caused by ferroelectric structural instability

Author

Ishii, Y., Yamamoto, A., Sato, N., Nambu, Y., Ohira-Kawamura, S., Murai, N., Mori, T., and Mori, S.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter
Abstract

Quest for new states of matter near an ordered phase is a promising route for making modern physics forward. By probing thermal properties of a ferroelectric (FE) crystal Ba1-xSrxAl2O4, we have clarified that low-energy excitation of acoustic phonons is remarkably enhanced with critical behavior at the border of the FE phase. The phonon spectrum is significantly damped toward the FE phase boundary and transforms into glasslike phonon excitation which is reminiscent of a boson peak. This system thus links long-standing issues of amorphous solids and structural instability in crystals to pave the way to controlling lattice fluctuation as a new tuning parameter., Comment: 6 pages, 4 figures

Published
2021

30. Measurements of the branching fractions of the semileptonic decays $\Xi_{c}^{0} \to \Xi^{-} \ell^{+} \nu_{\ell}$ and the asymmetry parameter of $\Xi_{c}^{0} \to \Xi^{-} \pi^{+}$

Author

Belle Collaboration, Li, Y. B., Shen, C. P., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Behera, P., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Grzymkowska, O., Gudkova, K., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Villanueva, M. Hernandez, Hsu, C. -L., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kato, Y., Kichimi, H., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Li, C. H., Li, L. K., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matvienko, D., McNeil, J. T., Metzner, F., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Shapkin, M., Sharma, C., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Uno, K., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Vossen, A., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., Won, E., Xu, X., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

Using data samples of 89.5 and 711 fb$^{-1}$ recorded at energies of $\sqrt{s}=10.52$ and $10.58$ GeV, respectively, with the Belle detector at the KEKB $e^+e^-$ collider, we report measurements of branching fractions of semileptonic decays $\Xi_{c}^{0} \to \Xi^{-} \ell^{+} \nu_{\ell}$ ($\ell=e$ or $\mu$) and the $CP$-asymmetry parameter of $\Xi_{c}^{0} \to \Xi^{-} \pi^{+}$ decay. The branching fractions are measured to be ${\cal B}(\Xi_{c}^{0} \to \Xi^{-} e^{+} \nu_{e})=(1.31 \pm 0.04 \pm 0.07 \pm 0.38)\%$ and ${\cal B}(\Xi_{c}^{0} \to \Xi^{-} \mu^{+} \nu_{\mu})=(1.27 \pm 0.06 \pm 0.10 \pm 0.37)\%$, and the decay parameter $\alpha_{\Xi\pi}$ is measured to be $0.63 \pm 0.03 \pm 0.01$ with much improved precision compared to the current world average. The corresponding ratio ${\cal B}(\Xi_{c}^{0} \to \Xi^{-} e^{+} \nu_{e})/{\cal B}(\Xi_{c}^{0} \to \Xi^{-} \mu^{+} \nu_{\mu})$ is $1.03 \pm 0.05\pm 0.07$, which is consistent with the expectation of lepton flavor universality. The first measured asymmetry parameter ${\cal A}_{CP} = (\alpha_{\Xi^{-}\pi^{+}} + \alpha_{\bar{\Xi}^{+}\pi^{-}})/(\alpha_{\Xi^{-}\pi^{+}} - \alpha_{\bar{\Xi}^{+}\pi^{-}}) = 0.024 \pm 0.052 \pm 0.014$ is found to be consistent with zero. The first and the second uncertainties above are statistical and systematic, respectively, while the third ones arise due to the uncertainty of the $\Xi_{c}^{0} \to \Xi^{-} \pi^+$ branching fraction., Comment: 8 pages, 2 figures, 1 table, accepted for publication as a Letter in Physical Review Letters

Published
2021
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31. Measurements of the branching fractions of $\Lambda_c^+ \to p \eta$ and $\Lambda_c^+ \to p \pi^0$ decays at Belle

Author

Belle Collaboration, Li, S. X., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Bennett, J., Bernlochner, F., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bracko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Gudkova, K., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kato, Y., Kawasaki, T., Kichimi, H., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Mizuk, R., Mohanty, S., Mori, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Niiyama, M., Nisar, N. K., Nishida, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shebalin, V., Shiu, J. -G., Shwartz, B., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Uno, K., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanuki, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We report measurements of the branching fractions of singly Cabibbo-suppressed decays $\Lambda_c^+ \to p \eta$ and $\Lambda_c^+ \to p \pi^0$ using the full Belle data sample corresponding to an integrated luminosity of 980.6 $\rm fb^{-1}$. The data were collected by the Belle detector at the KEKB $e^{+}$$e^{-}$ asymmetric-energy collider. A clear $\Lambda_c^+$ signal is seen in the invariant mass distribution of $p \eta$. The signal yield of the $\Lambda_c^+ \to p \eta$ process is $7734 \pm 263$; from this, we measure the ratio of branching fractions ${\cal B}(\Lambda_c^+ \to p \eta)/{\cal B}(\Lambda_c^+ \to p K^- \pi^+) = (2.258 \pm 0. 077(\rm stat. ) \pm 0.136(\rm syst. ))\times 10^{-2}$, from which we infer the branching fraction ${\cal B}(\Lambda_c^+ \to p \eta) = (1.42 \pm 0.05(\rm stat.) \pm 0.11(\rm syst.)) \times 10^{-3}$. In addition, no significant signal for $\Lambda_c^+ \to p \pi^0$ is found so an upper limit on the branching fraction of ${\cal B}(\Lambda_c^+ \to p \pi^0)<8.0 \times 10^{-5}$ at 90\% credibility level is set, more than three times better than the best current upper limit., Comment: 9 pages, 7 figures, accepted for publication as a Regular Article in Physical Review D

Published
2021
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32. Measurements of Partial Branching Fractions of Inclusive $B \to X_u \, \ell^+\, \nu_{\ell}$ Decays with Hadronic Tagging

Author

Belle Collaboration, Cao, L., Sutcliffe, W., Van Tonder, R., Bernlochner, F. U., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bauer, M., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Ferlewicz, D., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hadjivasiliou, C., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kotchetkov, D., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Lewis, P., Li, C. H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, C. W., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Vossen, A., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We present measurements of partial branching fractions of inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays using the full Belle data set of 711 fb$^{-1}$ of integrated luminosity at the $\Upsilon(4S)$ resonance and for $\ell = e, \mu$. Inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays are CKM suppressed and measurements are complicated by the large background from CKM-favored $B \to X_c \, \ell^+\, \nu_{\ell}$ transitions, which have a similar signature. Using machine learning techniques, we reduce this and other backgrounds effectively, whilst retaining access to a large fraction of the $B \to X_u \, \ell^+\, \nu_{\ell}$ phase space and high signal efficiency. We measure partial branching fractions in three phase-space regions covering about $31\%$ to $86\%$ of the accessible $B \to X_u \, \ell^+\, \nu_{\ell}$ phase space. The most inclusive measurement corresponds to the phase space with lepton energies of $E_\ell^B > 1 $ GeV, and we obtain $\Delta \mathcal{B}(B \to X_u \ell^+ \, \nu_\ell) = \left( 1.59 \pm 0.07 \pm 0.16 \right) \times 10^{-3}$ from a two-dimensional fit of the hadronic mass spectrum and the four-momentum-transfer squared distribution, with the uncertainties denoting the statistical and systematic error. We find $\left| V_{ub} \right| = \left( 4.10 \pm 0.09 \pm 0.22 \pm 0.15 \right) \times 10^{-3}$ from an average of four calculations for the partial decay rate with the third uncertainty denoting the average theory error. This value is higher but compatible with the determination from exclusive semileptonic decays within 1.3 standard deviations. In addition, we report charmless inclusive partial branching fractions separately for $B^+$ and $B^0$ mesons as well as for electron and muon final states. No isospin breaking or lepton flavor universality violating effects are observed., Comment: 34 pages, 23 figures, 7 tables. Accepted by Phys. Rev. D

Published
2021
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33. Effect of the Factor XIa Inhibitor Asundexian According to Baseline Infarct Pattern and on MRI Covert Infarct Outcomes

Author

Smith, Eric E., Shoamanesh, Ashkan, Xu, Lizhen, Heenan, Laura, Saad, Feryal, Colorado, Pablo, Chen, Chih-Hao, Lemmens, Robin, De Marchis, Gian Marco, Caso, Valeria, Masjuan, Jaime, Hirano, Teruyuki, Milanov, Ivan, Campbell, Bruce C.V., Mas, Jean-Louis, Connolly, Stuart J., Mundl, Hardi, Hart, Robert G., Bailey, P., Kleinig, T., Cordato, D., Choi, P., Garcia-Esperon, C., Chew, A., Cloud, G., Stanislaus, V., Krause, M., Priglinger, M., Grimley, R., Ghia, D., Sahathevan, R., Brown, H., Kwan, C., Devlin, M., Greisenegger, S., Bonelli-Nauer, S., Rath, J., Langer, A., Marko, M., Ferrari, J., Bernegger, A., Baumgartinger, M., Vigl, M., Krebs, S., Lang, W., Knoflach, M., Dejakum, B., Kiechl, S., Töll, T., Domig, L., Mutzenbach, J.S., Ganser, B., Hecker, C., Rösler, C., Bubel, N., Pikija, S., Zellner, T., Leitner, U., Berger, O., Surböck, B., Beirer, S., Staykov, D., Schrammel, D., Halilovic, A., Frattner, M., Barmherzigen, D., Lampl, C., Höfer, C., Nagl, S., Bocksrucker, C., Demeestere, J., Desfontaines, P., Ciobanu, C., De Pauw, A., Terwecoren, A., Hasenbroekx, M.C., Clement, F., De Klippel, N., Soors, P., Hermans, S., De Raedt, S., Vandervorst, F., Seynaeve, L., Fockaert, N., Smet, S., Rutgers, M., Del Gaudio, N., Paindeville, P., Staikov, I., Simeonova, A., Stoyanova, I., Cholakova, M., Mihnev, N., Petrova, T., Koralova, A., Dimov, D., Kuzev, Y., Danovska, M., Marinova, D., Marinova-Trifonova, D., Ovcharova, E., Mladenovski, I., Yanakieva, M., Stoev, P., Dimitrova, M., Todorova-Georgieva, S., Haralanov, L., Milkov, B., Solakov, D., Petkova, N., Ignatova-Valkova, V., Karabinov, V., Marinova, V., Miteva, Y., Andonova, V., Kasabova, D., Kostadinova, E., Shopova-Vrabcheva, Y., Gatev, D., Semova, D., Halil, E., Kaprelyan, A., Ivanov, B., Panov, G., Grudkova, M., Syuleyman, N., Kalpachki, R., Alexiev, F., Ivanova, I., Kancheva, K., Sakelarova, T., Maslarov, D., Drenska, D., Georgiev, V., Petrova, K., Petrova, N., Ivanova, I., Semerdjieva, N., Zhelyazkov, P., Spasova-Markova, S., Dong, X., Wang, D., Wang, S., Huang, W., Zhao, H., Wang, C., Jie, L., Xinyang, Y., Ping, Z., Dong, Q., Wang, Y., Fuling, Y., Yue, W., Liu, R., Yang, Y., Stetkarova, I., Mikulenka, P., Vasko, P., Peisker, T., Bar, M., Roubec, M., Mikulik, R., Cabukova, M., Vinklarek, J., Kovar, M., Pansky, M., Mencl, P., Skoda, O., Carek, M., Pernicka, M., Skodova, M., Geier, P., Cepkova, J., Drlik, J., Prax, T., Herzig, R., Krajickova, D., Vitkova, E., Haluskova, S., Vaclavik, D., Martinkova, J., Blejcharova, K., Tkacova, M., Pavlik, O., Nevšímalová, M., Rosol, J., Nevsimalova, M., Hruby, R., Iversen, H., Andersen, A.V., Rahimi, D., Christensen, H., Grundtvig, J., Hjort, N., Andersen, G., Sandal, B., Stilund, M., Modrau, B., Strade, A., Porobic, M., Andersen, S.D., Kruuse, C., Ölmestig, J., Kolmos, M., Parvez, A., Christensen, T., Stokholm, J., Jensen, H.B., Putaala, J., Strbian, D., Sibolt, G., Tiainen, M., Martinez-Majander, N., Curtze, S., Raty, S., Kraemer, Y., Roine, R., Aivo, J., Ruuskanen, J., Ylikotila, P., Roine, S., Hallikainen, M., Jakala, P., Kurl, S., Julkunen, V., Sibon, I., Olindo, S., Richard, S., Larrue, V., Gollion, C., Catala, H., Henon, H., Lucie, D.S., Nelly, D., Calvet, D., Malbranque, A., Mazé, B., Barbieux-Ghitu, C., Rosso, C., Samson, Y., Vannier, S., Moulin, T., Bonnet, L., Reiner, P., Buffon, F., Denier, C., Amri, K., Legris, N., Chassin, O., Selli, N., Mariana, S., Berrouschot, J., Stoll, A., Klunk, D., Keilitz, J., Neustadt, M., Zerrenner, S., Veltkamp, R., Hajjar, K., Heeger, A., Winezki, E., Apel, L., Pompsch, M., Mueller, P., Rappard, P., Auer, R., Ringleb, P.A., Berberich, A., Heyse, M., Mundiyanapurath, S., Reiff, T., Poli, S., Gomez-Exposito, A., Mengel, A., Tünnerhoff, J., Adeyemi, K., Poli, K., Kusch, V., Pelz, J., Michalski, D., Wartenberg, K., Althaus, K., Tavares, F., Mueller, S., Soda, H., Rascher, A., Hiermann, E., Weinhardt, R., Weissenborn, K., Leotescu, A., Grosse, G., Worthmann, H., Ernst, J., Gabriel, M., Schuppner, R., Schäfer, J.H., Charisse, D., Gruber, K., Kurka, N., Reitz, S.C., Pfeilschifter, W., Lee, J.I., Gliem, M., Moll, M., Steiner, T., Segura, L., Szegedi, N., Barandi, D., Uhrinakova, L., Czencz, M., Pasztor, M., Gyuker, N., Bartha, N.E., May, Z., Simony, Z., Szasz, G., Kakuk, I., Pető, N., Panczel, G.F., Olah, A., Racz, O., Balla, T., Horvath, B., Tuba, K., Czinderi, V., Klivenyi, P., Annus, A., Hertelendy, P., Szapary, L., Bosnyak, E., Kalmar, P., Karadi, Z., Cziba, L., Olah, L., Berki, A., Hudak, L., Kozák, M., Babel, S., Nemeth, L., Molnár, B., Simon, Z., Roveri, L., Cerri, F., Giacalone, G., Zini, A., Mauro, G., Asioli, G.M., Forlivesi, S., Arnone, G., Fiaccadori, A., Maria Fontana Francesca, E., Allegra, G., Mosconi, M.G., Longoni, M., Terlizzi, R., Paolucci, M., Tassi, R., Franci, B., Lucani, B., Domenichelli, C., Paoletti, D., Acampa, M., Zedde, M.L., Pezzella, F.R., Mangiardi, M., Galizia, P., Anticoli, S., Scalise, S., Lattanzi, S., Norata, D., Cannuccia, M., Cavallini, A., Federica, F., Denaro, M.F., Tosi, P., Sonoda, K., Kawajiri, M., Kusano, Y., Haraguchi, K., Kawano, H., Terasaki, T., Kaneko, C., Murase, S., Kumagai, M., Murai, N., Miyazaki, Y., Mori, T., Hatano, T., Kawanishi, M., Ochiai, J., Ishihara, S., Uehara, T., Yasaka, M., Nakagawa, H., Makino, M., Yonehara, T., Fukushima, Y., Hirotsune, N., Sakai, N., Yamasaki, M., Coutinho, J., Wouters, A., den Hertog, H., Zwartbol, R., Beumer, D., Kerklaan, J., Hilkens, P., Schreuder, T., Propper, D., Slowik, A., Wlodarczyk, E., Wrona, P., Pulyk, R., Lasek-Bal, A., Kosarz-Lanczek, K., Puz, P., Bilik, M., Magielska, A., Zamiela – Żółciak, A., Ochocinska, L., Bahdasaryan, S., Stępień, A., Dębiec, A., Joanna, K., Pawel, M., Jacek, S., Daniel, P., Marta, S., Rejdak, K., Wojczal, J., Luchowski, P., Fryze, W., Wisniewska, A., Krzyzanowska, M., Skowron, P., Wolosz, A., Galan, A., Grzymala, K., Krajewska, M., Nowak, R., Kłos, M., Cruz, V., Castro, P., Ferro, J., Canhão, P., Gouveia, R., Inácio, N., Rodrigues, M., Rachão, A., Ionel, C., Pereira, L., Viana-Baptista, M., Machado, C., Fernandes, C., Sargento, J., Inácio, N., Timchenko, L., Mironova, J., Zhadan, O., Torgashova, A., Bazhenova, O., Barashenkova, M., Kireeva, M., Romadina, N., Stepanova, I., Lenskaya, L., Lukinykh, L., Vorontsova, T., Agafina, A., Fedorova, A., Yashina, A., Alasheev, A., Smolkin, A., Prazdnichkova, E., Lutskovich, O., Gonysheva, Y., Mordvintseva, E., Nechaev, A., Martynova, E., Fedoraeva, N., Vishnyakova, T., Popov, D., Merzliakova, A., Margarita, K., Rechkalova, L., Ilyina, A., Kurenkova, N., Barbarash, O., Bazdyrev, E., Zvereva, T., Hromova, A., Morkvenas, A., Postnikova, E., Kovalenko, G., Taran, I., Pavlov, L., Ott, M., Chernitsova, N., Vodopyanova, N., Drozdova, E., Korebo, E., Lobanova, M., Lazareva, N., Snegova, N., Nikolaeva, O., Kolesnikov, Y., Kosheleva, Y., Krastev, G., Tomasova, K., Danis, M., Mako, M., Jankovicova, Z., Stevkova, Z., Kovacik, M., Kubikova, T., Jarosova, A., Serdahely, V., Cilingova, I., Pribulova, I., Sedlak, J., Slebodova, K., Paldaufova, M., Risnovsky, R., Berndtova, B., Urbanova, I., Junas, R., Karapetian, S., Gurcik, L., Vantrobova, A., Verbovsky, F., Vanacka, K., Ferenc, M., Galik, P., Bucakova, S., Ferencova, M., Kubalova, P., Boksanska, Z., Zacharova, E., Mahundi, E., Judita, H., Bachnak, M., Turcani, P., Kvasnicova Kamenska, A., Jurik, M., Vestenicka, V., Kycina, M., Sagatova, E., Dvorak, M., Hlubekova, A., Kucera, C., Gernath, L., Ferenc, M., Frimmelova, P., Slebodnikova, J., Aksteinerova, N., Horny, V., Gregova, Z., Segura, T., Romero, C., Ayo, O., Masjuan Vallejo, J., Cruz, A., De felipe, A, Matute, M.C., Garcia, S., Tembl Ferrairo, J., Vielba, I., Morales Caba, L., Molina, C., Garcia-Tornel García-Camba, Á., Requena Ruiz, M., Noelia, R., Rodriguez-Yañez, M., Rodriguez Castro, E., Lopez, I., Santamaria, M., Arias, S., Purroy García, F., Vázquez Justes, D., Mauri Capdevila, G., Vicente Pascual, M., Martí Fabregas, J., Camps Renom, P., Rodríguez Campello, A., Giralt, E., Krupinski, J., Molina, J., Trillo Senin, C. Ramos Martin, S., De La Fuente Sanz, E., Moniche, F., Manuel, M.R., Pardo, B., Martínez, I., Hernández Pérez, M., Arenillas Lara, J.F., De Lera, M., Egido, J.A., Gomez Escalonilla, C., Guillan, M., Martinez, J., Lindgren, A., Andsberg, G., Wictor, L., Leonidou, M., Stenman, M., Dalberg, N., Laska, A.C., Grünfeldt, A., Lundström, A., Nadzjafov, E., Rooth, E., Dalenbring, I., Sandén, P., Johansson, E., Thomas, G., Zietz, A.V., Rudin, S., Dittrich, T.D., Lilian, K., Kägi, G., Vehoff, J., Arnold, M., Scutelnic, A., Clénin, L., Beyeler, M., Madlaine, M., Maamari, B., Siepen, B., Vynckier, J., Tarnutzer, A., Bertschi, D., Luciani, M., Cereda, C., Maulucci, F., Bianco, G., Shairin, S., Pihan, H.A., Salmen, S., Quinn, T., McAlpine, C., Wright, F., Kalladka, D., Taylor, E., Sohaa, J., Brown, Z., Dawson, J., Cameron, A., Muir, S., Dima, S., Khan, U., Zhang, L., Warburton, E., Chatterjee, K., Nallasivan, A., Curran, D., Haider, S., Ghani, U., Kenton, A., Dallol, B., Mirza, M., Menezes, B., Davies, R., Robinson, T.G., Manning, L., Sztriha, L., Phinney, T., Sethi, P., Altafullah, I., Sharaf, A., Ostrander, M., Renati, S., Burgin, W.S., Olds, K., Delio, P., Malek, A., Dissin, J., Khatri, P., Flaherty, M., Demel, S., and Dofitas, S.

Published
2024
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34. Search for the dark photon in $B^0 \to A^{\prime} A^{\prime}$, $A^{\prime} \to e^+ e^-$, $\mu^+ \mu^-$, and $\pi^+ \pi^-$ decays at Belle

Author

Park, S. -H., Kwon, Y. -J., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Behera, P., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumara, K., Lalwani, K., Lee, I. S., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mohanty, S., Mori, T., Moser, H. -G., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, C. W., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We present a search for the dark photon $A^{\prime}$ in the $B^0 \to A^{\prime} A^{\prime}$ decays, where $A^{\prime}$ subsequently decays to $e^+ e^-$, $\mu^+ \mu^-$, and $\pi^+ \pi^-$. The search is performed by analyzing $772 \times 10^6$ $B\overline{B}$ events collected by the Belle detector at the KEKB $e^+ e^-$ energy-asymmetric collider at the $\Upsilon (4S)$ resonance. No signal is found in the dark photon mass range $0.01~\mathrm{GeV}/c^2 \le m_{A^{\prime}} \le 2.62~\mathrm{GeV}/c^2$, and we set upper limits of the branching fraction of $B^0 \to A^{\prime} A^{\prime}$ at the 90\% confidence level. The products of branching fractions, $\mathcal{B}(B^0 \to A^{\prime} A^{\prime}) \times \mathcal{B}(A^{\prime} \to e^+ e^-)^2$ and $\mathcal{B}(B^0 \to A^{\prime} A^{\prime}) \times \mathcal{B}(A^{\prime} \to \mu^+ \mu^-)^2$, have limits of the order of $10^{-8}$ depending on the $A^{\prime}$ mass. Furthermore, considering $A^{\prime}$ decay rate to each pair of charged particles, the upper limits of $\mathcal{B}(B^0 \to A^{\prime} A^{\prime})$ are of the order of $10^{-8}$-$10^{-5}$. From the upper limits of $\mathcal{B}(B^0 \to A^{\prime} A^{\prime})$, we obtain the Higgs portal coupling for each assumed dark photon and dark Higgs mass. The Higgs portal couplings are of the order of $10^{-2}$-$10^{-1}$ at $m_{h'} \simeq m_{B^0} \pm 40~\mathrm{MeV}/c^2$ and $10^{-1}$-$1$ at $m_{h'} \simeq m_{B^0} \pm 3~\mathrm{GeV}/c^2$., Comment: 15 pages, 7 figures

Published
2020
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36. Measurement of time-dependent CP violation parameters in $B^0 \to K_0^SK_0^SK_0^S$ decays at Belle

Author

Belle Collaboration, Kang, K. H., Park, H., Higuchi, T., Miyabayashi, K., Sumisawa, K., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bakich, A. M., Behera, P., Beleño, C., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Doležal, Z., Dong, T. V., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, S. C., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Morii, T., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanuki, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We measure the time-dependent $C\!P$ violation parameters in $B^{0} \to K^{0}_{S}K^{0}_{S}K^{0}_{S}$ decays using $772 \times 10^6$ $B {\mkern 1.5mu\overline{\mkern-1.5mu B \mkern-0.1mu}\mkern 0.1mu}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The obtained mixing-induced and direct $C\!P$ asymmetries are $-0.71 \pm 0.23~{\rm(stat)} \pm 0.05~{\rm(syst)}$ and $0.12 \pm 0.16~{\rm(stat)} \pm 0.05~{\rm(syst)}$, respectively. These values are consistent with the Standard Model predictions. The significance of $C\!P$ violation differs from zero by 2.5 standard deviations., Comment: To be submitted to Physical Review D (RC)

Published
2020
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37. Search for transitions from $\Upsilon(4S)$ and $\Upsilon(5S)$ to $\eta_b(1S)$ and $\eta_b(2S)$ with emission of an $\omega$ meson

Author

Belle Collaboration, Oskin, P., Mizuk, R., Aihara, H., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Gudkova, K., Hadjivasiliou, C., Hara, T., Hartbrich, O., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kumara, K., Kwon, Y. -J., Lange, J. S., Lee, S. C., Lewis, P., Li, C. H., Li, L. K., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matsuda, T., Merola, M., Metzner, F., Miyabayashi, K., Miyata, H., Mohanty, G. B., Mohanty, S., Moon, T. J., Mori, T., Mussa, R., Nakao, M., Nakazawa, H., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Park, S. -H., Paul, S., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shen, C. P., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumisawa, K., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uglov, T., Unno, Y., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment
Abstract

Using data collected in the Belle experiment at the KEKB asymmetric-energy $e^+e^-$ collider we search for transitions $\Upsilon(4S) \rightarrow \eta_b(1S)\omega$, $\Upsilon(5S) \rightarrow \eta_b(1S)\omega$ and $\Upsilon(5S) \rightarrow \eta_b(2S)\omega$. No significant signals are observed and we set 90\% confidence level upper limits on the corresponding visible cross sections: $0.2 ~\textrm{pb}, 0.4 ~\textrm{pb}$ and $1.9 ~\textrm{pb}$, respectively., Comment: 7 pages, 5 figures

Published
2020

38. Search for the Decay $B_s^0 \rightarrow \eta^\prime \eta$

Author

Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Belous, K., Bennett, J., Berger, M., Bernlochner, F., Bessner, M., 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, T. E., Campajola, M., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Chen, Y. -T., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Das, S., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., 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, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Komarov, I., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Röhrken, M., Rorie, J., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., 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., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Sharma, C., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.

Subjects
High Energy Physics - Experiment
Abstract

In the Standard Model (SM) charmless hadronic decays $B_s^0 \rightarrow \eta^\prime \eta$ proceed via tree-level $b\to u$ and penguin $b\to s$ transitions. Penguin transitions are sensitive to Beyond-the-Standard-Model (BSM) physics scenarios and could affect the branching fractions and {\it CP} asymmetries in such decays. Once branching fractions for two-body decays $B_s \to \eta\eta, \eta\eta^{\prime}, \eta^{\prime}\eta^{\prime} $ are measured, and the theoretical uncertainties are reduced, it would be possible to extract {\it CP} violating parameters from the data using the formalism based on SU(3)/U(3) symmetry. To achieve this goal, at least four of these six branching fractions need to be measured. Only the branching fraction for $B_s^0 \to \eta^{\prime}\eta^{\prime}$ has been measured so far.

Published
2020

39. Study of Electromagnetic Decays of Orbitally Excited $\Xi_c$ Baryons

Author

Belle Collaboration, Yelton, J., Adachi, I., Ahn, J. K., Aihara, H., AlSaid, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., pati, S. Bahini, Behera, P., Bele, C., Bennett, J., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bracko, M., Browder, T. E., Campajola, M., Cervenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Cho, S. -J., Choi, S. - K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., DeNardo, G., DiCapua, F., Dolezal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., HernandezVillanueva, M., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kato, Y., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodys, P., Korpar, S., Kotchetkov, D., Krizan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, S . C., Lewis, P., Li, L. K., Li, Y. B., LiGioi, L., Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, T. J., Mori, T., Mrvar, M., Mussa, R., Nakano, E., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Sevior, K. Senyo M. E., Shapkin, M., Shebalin, V., Shen, C. P., Shiu, J. -G., Shwartz, B., Singh, J. B., Sokolov, A., Solovieva, E., Staric, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., VanTonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

Using 980 $fb^-1$ of data collected with the Belle detector operating at the KEKB asymmetric-energy e^+e^- collider, we report a study of the electromagnetic decays of excited {charmed baryons} $\Xi_c(2790)$ and $\Xi_c(2815)$. A clear signal (8.6 standard deviations) is observed for $\Xi_c(2815)^0 \to \Xi_c^0\gamma$, and we measure: $B[\Xi_c(2815)^0 \to \Xi_c^0\gamma]/B[\Xi_c(2815)^0 \to \Xi_c(2645)^+\pi^- \to \Xi_c^0\pi^+\pi^-] = 0.41 \pm 0.05 \pm 0.03$. We also present evidence (3.8 standard deviations) for the similar decay of the $\Xi_c(2790)^0$ and measure: $B[\Xi_c(2790)^{0}\to\Xi_c^{0}\gamma]/B[\Xi_c(2790)^0\to\Xi_c^{\prime +}\pi^{-}\to\Xi_c^{+}\gamma \pi^-] = 0.13 \pm 0.03 \pm 0.02$. The first quoted uncertainties are statistical and the second systematic. We find no hint of the analogous decays of the $\Xi_c(2815)^+$ and $\Xi_c(2790)^+$ baryons and set upper limits at the 90% confidence level of: $B[\Xi_c(2815)^{+}\to\Xi_c^{+}\gamma]/B[\Xi_c(2815)^+\to\Xi_c(2645)^0\pi^+\to\Xi_c^+\pi^-\pi^+] < 0.09,$ and $B[\Xi_c(2790)^{+}\to\Xi_c^{+}\gamma]/B[\Xi_c(2790)^+\to\Xi_c^{\prime 0}\pi^{+}\to\Xi_c^{0}\gamma \pi^+] < 0.06.$ Approximate values of the partial widths of the decays are extracted, which can be used to discriminate between models of the underlying quark structure of these excited states., Comment: Submitted to Phys. Rev. D (Rapid Communications)

Published
2020
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40. Search for a doubly-charged $DDK$ bound state in $\Upsilon(1S,2S)$ inclusive decays and via direct production in $e^+e^-$ collisions at $\sqrt{s}$ = 10.520, 10.580, and 10.867 GeV

Author

Belle Collaboration, Li, Y., Jia, S., Shen, C. P., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jin, Y., Joo, C. W., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Mori, T., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We report the results of a first search for a doubly-charged $DDK$ bound state, denoted the $R^{++}$, in $\Upsilon(1S)$ and $\Upsilon(2S)$ inclusive decays and via direct production in $e^+e^-$ collisions at $\sqrt{s}$ = 10.520, 10.580, and 10.867 GeV. The search uses data accumulated with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. No significant signals are observed in the $D^{+}D_{s}^{*+}$ invariant-mass spectra of all studied modes. The 90\% credibility level upper limits on their product branching fractions in $\Upsilon(1S)$ and $\Upsilon(2S)$ inclusive decays (${\cal B}(\Upsilon(1S,2S) \to R^{++} + anything) \times {\cal B}(R^{++} \to D^{+} D_{s}^{*+})$), and the product values of Born cross section and branching fraction in $e^+e^-$ collisions ($\sigma(e^+e^- \to R^{++} + anything) \times {\cal B}(R^{++} \to D^{+} D_{s}^{*+})$) at $\sqrt{s}$ = 10.520, 10.580, and 10.867 GeV under different assumptions of $R^{++}$ masses varying from 4.13 to 4.17 GeV/$c^2$, and widths varying from 0 to 5 MeV are obtained., Comment: 14 pages, 11 figures, accepted for publication as a Regular Article in Physical Review D

Published
2020
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41. Measurement of Branching Fractions of $\Lambda_{c}^{+} \rightarrow \eta\Lambda\pi^{+}$, $\eta \Sigma^{0} \pi^{+}$, $\Lambda(1670) \pi^{+}$, and $\eta \Sigma(1385)^{+}$

Author

Lee, J. Y., Tanida, K., Kato, Y., Kim, S. K., Yang, S. B., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Cervenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yan, W., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov., V.

Subjects
High Energy Physics - Experiment
Abstract

We report branching fraction measurements of four decay modes of the $\Lambda_{c}^{+}$ baryon, each of which includes an $\eta$ meson and a $\Lambda$ baryon in the final state, and all of which are measured relative to the $\Lambda_{c}^{+} \rightarrow p K^{-} pi^{+}$ decay mode. The results are based on a $980~\mathrm{fb^{-1}}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. Two decays, $\eta \Sigma^{0} \pi^{+}$ and $\Lambda(1670) \pi^{+}$, are observed for the first time, while the measurements of the other decay modes, $\Lambda_{c}^{+} \rightarrow \eta\Lambda\pi^{+}$ and $\eta\Sigma(1385)^{+}$, are more precise than those made previously. We obtain $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \eta \Lambda \pi^{+})/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $0.293 \pm 0.003 \pm 0.014$, $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \eta \Sigma^{0} \pi^{+})/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $0.120 \pm 0.006 \pm 0.006$, $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \Lambda(1670) \pi^{+}) \times \mathcal{B}(\Lambda(1670) \rightarrow \eta \Lambda)/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $(5.54 \pm 0.29 \pm 0.73 ) \times 10^{-2}$, and $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \eta \Sigma(1385)^{+})/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $0.192 \pm 0.006 \pm 0.016$. The mass and width of the $\Lambda(1670)$ are also precisely determined to be $1674.3 \pm 0.8 \pm 4.9~{\rm MeV}/c^{2}$ and $36.1 \pm 2.4 \pm 4.8~{\rm MeV}$, respectively, where the uncertainties are statistical and systematic, respectively., Comment: To be submitted to Physical Review D

Published
2020
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42. Analog of a quantum heat engine using a single-spin qubit

Author

Ono, K., Shevchenko, S. N., Mori, T., Moriyama, S., and Nori, Franco

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Quantum Physics
Abstract

A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theoretical description of such a two-level system as an impurity electron spin in a silicon tunnel field-effect transistor. In the incoherent regime, the system can behave analogously to either an Otto heat engine or a refrigerator. The coherent regime could be described as a superposition of those two regimes, producing specific interference fringes in the observed source-drain current., Comment: 6 pages + 17 pages of Supplemental Material

Published
2020
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43. Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle

Author

Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Belous, K., Bennett, J., Berger, M., Bernlochner, F., Bessner, M., 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, T. E., Campajola, M., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Chen, Y. -C., Chen, Y. -T., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., 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, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Komarov, I., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Lee, Y. -J., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Lin, C. -W., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Röhrken, M., Rorie, J., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., 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., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.

Subjects
High Energy Physics - Experiment
Abstract

The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon widely observed in high multiplicity proton-proton, proton-ion and deutron-ion collisions, which is not yet fully understood. In heavy-ion collisions, the hydrodynamic expansion of the Quark-Gluon Plasma is one of the possible explanations of the origin of the ridge signal. Measurements in the $e^+e^-$ collision system, without the complexities introduced by hadron structure in the initial state, can serve as a complementary probe to examine the formation of a ridge signal. The first measurement of two-particle angular correlation functions in high multiplicity $e^+e^-$ collisions at $\sqrt{s}=10.52$ GeV is reported. The hadronic $e^+e^-$ annihilation data collected by the Belle detector at KEKB are used in this study. Two-particle angular correlation functions are measured over the full azimuth and large pseudorapidity intervals which are defined by either the electron beam axis or the event thrust as a function of charged particle multiplicity. The measurement in the event thrust analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant ridge signal is observed with either coordinates analyses. Near side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and expected to provide new constraints to the phenomenological models in the low energy regime., Comment: 13 pages, 5 figures. Conference paper for ICHEP 2020

Published
2020

44. First Determination of the Spin and Parity of a Charmed-Strange Baryon, $\Xi_{c}(2970)^+$

Author

Belle Collaboration, Moon, T. J., Tanida, K., Kato, Y., Kim, S. K., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Dossett, D., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kumara, K., Kuzmin, A., Lee, I. S., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shen, C. P., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We report results from a study of the spin and parity of $\Xi_{c}(2970)^+$ using a $980~\mathrm{fb^{-1}}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The decay angle distributions in the chain $\Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} \to \Xi_c^{+}\pi^{-}\pi^{+}$ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the $\Xi_{c}(2970)^+$ spin $J =1/2$ over $3/2$ or $5/2$, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of $\Xi_{c}(2970)^+$ decay branching fractions $R={\mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} ]} / { \mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c^{\prime0}\pi^{+} ]} =1.67 \pm 0.29\mathrm{(stat.)}^{ +0.15}_{ -0.09}\mathrm{(syst.)} \pm 0.25\mathrm{(IS)}$, where the last uncertainty is due to possible isospin-symmetry-breaking effects. This $R$ value favors the spin-parity $J^P=1/2^+$ with the spin of the light-quark degrees of freedom $s_{l}=0$. This is the first determination of the spin and parity of a charmed-strange baryon., Comment: To be submitted to Physical Review Letters

Published
2020
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45. Evidence for $X(3872)\rightarrow J/\psi \pi^+\pi^-$ produced in single-tag two-photon interactions

Author

Belle Collaboration, Teramoto, Y., Uehara, S., Masuda, M., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Behera, P., Beleño, C., Bennett, J., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Hadjivasiliou, C., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kahn, J., Kaliyar, A. B., Kang, K. H., Karyan, G., Kato, Y., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, S. H., Kim, Y. -K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Lewis, P., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mohanty, G. B., Mohanty, S., Moon, T. J., Mori, T., Mrvar, M., Mussa, R., Nakano, E., Nakao, M., Nakazawa, H., Natkaniec, Z., Natochii, A., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Singh, J. B., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yabsley, B. D., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We report the first evidence for $X(3872)$ production in two-photon interactions by tagging either the electron or the position in the final state, exploring the highly virtual photon region. The search is performed in $e^+e^- \rightarrow e^+e^-J/\psi\pi^+\pi^-$, using 825 fb$^{-1}$ of data collected by the Belle detector operated at the KEKB $e^+e^-$ collider. We observe three $X(3872)$ candidates with an expected background of $0.11\pm 0.10$ events, with a significance of 3.2$\sigma$. We obtain an estimated value for $\tilde{\Gamma}_{\gamma\gamma}{\cal B}(X(3872)\rightarrow J/\psi\pi^+\pi^-$) assuming the $Q^2$ dependence predicted by a $c\bar{c}$ meson model, where $-Q^2$ is the invariant mass-squared of the virtual photon. No $X(3915)\rightarrow J/\psi\pi^+\pi^-$ candidates are found., Comment: To be published in Physical Review Letters

Published
2020
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46. Measurement of the Branching Fraction of the Decay $\boldsymbol{B^{+}\to\pi^{+}\pi^{-}\ell^{+}\nu_\ell}$ in Fully Reconstructed Events at Belle

Author

The Belle Collaboration, Beleño, C., Frey, A., Adachi, I., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Behera, P., Bennett, J., Bernlochner, F., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, P., Chen, A., Chilikin, K., Cho, K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Inami, K., Ishikawa, A., Iwasaki, M., Jacobs, W. W., Jeon, H. B., Jin, Y., Joo, K. K., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Mohanty, G. B., Moon, T. J., Mori, T., Mrvar, M., Nakao, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Patra, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Sanuki, T., Savinov, V., Schnell, G., Schwanda, C., Schwartz, A. J., Schwenker, B., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yan, W., Yang, S. B., Ye, H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment
Abstract

We present an analysis of the exclusive $B^{+}\to\pi^{+}\pi^{-}\ell^{+}\nu_{\ell}$ decay, where $\ell$ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The analysis uses the full $\Upsilon(4S)$ data sample collected by the Belle detector, corresponding to 711 fb$^{-1}$ of integrated luminosity. We select the events by fully reconstructing one $B$ meson in hadronic decay modes, subsequently determining the properties of the other $B$ meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of ${{\cal B}(B^{+}\to \pi^{+}\pi^{-}\ell^{+}\nu_{\ell})= [22.7 ^{+1.9}_{-1.6} (\mathrm{stat}) \pm 3.5(\mathrm{syst}) ]\times 10^{-5}}$, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay., Comment: 23 pages, 19 figures

Published
2020
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47. Indirect Search for Dark Matter from the Galactic Center and Halo with the Super-Kamiokande Detector

Author

Collaboration, Super-Kamiokande, Abe, K., Bronner, C., Haga, Y., Hayato, Y., Ikeda, M., Imaizumi, S., Ito, H., Iyogi, K., Kameda, J., Kataoka, Y., Kato, Y., Kishimoto, Y., Marti, Ll., Miura, M., Moriyama, S., Mochizuki, T., Nagao, Y., Nakahata, M., Nakajima, Y., Nakajima, T., Nakayama, S., Okada, T., Okamoto, K., Orii, A., Pronost, G., Sekiya, H., Shiozawa, M., Sonoda, Y., Takeda, A., Takenaka, A., Tanaka, H., Tasaka, S., Tomura, T., Ueno, K., Yano, T., Yokozawa, T., Akutsu, R., Han, S., Irvine, T., Kajita, T., Kametani, I., Lee, K. P., McLachlan, T., Okumura, K., Richard, E., Tashiro, T., Wang, R., Xia, J., Bravo-Berguño, D., Labarga, L., Fernandez, P., Blaszczyk, F. d. M., Gustafson, J., Kachulis, C., Kearns, E., Raaf, J. L., Stone, J. L., Sulak, L. R., Sussman, S., Wan, L., Wester, T., Berkman, S., Tobayama, S., Bian, J., Carminati, G., Elnimr, M., Griskevich, N. J., Kropp, W. R., Locke, S., Mine, S., Renshaw, A., Smy, M. B., Sobel, H. W., Takhistov, V., Weatherly, P., Hartfiel, B. L., Hill, J., Keig, W. E., Hong, N., Kim, J. Y., Lim, I. T., Park, R. G., Akiri, T., Bodur, B., Himmel, A., Li, Z., O'Sullivan, E., Scholberg, K., Walter, C. W., Wongjirad, T., Coffani, A., Drapier, O., Hedri, S. El, Giampaolo, A., Gonin, M., Imber, J., Mueller, Th. A., Paganini, P., Quilain, B., Ishizuka, T., Nakamura, T., Jang, J. S., Choi, K., Learned, J. G., Matsuno, S., Smith, S. N., Amey, J., Anthony, L. H. V., Litchfield, R. P., Ma, W. Y., Sztuc, A. A., Uchida, Y., Wascko, M. O., Berardi, V., Catanesi, M. G., Intonti, R. A., Radicioni, E., Calabria, N. F., Machado, L. N., De Rosa, G., Collazuol, G., Iacob, F., Lamoureux, M., Ospina, N., Ludovici, L., Boschi, T., Di Lodovico, F., Sedgwick, S. Molina, Zsoldos, S., Nishimura, Y., Cao, S., Friend, M., Hasegawa, T., Ishida, T., Ishii, T., Kobayashi, T., Nakadaira, T., Nakamura, K., Oyama, Y., Sakashita, K., Sekiguchi, T., Tsukamoto, T., Abe, KE., Hasegawa, M., Isobe, Y., Miyabe, H., Nakano, Y., Shiozawa, T., Sugimoto, T., Suzuki, A. T., Takeuchi, Y., Yamamoto, S., Ali, A., Ashida, Y., Hayashino, T., Hiraki, T., Hirota, S., Huang, K., Ieki, K., Jiang, M., Kikawa, T., Mori, M., Murakami, A., Nakamura, KE., Nakaya, T., Patel, N. D., Suzuki, K., Takahashi, S., Tateishi, K., Wendell, R. A., McCauley, N., Mehta, P., Pritchard, A., Tsui, K. M., Fukuda, Y., Itow, Y., Menjo, H., Mitsuka, G., Murase, M., Muto, F., Niwa, T., Sato, K., Suzuki, T., Taani, M., Tsukada, z M., Mijakowski, P., Frankiewicz, K., Hignight, J., Jung, C. K., Li, X., Palomino, J. L., Santucci, G., Vilela, C., Wilking, M. J., Yanagisawa, C., Fukuda, D., Hagiwara, K., Harada, M., Horai, T., Ishino, H., Ito, S., Kayano, T., Kibayashi, A., Koshio, Y., Ma, W., Mori, T., Nagata, H., Piplani, N., Sakuda, M., Seiya, S., Takahira, Y., Xu, C., Yamaguchi, R., Kuno, Y., Barr, G., Barrow, D., Cook, L., Simpson, C., Wark, D., Nova, F., Tacik, R., Yang, J. Y., Cole, A., Jenkins, S. J., McElwee, J., Thiesse, M., Thompson, L., Okazawa, H., Kim, S. B., Choi, Y., Ito, K., Nishijima, K., Iwamoto, K., Koshiba, M., Suda, Y., Yokoyama, M., Calland, R. G., Goldsack, A., Martens, K., Murdoch, M., Suzuki, Y., Vagins, M. R., Hamabe, D., Kuze, M., Okajima, Y., Tanaka, M., Yoshida, T., Inomoto, M., Ishitsuka, M., Matsumoto, R., Ohta, K., Shinoki, M., Martin, J. F., Nantais, C. M., Tanaka, H. A., Towstego, T., Hartz, M., Konaka, A., de Perio, P., Prouse, N. W., Chen, S., Xu, B. D., Zhang, Y., Richards, B., Connolly, K., Wilkes, R. J., Jamieson, B., Walker, J., Giorgio, P., Minamino, A., and Pintaudi, G.

Subjects
High Energy Physics - Experiment
Abstract

We present a search for an excess of neutrino interactions due to dark matter in the form of Weakly Interacting Massive Particles (WIMPs) annihilating in the galactic center or halo based on the data set of Super-Kamiokande-I, -II, -III and -IV taken from 1996 to 2016. We model the neutrino flux, energy, and flavor distributions assuming WIMP self-annihilation is dominant to $\nu \overline{\nu}$, $\mu^+\mu^-$, $b\overline{b}$, or $W^+W^-$. The excess is in comparison to atmospheric neutrino interactions which are modeled in detail and fit to data. Limits on the self-annihilation cross section $\langle \sigma_{A} V \rangle$ are derived for WIMP masses in the range 1 GeV to 10 TeV, reaching as low as $9.6 \times10^{-23}$ cm$^3$ s$^{-1}$ for 5 GeV WIMPs in $b\bar b$ mode and $1.2 \times10^{-24}$ cm$^3$ s$^{-1}$ for 1 GeV WIMPs in $\nu \bar \nu$ mode. The obtained sensitivity of the Super-Kamiokande detector to WIMP masses below several tens of GeV is the best among similar indirect searches to date., Comment: 13 pages, 12 figures, Submitted to Phys. Rev. D

Published
2020
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48. Search for $B^0$ Decays to Invisible Final States ($+\gamma$) at Belle

Author

Belle Collaboration, Ku, Y., Chang, P., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Behera, P., {n}o, C. Bele\, Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Chang, M. -C., Chekelian, V., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Grzymkowska, O., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Villanueva, M. Hernandez, Higuchi, T., Hou, W. -S., Hsu, C. -L., Huang, K., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jia, S., Jin, Y., Kang, K. H., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kwon, Y. -J., Lai, Y. -T., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., MacQueen, C., Matvienko, D., Merola, M., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Park, H., Park, S. -H., Patra, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Senyo, K., Shapkin, M., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Varner, G., Varvell, K. E., Vinokurova, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yang, S. B., Ye, H., Yuan, C. Z., Zhang, Z. P., and Zhukova, V.

Subjects
High Energy Physics - Experiment
Abstract

We report searches for $B^0\to\rm{invisible}$ and $B^0\to\rm{invisible}+\gamma$ decays, where the energy of the photon is required to be larger than 0.5 GeV. These results are obtained from a $711\,{\rm fb}^{-1}$ data sample that contains $772 \times 10^6 B\bar{B}$ pairs and was collected near the $\Upsilon\,(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. We observe no significant signal for either decay and set upper limits on their branching fractions at $90\%$ confidence level of $\mathcal{B}\,(B^0\to\rm{invisible}) < 7.8\times10^{-5}$ and $\mathcal{B}\,(B^0\to\rm{invisible}+\gamma) < 1.6\times10^{-5}$., Comment: submitted to Physical Review D

Published
2020
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49. Evidence for a vector charmonium-like state in $e^+e^- \to D^+_sD^*_{s2}(2573)^-+c.c.$

Author

Belle Collaboration, Jia, S., Shen, C. P., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Ayad, R., Badhrees, I., Behera, P., Belous, K., Bennett, J., Besson, D., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Dash, N., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jeon, H. B., Jin, Y., Joo, K. K., Karyan, G., Kawasaki, T., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Mizuk, R., Moon, T. J., Mori, T., Mrvar, M., Nakao, M., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yan, W., Yang, S. B., Ye, H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We report the measurement of $e^+e^- \to D^+_sD^*_{s2}(2573)^-+c.c.$ via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb$^{-1}$ collected with the Belle detector at the $\Upsilon(4S)$ and nearby. We find evidence for an enhancement with a 3.4$\sigma$ significance in the invariant mass of $D^+_sD^*_{s2}(2573)^- +c.c.$ The measured mass and width are $(4619.8^{+8.9}_{-8.0}({\rm stat.})\pm2.3({\rm syst.}))~{\rm MeV}/c^{2}$ and $(47.0^{+31.3}_{-14.8}({\rm stat.})\pm4.6({\rm syst.}))~{\rm MeV}$, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmonium-like state at 4626 MeV/$c^2$ recently reported by Belle in $e^+e^-\to D^+_sD_{s1}(2536)^-+c.c.$ The product of the $e^+e^-\to D^+_sD^*_{s2}(2573)^-+c.c.$ cross section and the branching fraction of $D^*_{s2}(2573)^-\to{\bar D}^0K^-$ is measured from $D^+_sD^*_{s2}(2573)^-$ threshold to 5.6 GeV., Comment: 9 pages, 4 figures

Published
2020
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50. First search for the $\eta_{c2}(1D)$ in $B$ decays at Belle

Author

Belle Collaboration, Chilikin, K., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Belous, K., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chekelian, V., Chen, A., Cheon, B. G., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hartbrich, O., Hayasaka, K., Hayashii, H., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Karyan, G., Kato, Y., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Shapkin, M., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Won, E., Xu, X., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Zhang, J., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

The first dedicated search for the $\eta_{c2}(1D)$ is carried out using the decays $B^+ \rightarrow \eta_{c2}(1D) K^+$, $B^0 \rightarrow \eta_{c2}(1D) K^0_S$, $B^0 \rightarrow \eta_{c2}(1D) \pi^- K^+$, and $B^+ \rightarrow \eta_{c2}(1D) \pi^+ K^0_S$ with $\eta_{c2}(1D) \to h_c \gamma$. No significant signal is found. For the $\eta_{c2}(1D)$ mass range between $3795$ and $3845\ \mathrm{MeV}/c^2$, the branching-fraction upper limits are determined to be $\mathcal{B}(B^+ \rightarrow \eta_{c2}(1D) K^+) \times \mathcal{B}(\eta_{c2}(1D) \to h_c \gamma) < 3.7 \times 10^{-5}$, $\mathcal{B}(B^0 \rightarrow \eta_{c2}(1D) K^0_S) \times \mathcal{B}(\eta_{c2}(1D) \to h_c \gamma) < 3.5 \times 10^{-5}$, $\mathcal{B}(B^0 \rightarrow \eta_{c2}(1D) \pi^- K^+) \times \mathcal{B}(\eta_{c2}(1D) \to h_c \gamma) < 1.0 \times 10^{-4}$, and $\mathcal{B}(B^+ \rightarrow \eta_{c2}(1D) \pi^+ K^0_S) \times \mathcal{B}(\eta_{c2}(1D) \to h_c \gamma) < 1.1 \times 10^{-4}$ at 90% C. L. The analysis is based on the 711 $\mathrm{fb}^{-1}$ data sample collected on the $\Upsilon(4S)$ resonance by the Belle detector, which operated at the KEKB asymmetric-energy $e^+ e^-$ collider., Comment: 23 pages, 8 figures

Published
2020
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